Resources »  News

CIESIN is pleased to announce the arrival of Dr. Dana Thomson, a prominent public health and spatial data expert who has worked at the intersection of demography, public health, and geography for two decades. Dr. Thomson’s work is characterized by open data, user-centered design, equitable partnerships that address historical inequities, and co-design of meaningful information. She will manage the CIESIN Science Applications division, which advances interdisciplinary research and applications on human-environment interactions, bringing to bear state-of-the-art scientific data and knowledge on pressing sustainable development challenges.

Dr. Thomson helped to establish the Integrated Deprived Area Mapping System (IDEAMAPS) Network which brings together experts from traditionally-siloed “slum” mapping communities including community members, government officials, humanitarians, and data scientists. Several projects within the IDEAMAPS Network are building the infrastructure and processes necessary for “slum” residents and local experts to access the data they need in appropriate formats and validate modelled outputs (maps) in areas they are familiar with, and for modelers to access a validation data layer to improve future iterations of models.

Dana is also a pioneer in the field of gridded population sampling, developing innovative tools and sampling approaches to more accurately measure populations in data-scarce settings, especially vulnerable and mobile populations who are poorly captured by traditional data collection methods. She developed GridSample.org and other tools that help survey experts without Geographic Information System (GIS) skills to create sample frames from gridded population data, and recently published the go-to manual on Designing and Implementing Gridded Population Surveys.

Dana holds a BA in Geography from the George Washington University, an MSc in Global Public Health from the Harvard School of Public Health, and an MSc and PhD in Social Statistics from the University of Southampton (UK). Her research has evaluated the accuracy of gridded population estimates and feasibility of their use for fieldwork in lower- and middle-income countries, and includes several large-scale evaluations of health systems in Africa, Asia, and the Caribbean using geospatial and household survey data. She has also taught practitioners and applied researchers at Harvard University, the University of Rwanda, and the University of Southampton, and worked with AmeriCorps, the Brookings Institution, Johns Snow Inc., the Measure DHS Project, and the World Bank. She has published 48 peer-reviewed articles in journals such as Land Use Policy, PLoS One, Urban Science and the International Journal of Health Geography.

An easy-to-use mapping tool increases flood planning capacity in New York State, especially for historically underrepresented communities, and can enhance planning for sea level rise. Developed by the NASA Socioeconomic Data and Applications Center (SEDAC) at Columbia Climate School’s CIESIN, the New York State Flood Impact Support System Application (NYS FIDSS) visualizes building footprint data for nearly all New York State’s infrastructure, except New York City. It is highly interactive and accessible, requiring only Internet access, ensuring that communities with fewer resources can create comprehensive flood scenarios for planning, response, and policymaking.

The easy interface of the NYS FIDSS mapper aligns with the aims of the new NASA Open Science initiative to more openly share software, data, and knowledge to advance inclusiveness and improve social justice. The Mapper includes a data set, U.S. Social Vulnerability Index Grids, developed by the NASA SEDAC and based on the Centers for Disease Control’s Social Vulnerability Index, which lets users visualize relative “social vulnerability” for areas impacted by flooding. The index displays fine-grained information on social conditions of the population in a particular area, including economic level, who is in the household, minority status, dwelling places, the ability to understand English, and access to transport. This information can be critical to targeting flood planning resources and aid to the areas that most need it—before, during, or after a flood event.

The NYS FIDSS mapper is based on results from the project New York State Building Footprints with Flood Analysis, which provides infrastructure data for all New York State counties excluding New York City. It also includes data on areas bordering the lower Hudson River Valley and Westchester's Long Island Sound shoreline, from the Hudson River Flood Impact Decision Support System, a flood assessment mapping tool developed by CIESIN under support from NYSERDA. The mapper also provides infrastructure, flooding, and socioeconomic data layers at the local level from the Consortium for Climate Risk in the Urban Northeast (CCRUN), whose members from academia, including CIESIN, conducted stakeholder-driven research to reduce climate vulnerability in the urban northeastern United States, supported by NOAA.

The lead developers are CIESIN senior research staff assistant Juan Martinez and senior systems analyst/GIS developer Kytt MacManus. 

The NASA Socioeconomic Data and Applications Center (SEDAC) held its annual User Working Group (UWG) meeting May 30‒31 at the Manhattanville campus of Columbia University. UWG chair William Easterling and five other members attended in person, and other members participated remotely. Additional participants included Nancy Searby, program manager for the NASA Earth Science Applied Sciences Capacity Building Program; Cerese Albers and Joel Scott from NASA Headquarters; NASA Distributed Active Archive Centers (DAACs) engineers Frank Lindsay, Sandra Blevins, Sara Lubkin, and Nathan James; Tammy Walker of the Oak Ridge National Laboratory DAAC; and Wade Albright of the Alaska SAR Facility (ASF). The UWG reviewed the final draft of the updated SEDAC Strategic Plan, reviewed new impact metrics developed by SEDAC, and approved a range of new data sets, pending receipt of final comments. The meeting included a panel discussion of NASA’s efforts related to environmental and climate justice, moderated by SEDAC manager Robert Chen with panelists Albers, Easterling, Searby, and UWG member Catherine Nakalembe. SEDAC deputy manager Alex de Sherbinin, systems engineer Sri Vinay, project scientist Susana Adamo, systems programmer Kytt MacManus, and other SEDAC staff presented and participated in the meeting. 

African Shifts: Addressing Climate-Forced Migration

A new report from the Africa Climate Mobility Initiative (ACMI), African Shifts: Addressing Climate-Forced Migration depicts African people’s experience of climate vulnerability and presents possible scenarios for movements due to climate impacts on the continent between now and 2050. Finally, it presents eight key recommendations to be implemented between now and 2030 that focus on constructive, adaptive responses to climate mobility, in alignment with the 2030 Sustainable Development Goals and the Paris Agreement.

CIESIN contributed to the report by producing spatially explicit projections of both internal and international mobility that may occur from climate impacts, within and among African countries, up to the year 2050. This modelling builds on the innovative approaches of the World Bank’s Groundswell series of reports, for which CIESIN worked with City University of New York and the Potsdam Institute for Climate Impact Research on the modeling. The modeling work was complemented with findings from field research conducted by the Mixed Migration Centre.  

The ACMI is a joint undertaking between the African Union Commission, the United Nations Development Programme (UNDP), the UN Framework Convention on Climate Change (UNFCCC), the International Organization for Migration (IOM), and the World Bank. The CIESIN team was led by Alex de Sherbinin, deputy director and senior research scientist, and included Fabien Cottier, postdoctoral research scientist; Susana Adamo, research scientist; Briar Mills, former geographic information specialist; Greg Yetman, associate director for Geospatial Applications; Tricia Chai-Onn, senior geographic information specialist; and John Squires, geographic information specialist.

CIESIN-Columbia University

Several new data products have been released under CIESIN’s NASA-funded Socioeconomic Data and Applications Center (SEDAC). Foremost among them, the Global Gridded Relative Deprivation Index (GRDI) measures relative poverty and deprivation using subnational data on human development, infant mortality, and child dependency, as well as satellite-derived data on built-up areas, nighttime lights, and change in nighttime lights. It is the first product of its kind that covers the entire world at a 1 kilometer spatial resolution. Other new data sets from the NASA SEDAC include:

—Daily and Annual Air Quality Data Sets for the Contiguous U.S. support research in environmental epidemiology, environmental justice, and health equity by linking with ZIP Code-level demographic and medical data sets.

—Country Trends in Major Air Pollutants, a framework of public-health-focused air quality indicators that measures more than 200 countries' trends in exposure to particulate matter (PM2.5), ozone (O3), nitrogen oxides (NOx), sulfur dioxide (SO2), carbon monoxide (CO), and volatile organic compounds (VOCs). Developed by an interdisciplinary team from Yale University with NASA SEDAC.

—Urban and Land Backscatter Time Series. Based on satellite microwave backscatter, the data set traces trends in urban settlements from 1993 to 2020. Developed by a team led by Steve Frolking, University of New Hampshire.

—Twentieth Century Crop Statistics, a crop yield data set spanning the period 1900‒2017 provides national and subnational data on production, yield, and harvested area of maize and wheat for many of the world’s major bread baskets. Developed by W. Anderson and others.

—Water Security Monthly Grids. Monthly surpluses and deficits of freshwater, computed on a 0.25 degree grid for 1948‒2014. Developed with ISciences.

A Webinar hosted by NASA Earthdata on November 30 featured CIESIN deputy director Alex de Sherbinin and research scientist Susana Adamo presenting air quality data sets distributed by the NASA Socioeconomic Data and Applications Center (SEDAC). The Webinar covered global gridded and tabular country and city trend data for particulate matter and other pollutants, and grids focusing on the United States for particulate matter, ozone, and nitrogen-dioxide. The Webinar also demonstrated the use of these data products with a variety of SEDAC data sets—Gridded Population of the World (GPWv4), Social Vulnerability Grids, and the recently released Global Relative Deprivation Index—to study health impacts and environmental justice.

Users of the NASA Socioeconomic Data and Applications Center (SEDAC) are invited to participate in the American Customer Satisfaction Index (ACSI) survey for the NASA Earth Observing System Data and Information System (EOSDIS). This annual survey assesses user satisfaction with the data, tools, and support provided by EOSDIS data centers and services. SEDAC, which serves a wide range of basic and applied users interested in the integration of remote sensing and socioeconomic data, is one of the data centers evaluated by the survey. Survey results enable SEDAC to address problems, improve data and services, and identify high priority user needs and concerns. It also helps justify NASA′s continuing investment in EOSDIS data services and support. 

All SEDAC users are encouraged to participate in the survey. Users with an Earthdata user name registered with SEDAC will receive an e-mail invitation from the CFI Group on behalf of NASA, requesting participation in the brief survey (approximately 15 minutes to complete). The identity of respondents is not shared with SEDAC or NASA.

The majority of countries worldwide will fall short of the net-zero goal to reduce greenhouse gas (GHG) emissions by 2050, according to the 2022 Environmental Performance Index (EPI) produced by researchers at the Yale Center for Environmental Law & Policy (YCELP) and CIESIN. The EPI uses emissions data from the past 10 years as a basis for projecting mid-century levels for 180 countries. For the first time India’s EPI score was the lowest among all countries, reflecting its drastically poor air quality and quickly rising GHG emissions. Intensifying air pollution and increasing GHG emissions also placed China towards the bottom of the 2022 scorecard, at 160. Among rich countries, the US was ranked low at 43; although it has reduced its emissions, its starting rate is so high that it is unlikely to make the 2050 target. Countries beset by conflict or other crises such as Myanmar and Haiti or nations that favored economic growth over environmental concerns—for example, Vietnam, Bangladesh, and Pakistan—also received low rankings.

Denmark was again rated the most sustainable nation, with the United Kingdom and Finland close behind owing to success in cutting GHG emissions. Sweden and Switzerland were among high-scoring countries for air and water quality. Offering insights into the drivers of good environmental performance, CIESIN senior research scientist Alex de Sherbinin, one of the lead authors of the 2022 EPI, explained, “Good governance, policy commitment, and targeted environmental investments separate the nations that are moving toward a sustainable future from those that are not. High-scoring countries have well-thought-through programs to protect public health, conserve natural resources, and mitigate greenhouse gas emissions.”

The 2022 EPI used 40 performance indicators to rank 180 countries on their proximity to international targets for addressing air and water pollution, waste management, and biodiversity and habitat protection, as well as the transition to a clean energy future. Even with continuing lags in GHG emissions reduction worldwide, over the past decade significant progress has been made on critical environmental health issues like sanitation, drinking water, and indoor air pollution. YCELP and CIESIN have collaborated in producing the EPI biennially since 2006.

Adapted from a press release by the Yale Center for Environmental Law & Policy.

Source: Understanding Flood Vulnerability: A Case Study of Harris County (StoryMap)

Climate change disproportionately affects the poor and socially vulnerable. The scientific community is responding in its commitment to data and services development that can advance environmental justice. A recent NASA Earthdata Backgrounder profiles some of the work the NASA Socioeconomic Data and Application Center (SEDAC) is doing in this area.

The backgrounder describes a research project focused on the low-wealth, predominately Black community of the Hampton Roads region of Norfolk, VA, which is experiencing rising sea level rise in part because the land area is sinking. SEDAC population data was paired with satellite data to reveal high population density combined with anomalously high sea surface height in this area, identifying high vulnerability. Integrating different types of data in this way lets planners and policymakers make better-informed mitigation decisions that take into consideration social as well as physical impacts of sea-level rise, better insuring environmental justice for vulnerable communities.

In a second example, in collaboration with the International Research Institute for Climate and Society (IRI), SEDAC helped develop an index that assesses flood vulnerability for Harris County, Texas. Taking a multidisciplinary approach to capturing resilience and susceptibility to flooding, 15 indicators were combined into an aggregate index. The tool can visualize flood vulnerability at the block group level for Harris County and analyze relative flood vulnerability across the region, improving prioritization of flood remediation policies and aid.

CIESIN director Robert Chen, with associate director for Science Applications Alex de Sherbinin and research scientist Susana Adamo, helped organize and co-lead a NASA Equity and Environmental Justice virtual workshop, in their respective SEDAC roles as manager, deputy manager, and project scientist. The workshop report was released in December 2021.

SEDAC manager Robert Chen, with deputy manager Alex de Sherbinin and project scientist Susana Adamo, helped organize and co-lead the NASA Equity and Environmental Justice virtual workshop held October 20, 2021. NASA Earth Science Division (ESD) director Karen St. Germain opened the event, which brought together 15 invited experts, including SEDAC User Working Group (UWG) chair Barbara Ryan and several other UWG members, ESD staff, and representatives from social science research organizations who engage with environmental justice (EJ) research and communities. Chen, de Sherbinin, and Adamo co-led several breakout groups, working closely with SEDAC program scientist Nancy Searby and other NASA staff. The workshop report is now available.

In early 2021, a Biden administration executive order on equity directed all federal agencies to incorporate achieving environmental justice in their missions. In June 2021, NASA launched Mission Equity, a comprehensive effort to assess expansion and modification of agency programs, procurements, grants, and policies, and examine potential barriers and challenges for historically underrepresented and underserved communities.

Tuholske et al., PNAS, 2021 Annual municipality-level increases in the rate of urban population exposure to extreme heat, 1983–2016.

Rising air temperatures associated with climate change are a threat to cities throughout the world, but especially to the urban poor. The poor generally have fewer adaptive resources and less protective shelter; they have greater health vulnerability to extreme heat, and lower ability to evacuate. These conditions can be exacerbated by the urban heat island effect, where closely spaced structures with lots of pavement and limited green space, common to poorer neighborhoods worldwide, retain heat more readily and for a longer duration. Better understanding of patterns of local exposure to extreme heat is critically needed to design adaptive measures and improve health outcomes. However, until now, global, fine-resolution data on the intersection of extreme heat and population distribution in urban settings have been limited.

A new study published in the prestigious journal, Proceedings of the National Academy of Sciences (PNAS), “Global Urban Population Exposure to Extreme Heat,” is the first to combine temperature, relative humidity, and population data to provide a more detailed and comprehensive view of how extreme heat exposure is likely to impact many more people in cities around the world in the coming decades. Lead author is Earth Institute Fellow Cascade Tuholske, based at CIESIN, with co-authors Kelly Caylor, Chris Funk, Andrew Verdin, Stuart Sweeney, Kathryn Grace, Pete Peterson, and Tom Evans. The team used new, fine-resolution temperature, relative humidity, and population data to assess urban extreme heat exposure in more than thirteen thousand cities, from 1983 to 2016. Using a daily maximum wet bulb globe temperature threshold of 30°C (86°F)—which accounts for a combined impact of both temperature and humidity on human health and wellbeing—global exposure was seen to increase nearly 200% from 1983 to 2016. Total urban warming elevated the annual increase in exposure by approximately 50% compared to urban population growth alone. Exposure increased for nearly half of urban settlements worldwide, which in 2016 comprised 1.7 billion people.

The authors also found that how total urban warming and population growth drove the trajectory of exposures was not evenly distributed, thus reinforcing the importance of crafting adaptation measures that address local needs. Their findings further suggest that previous research has underestimated extreme heat exposure, underscoring the necessity for improved data to support the development of targeted adaptions such as early warning systems to reduce harmful effects, especially on the urban poor. Visualize the Data/Associated Press  

Users of the NASA Socioeconomic Data and Applications Center (SEDAC) are invited to participate in the American Customer Satisfaction Index (ACSI) survey for the NASA Earth Observing System Data and Information System (EOSDIS). This annual survey assesses user satisfaction with the data, tools, and support provided by EOSDIS data centers and services. SEDAC, which serves a wide range of basic and applied users interested in the integration of remote sensing and socioeconomic data, is one of the data centers evaluated by the survey. Survey results enable SEDAC to address problems, improve data and services, and identify high priority user needs and concerns. It also helps justify NASA′s continuing investment in EOSDIS data services and support. 

All SEDAC users are encouraged to participate in the survey by October 1. Users with an Earthdata user name registered with SEDAC will receive an e-mail invitation from the CFI Group on behalf of NASA, requesting participation in the brief survey (10–15 minutes to complete). The identity of respondents is not shared with SEDAC or NASA.

This summer has seen a spate of extreme climate-related events, from record high temperatures to forest fires, floods, and severe storms. Climate and other natural and manmade hazards do not affect all populations equally. Some sub-populations are particularly vulnerable to their effects owing to factors such as low income, lower levels of education, poor housing, or historical inequalities. Parsing out the fine-grained layers of social conditions across the strata of society—how much money people make, who makes up their households, minority status, ability to understand English, dwelling places, and access to transport—can provide the fundamental elements needed to quantify social vulnerability to hazards in the United States. The Centers for Disease Control (CDC) Social Vulnerability Index (SVI), created by the Geospatial Research, Analysis, and Services Program (GRASP) of the Centers for Disease Control and Prevention (CDC) and the Agency for Toxic Substances and Disease Registry (ATSDR), has long been a key resource for local officials to identify communities that may need support before, during, or after hazardous events or disease outbreaks.

To increase the utility of the SVI data set, the NASA Socioeconomic Data and Applications Center (SEDAC) operated by CIESIN gridded the input data and removed uninhabited areas. The resulting data set, the U.S. Social Vulnerability Index (SVI) Grids, enables calculation of the SVI for user-defined areas, facilitating integration with hazard and other geospatial data. The gridded SVI data set uses the same four themes as the CDC/ATSDR index—Socioeconomic, Household Composition and Disability, Minority Status and Language, and Housing Type and Transportation—to rank communities on vulnerability for the entire United States. The SVI data set is based on inputs at the census-tract level for 15 variables for the years 2000, 2010, 2014, 2016, and 2018, and aligns with the Gridded Population of the World (GPW) data set, SEDAC′s flagship data collection.

A map gallery includes an overall SVI map and four maps visualizing each of the themes. Development of the gridded data set and maps was led by Carolynne Hultquist, post-doctoral research scientist at CIESIN.

For the AmeriGEO Week2021 held virtually August 23‒27, Cascade Tuholske, Earth Institute postdoctoral research scientist, gave a pre-recorded presentation, “Urban Extreme Heat Exposure Trajectories in AmeriGEO Countries.” Staff from CIESIN, the International Research Institute (IRI), and Lehman College, and graduate students from Lehman, presented and authored four poster papers. The students are interns working with postdoctoral research scientist Carolynne Hultquist, supported by the NASA Socioeconomic Data and Applications Center (SEDAC) operated by the Center.

For the 2nd Knowledge Discovery and Data Mining (KDD) Workshop on Data-driven Humanitarian Mapping held virtually August 15, Lehman College student Lauren Carey gave a pre-recorded presentation on extracting street-level flood vulnerability data from Google Street View, based on a workshop paper co-authored with fellow students Raychell Velez, Christopher Aime, and Diana Calderon, together with staff from CIESIN, IRI, and Lehman College.

Photo Credit: Anne-Laure White, GRID3

As face-to-face educational activities have been curtailed or even suspended due to the pandemic, CIESIN continues to be active on diverse educational fronts, in online and hybrid venues ranging from academic settings to video series to workshops and Webinars, in addition to ongoing development of online training and curriculum resources. CIESIN staff regularly teach popular courses at graduate and undergraduate level, in a variety of departments, programs, and schools across Columbia University, including Columbia and Barnard Colleges, the Ecology, Evolution, and Environmental Biology (E3B) Department, the Mailman School of Public Health, the School of International and Public Affairs (SIPA), and the School of Professional Studies (SPS).

For the past Fall-Winter term, some CIESIN staff taught classes in “hyflex” mode (designated campus classroom, with online participation by students and faculty as needed)—for example, “Environmental Sustainability Indicators,” by associate director of Science Applications, Alex de Sherbinin, and “Data Analysis & Visualization in Sustainability,” by associate director for Geospatial Applications Greg Yetman. Both classes are in the Sustainability Management Program of the SPS. Supporting Yetman was postdoctoral research scientist Carolynne Hultquist, who taught the same class in the fall. Also this past semester, in online mode, GIS developer Kytt MacManus taught “Spatial Analysis for Sustainable Development,” and senior geographic information specialist Linda Pistolesi taught “GIS for Sustainable Development,” both for Columbia College. For E3B, research scientist Susana Adamo was instructor for “Human Populations and Sustainable Development.”  

CIESIN is also part of a major new initiative of the new Columbia Climate School. Led by Alex de Sherbinin and Kamal Amakrane, a United Nations diplomat and adjunct professor at SIPA, the Climate Mobility Network is one of nine new “Earth Networks” to facilitate interdisciplinary collaboration across Columbia University in the themes of climate, sustainability and the future of the planet. During its initial three-year phase, the Climate Mobility Network plans to develop a trans-disciplinary course, teaching aids, and tools to help build curriculum and pedagogy on climate mobility. The Network will also work on policy research and modeling in support of operational agencies, building on ongoing work with the World Bank, United Nations Development Programme, the Platform for Disaster Displacement, UNHCR-The UN Refugee Agency, and the International Organization of Migration, as well as the Columbia Global Centers Committee on Forced Migration.

Online educational activities included an educational Webinar series for a non-technical audience, with modules to date on population modelling, mapping settlements, and mapping subnational boundaries, produced by the Georeferenced Infrastructure and Data for Development (GRID3) program. In a separate effort, several online training modules in English and Spanish were co-developed by Susana Adamo, with Professor Landy Sanchez of the Center for Demographic, Urban, and Environmental Studies at El Colegio de Mexico (COLMEX), released by the Population-Environment Research Network (PERN) and supported by the International Union for the Scientific Study of Population (IUSSP) through a grant from the William and Flora Hewlett Foundation. Focused on the fundamentals of spatial data integration and geared towards demographers and other population researchers, the video-based tutorials draw on pre-packaged data and open source geographic information system (GIS) and Web-based tools. This past year, CIESIN senior geographic information specialist Dara Mendeloff participated in Earth Institute Live (EI Live), an online series for K–12 students and educators. Coordinated by the Education and Outreach Office of the Lamont Doherty Earth Observatory (LDEO), live video lessons were led by experts in a broad variety of scientific disciplines across the EI. In one session, Mendeloff gave an introduction to geographic information systems (GIS); in another, she highlighted select data science tools used in climate research. She also took part in a professional development event for K–12 educators, sponsored by the EI, which focused on teaching climate change in the classroom.

CIESIN scientists remain active in a number of different scientific communities, despite travel restrictions due to the COVID-19 pandemic. On April 27, at the virtual meeting of the European Geophysical Union, Martin Juckes, co-manager of the Intergovernmental Panel on Climate Change (IPCC) Data Distribution Center (DDC), presented a lightning presentation and poster paper, “IPCC Data Distribution Centre: FAIR Data from Climate Research to Mitigation Policy.” Robert Chen and information scientist Xiaoshi Xing were co-authors. CIESIN is one of four organizations that jointly operate DDC; the other three are based in the UK, Germany, and Spain. The IPCC DDC provides access to key data sets used in IPCC assessments and reports. Also participating was Robert Downs, CIESIN senior digital archivist, who co-authored the presentation, “Towards Developing Community Guidelines for Sharing and Reusing Quality Information of Earth Science Datasets,” given by Carlo Lacagnina, Barcelona Supercomputing Centre.

Senior digital archivist Robert Downs participated virtually in the Research Data Alliance (RDA) 17th Plenary Meeting (RDA P17) April 20–23 and the 16th International Digital Curation Conference (IDCC21) on April 19, both coordinated from Edinburgh, Scotland. During RDA P17, Downs presented the poster, “Peer Review of Open Research Data: The Approach of a Scientific Data Center.” He also chaired the joint session, “Collaborating to Improve Platforms and Share Resources among Open Data Repositories,” where he presented, “Improving Repositories through Collaboration.”  At the IDCC21, Downs gave the presentation, “Documentation to Foster Sharing and Use of Open Earth Science Data: Quality Information,” co-authored with Ge Peng of NASA’s Marshall Space Flight Center, David Moroni of NASA’s Jet Propulsion Laboratory, Hampapuram Ramapriyan of Science Systems and Applications, Inc., and Yaxing Wei of Oak Ridge National Laboratory. 

As part of the International Research Institute for Climate and Society (IRI) seminar on April 20, CIESIN postdoctoral research scientist Carolynne Hultquist gave the presentation, “Bringing Vulnerable Populations into the Flood Risk Equation.” Two graduate student interns also participated: Raychell Velez, who is working toward her MS in geographic information systems (GIS) at Lehman College of the City University of New York; and Colleen Neely, an MPA student in environmental science and policy at Columbia’s School of International and Public Affairs (SIPA). Hultquist gave an overview of relevant data and services from the NASA Socioeconomic Data and Applications Center (SEDAC) and described ongoing efforts to improve vulnerability data for flood risk assessment. Velez presented work supported by SEDAC to develop high resolution data on building exposure to floods using artificial intelligence (AI) approaches. Neely, an Earth Institute intern with Hultquist and IRI scientist Andrew Kruczkiewicz, discussed work on a high resolution flood vulnerability index for Houston, Texas, designed to support more equitable flood mitigation efforts.

CIESIN associate director for Science Applications Alex de Sherbinin teamed up with Prof. Andrew Tatem of the University of Southampton in the virtual event, “Using Big Data to Study Migration Patterns,” organized by the Columbia Population Research Center (CPRC) and Columbia’s Data Science Institute (DSI) on April 22. The two researchers discussed the use of novel data streams such as cellphone and device location data to understand mobility patterns. Following the presentation, which drew more than 50 participants, a reception was held for CPRC and DSI affiliates to discuss research collaboration opportunities. Among other activities, de Sherbinin is co-lead of the Climate Mobility Network, a new “Earth Network” established by the Earth Institute. Tatem is the director of WorldPop and a director of Flowminder, and a key collaborator in the GeoReferenced Infrastructure and Demographic Data for Development (GRID3) program managed by CIESIN.

CIESIN through its NASA Socioeconomic Data and Applications Center (SEDAC) has released two new data sets, one characterizing historical air quality over the period 1998–2016, and the second projecting urban land extent into the future through 2100 under different shared Socioeconomic Pathways (SSPs). The first data set, “Annual PM2.5 Concentrations for Countries and Urban Areas, 1998–2016,” provides annual mean estimates of levels of particulate matter (particles with diameters of 2.5 microns or less) in the atmosphere, derived from observations from satellite-based sensors, for countries and urban areas. The national averages are population-weighted. This data set is based on a gridded data set developed by van Donkelaar et al., also available from SEDAC.

The data set “Global One-Eighth Degree Urban Land Extent Projection and Base Year Grids by SSP Scenarios, 2000–2100” was developed by Jing Gao of the University of Delaware and Brian O’Neill, now director of the Joint Global Change Research Institute at the University of Maryland. The data set characterizes global, spatially explicit urban land scenarios consistent with the SSPs, projected from the base year 2000 to the year 2100 at ten-year intervals, with a spatial resolution of one-eighth degree (7.5 arc-minutes). Such projections are key inputs for analyses of land use, energy use, and emissions and assessments of climate change vulnerability, impacts, and adaptation.

CIESIN is pleased to welcome Lixiang (Tracy) Wen as a finance manager, supporting the GeoReferenced Infrastructure and Demographic Data for Development (GRID3) program, the NASA Socioeconomic Data and Applications Center (SEDAC), and other projects. Tracy comes to CIESIN from the Columbia University Medical Center, where she worked as a financial analyst since 2016. She holds a bachelor of business administration in accounting from Baruch College.

CIESIN bids farewell to Anne-Laure White, research staff assistant, who has begun working at a sustainable farm in the Hudson Valley. A graduate of Columbia University in American Studies, White had diverse roles in the Geospatial Applications Division over the past three years, including co-authoring a recent report on coastal adaptation.

NASA’s Applied Remote Sensing Training Program (ARSET) offered a two-part training course, “Introduction to Population Grids and their Integration with Remote Sensing Data for Sustainable Development and Disaster Management,” on March 30 and April 6. The course was organized by CIESIN research scientist Susana Adamo on behalf of NASA’s Socioeconomic Data and Applications Center (SEDAC) and the POPGRID Data Collaborative, an international network of data providers, users, and sponsors concerned with georeferenced data on population, human settlements, and infrastructure. In the first session of the course, Prof. Steven Leyk of the University of Colorado and CIESIN associate director for Geospatial Applications Greg Yetman provided an overview of gridding population data, from its origins to present day applications in such areas as health, humanitarian response, sustainable development, and environmental management. The second session, organized around case studies of specific applications, featured lectures by CIESIN director Robert Chen, senior geographic information specialist Linda Pistolesi, and Charles Huyck, executive vice president of ImageCat Inc. More than 1,000 people from around the world participated in the course. Each session was given twice during the day, with live question-and-answer periods. Recordings of the sessions are available online via the ARSET web site.