Tokyo, Japan and The Hague, Netherlands. The ICSU World Data System (ICSU-WDS) and the Data Seal of Approval (DSA) are pleased to announce the launch of a new certification organization: CoreTrustSeal . The CoreTrustSeal Board offers all interested data repositories a core-level certification based on the DSA–WDS Core Trustworthy Data Repositories Requirements catalogue and ...
The Call for Nominations for the 2017 WDS Data Stewardship Award is now closed. This annual prize celebrates the exceptional contributions of early career researchers to the improvement of scientific data stewardship through their (1) engagement with the community, (2) academic achievements, and (3) innovations. Thank you to everyone who sent in a nomination. The winner will now be selected ...
After the popularity and success of the inaugural series of entries by WDS Scientific Committee (WDS-SC) members on the WDS Blog , we are very pleased to announce the start of a second round of monthly WDS-SC posts. These posts will span the year leading up to International Data Week 2018, and as ever, will cover topics that the WDS-SC are currently involved in and that we hope are of ...
The World Data System (WDS) is a body of the International Council for Science (ICSU) that helps to coordinate and supports research data centres and date services worldwide. Our activities span all disciplines, and are designed to ensure that research data are preserved and openly disseminated to safeguard the integrity of science. WDS is also concerned with the availability to scientists and ...
From People to Pixels: Integrating Data Across the NASA DAACs
A Blog post by Lindsey M. Harriman (SGT, Inc. Contractor to USGS EROS Center/LP DAAC) and Alex de Sherbinin (WDS Scientific Committee member)
Socioeconomic and Earth Sciences researchers in search of pertinent data can now reap the benefits of a recent collaboration between two Regular Members of the ICSU World Data System.
Today, our planet supports about 7.6 billion people, with a projected increase to nearly 10 billion by 2050, and more than 11 billion by 2100. These 7.6 billion people are using land and water resources to meet their basic needs. As the population increases, their use of, and their impact on, Earth’s resources is going to change. Researchers who study the dynamics between such human–land interactions and their changes over time will look at a range of variables, such as surface temperature, vegetation health, forest cover extent, and change in land cover and habitat, as well as impacts of natural disasters, and climate trends and extremes.
Research questions that often ask about such dynamics include:
- What is the proximity between populated areas and fire occurrences over time?
- What is the correlation between the increase of population and land surface temperature in urban areas?
- How has population affected land-cover change and vegetation growth over time in urban sprawl areas?
- How will land-cover changes affect flood and drought risk around rural and urban settlements?
To answer these types of questions, researchers need to integrate census data with Earth observation data, including data collected by NASA’s Earth Science Division Operating Missions. Recently, two NASA Distributed Active Archive Centers (DAACs)—the Land Processes DAAC (LP DAAC; WDS Regular Member) and the Socioeconomic Data and Applications Center (SEDAC; WDS Regular Member)—collaborated to make that integration much easier. LP DAAC and SEDAC worked together to provide access to georeferenced population data alongside land remote sensing data in the Application for Extracting and Exploring Analysis Ready Samples (AppEEARS). SEDAC’s Gridded Population of the World version 4 (GPWv4) aggregates census data from around the world into a globally consistent grid with 30 arc-second resolution (1 kilometer at the equator) for population density and counts. Soon researchers will also have access to age and sex distribution grids. LP DAAC disseminates land remote sensing data collected by several NASA missions—including from the popular Moderate Resolution Imaging Spectroradiometer (MODIS) sensor onboard Terra and Aqua—and provides access to a selection of these datasets through AppEEARS.
Figure 1. Daily land surface temperature in Kelvin (K) and population trend, 2010–2017 for rural and urban points in North Carolina (based on MODIS MOD11A1 daily 1-km data and GPWv4, UN-Adjusted)
(a) Farm northwest of Nashville, North Carolina, USA. The red pin represents the location 36°N, 78°W. Image: Google Maps. Time series plots: output from AppEEARS.
(b) Suburban area of Charlotte, North Carolina, USA, experiencing rapid population growth. The red pin represents the approximate location 35°N, 81°W). Image: Google Maps. Time series plots: output from AppEEARS.
Figure 1 provides examples of time series plots of population growth and daily land surface temperature using the Point Sample function in AppEEARS. Users can interact with these visualizations within the application and also download the data values in comma separated value format.
Additionally, LP DAAC has collaborated with a third DAAC, the National Snow and Ice Data Center DAAC (NSIDC DAAC; WDS Regular Member), to provide MODIS snow-cover data from its archive for access through AppEEARS as an additional variable describing land dimension. SEDAC, LP DAAC, and NSIDC DAAC are all part of NASA’s Earth Observing System Data and Information System, and through their collaborations, AppEEARS now provides access to more than 100 data products from the three data centers in a single place, at no cost to the user. Many possible combinations of data can be extracted from AppEEARS for use in analyses of the dynamics between populations and ecosystems over time.
AppEEARS also provides benefits during the data preparation process. When performing a sample request, users drastically reduce the amount of data they ultimately need to download to perform their analysis. AppEEARS enables users to subset data based on geographic and temporal parameters, as well as by specific data layer. Since users can reformat the data and reproject within the application, the amount of post-processing required is reduced. Furthermore, AppEEARS not only provides data values, but also quality data values and their descriptions, when applicable. Lastly, users can visualize plots of the data values (point sample) or summary statistics (area samples) from the sample request within the application.
The collaboration around AppEEARS represents an initial step away from the idea that users need to download large amounts of data for local filtering, processing, integration, and analysis, and moves towards a model where analysis-ready data can be more immediately accessed. Coordinated tools and application development on the substantial holdings of all 12 DAACs is an important strategic direction for NASA’s Earth Science Data and Information System Project (WDS Network Member).
So, what’s your use case for AppEEARS?
Additional information about the DAACs mentioned above can be found here:
- SEDAC: http://sedac.ciesin.columbia.edu/
- LP DAAC: https://lpdaac.usgs.gov/
- NSIDC DAAC: https://nsidc.org/daac
Have questions about AppEEARS? Email: email@example.com.
Finding Paleoclimate Data via the World Data Service for Paleoclimatology Just Got Easier
A Blog post by Wendy S. Gross, and Eugene R. Wahl, (World Data Service for Paleoclimatology)
The World Data Service for Paleoclimatology (WDS Regular Member; https://www.ncdc.noaa.gov/paleo), housed at the National Oceanic and Atmospheric Administration's National Centers for Environmental Information, provides data and information to understand natural climate variability and future climate change.
Paleoclimatology is the study of ancient climates, prior to the widespread availability of instrumental records. Paleoclimatologists study several different types of environmental proxy evidence to understand what the Earth’s past climate was like and why.
Paleoclimate proxies and reconstructions used to understand the Earth’s past climate.
Finding the paleoclimate data you need among the greater than thirteen thousand studies, covering the globe and freely available online, just got easier. With our new web service, you can search for data across a wide range of proxy types and climate reconstructions. The new service integrates all of the capabilities of our previous search mechanisms, allowing them to be used together in new and powerful ways, and in conjunction with logical operators.
Geographic coverage of World Data Service for Paleoclimatology data.
There are multiple ways to search for relevant data: input a search term into the general search text box, select a data type from the menu, narrow your selections in the advanced search feature, or use all these capabilities together. The search automatically builds an application programming interface for you based on your search criteria that you can then reuse in the future. After inputting your search criteria, the results will be populated with all relevant studies, as well as providing an overview of the metadata that links to any additional data and information.
A new feature is a section of the site that hosts predefined searches paleoclimatology scientists have found most useful in the past. You'll be able to select one or multiple data types, such as ice cores or corals, from the list assembled by scientists, and the search will produce the most relevant and noteworthy studies related to that topic. In addition, the predefined searches page enables you to jointly query by location and data type. You’ll also be able to search through every study related to a specific data type, with user-friendly columns that allow you to easily sort through the studies.
Using the new web service can help you discover information on topics such as:
• Finding common years of great drought or wetness across specific regions
• Coral records related to El Niño occurrences
• Air temperature reconstructions
The World Data Service for Paleoclimatology archives and distributes data contributed by thousands of scientists around the world. We highly appreciate their long-lasting contributions of data submission, and our collaborations with them. To contact the World Data Service for Paleoclimatology, please email: firstname.lastname@example.org.
Essential Climate Variables – Global Glacier Change Data Indicate Continued Strong Ice Losses in 2015 and 2016
A Blog post by Isabelle Gärtner-Roer (WDS Scientific Committee member)
Changes in glaciers provide some of the clearest evidence of climate change, and as such they constitute key indicators and unique demonstration objects of ongoing climate change. Beside this scientific aspect, glacier changes have an impact on local hazard situations, regional water cycles, and global sea level.
The Global Terrestrial Network for Glaciers (GTN-G) is the framework for the internationally coordinated monitoring of glaciers in support of the United Nations Framework Convention on Climate Change. Within GTN-G, the World Glacier Monitoring Service affiliated at the University of Zurich, Switzerland (WGMS, WDS Regular Member)—which celebrated its 30th anniversary last year—is responsible for the collection and documentation of glacier fluctuations such as annual mass balances and length changes.
Figure 1. Mean annual mass balance of reference glaciers.
Latest mass balance data of the hydrological period 2014/15 and preliminary estimates for 2015/16 indicate continued strong ice losses. In fact, after 2002/03, 2014/15 is the second most negative year since the beginning of the monitoring program at WGMS (as shown in Fig. 1 for glaciers with long, continuous measurement programmes; the so-called 'reference glaciers'). This value is negative despite most of the glaciers in Norway and Iceland, as well as the few that are monitored in New Zealand and Antarctica, showing positive balances in the corresponding year (see Table 3 on this page). Since 1999/00, WGMS has already documented four years with a global mean ice thickness loss of more than 1000 millimetre water equivalent (mm w.e.). These new data show a continuation in the global trend of strong ice losses over the past few decades, and bring the cumulative average thickness loss since 1980 of the reference glaciers to almost 20.000 mm w.e.
As a Regular Member of the ICSU World Data System, WGMS publishes glacier data in a standardized format and makes them freely available to scientists, policy makers, and the wider public. Access is provided online through the 'Fluctuations of Glaciers Browser' and the 'Glacier App', as well as being consolidated in the 'Global Glacier Change Bulletin'.
Figure 2. Training course on glacier mass balance in La Paz, Bolivia (Photo: M. Zemp)
Upcoming challenges in glacier monitoring are very much related to the disintegration and vanishing of glaciers. Some of the glaciers under monitoring programmes disintegrate into several parts, while others—such as the Lewis Glacier on Mount Kenya—completely disappear. These issues demand continuous adaptation of monitoring strategies on both a local and global level. This is one reason why WGMS organizes training courses for Principal Investigators who perform glacier measurements and deliver their glacier data to WGMS. The last training course was held in 2016, with participants from Latin America (Mexico, Colombia, Ecuador, Peru, Bolivia, Chile, and Argentina) joining who are involved in ongoing mass balance programmes in their region (see Fig. 2). These participants were trained in both fieldwork and data analysis by an international team of experts in glacier monitoring and capacity building.
Our work relies on the cooperation and help of many scientists and observers throughout the world. We highly appreciate their long-lasting contributions in collaboration with our National Correspondents coordinating the collection of data in their country for submission to WGMS.
WorldWideScience Alliance: An International Partnership to Improve Access to Scientific and Technical Information and Research Data
A Blog post by Lorrie Apple Johnson (WorldWideScience Alliance Operating Agent)
The WorldWideScience Alliance is a strategic partnership between national and international libraries and data and information centres from around the world. The ICSU World Data System and the WorldWideScience Alliance share reciprocal Associate Memberships, and both organizations are committed to eliminating barriers associated with finding and sharing scientific and technical information, including scientific research data. The Alliance provides the governance structure for the global science gateway, WorldWideScience.org (WWS.org), which facilitates federated searching across over 100 scientific and technical databases from more than 70 countries. The WDS Data Portal is among the data collections searched by WWS.org, along with 14 other resources focussed on data, and the Alliance is actively seeking new data resources and partners.
The federated search technology employed by WWS.org offers users a number of distinct advantages, including the ability to perform a real-time, simultaneous search of multiple databases, some of which may not be indexed by typical search engines. Users receive a consolidated, relevance-ranked results list incorporating information in textual, multimedia, and scientific data formats. Multilingual translations capabilities are automatically performed in ten languages, which makes scholarly material, including scientific data, more accessible to a worldwide audience.
The ability to search data collections within WWS.org also addresses many of the challenges associated with discoverability of research data. For example, unless a user is familiar with a particular data centre, or knows that a specific dataset exists, it can be difficult to identify and locate scientific data; especially those outside of the researcher’s own discipline or speciality. WWS.org enables users to receive data results in a separate results tab, and upon selecting a specific result, users will be directed to the landing page at the originating source, which in turn makes the data accessible for viewing or downloading. The inclusion of data collections in WWS.org, particularly as part of the broader public access movement among government research funders in many countries, further expands access to Research and Development results during the full research lifecycle, and ultimately contributes to increased scientific collaboration and progress.
The WorldWideScience Alliance is eager to include new resources in WWS.org, and feedback is always welcome.
For more information about WWS.org and the Alliance, please visit http://worldwidescience.org/.