The Aura Validation Data Center (AVDC) is a centralized, long-term, archive for validation data hosted by the Atmospheric Chemistry and Dynamics Branch at the National Aeronautics and Space Administration (NASA) Goddard Space Flight Center (GSFC) in Greenbelt, Maryland.
Up-to-date satellite observations of the sea ice covers of both the Arctic and the Antarctic, along with comparisons with the historical satellite record of more than 4 decades.
FLDAS is the Famine Early Warning Systems Network (FEWS NET) Land Data Assimilation System. The FLDAS is a custom instance of the NASA Land Information System (LIS) that has been adapted to work with domains, data streams, and monitoring and forecast requirements associated with food security assessment in data-sparse, developing country settings.
The goal of the Global Land Data Assimilation System (GLDAS; http://ldas.gsfc.nasa.gov) is to ingest satellite- and ground-based observational data products, using advanced land surface modeling and data assimilation techniques, in order to generate optimal fields of land surface states and fluxes (Rodell et al., 2004a).
The GSFC time variable gravity mascon products optimize the signal-to-noise ratio through the application of spatial regularization in the estimation of both monthly and high-resolution trends from GRACE and GRACE-FO Level 1B data. These mascon products do not require any additional filtering prior to their research application.
We have developed wetness/drought indicator maps for shallow groundwater and surface and root zone soil moisture. The maps integrate data from multiple ground and space based observing systems, including NASA's Gravity Recovery and Climate Experiment (GRACE) satellite mission.
Rainfall-triggered landslides affect nearly every state in the U.S. and every country in the world, causing significant economic damage and resulting in thousands of fatalities each year. Characterizing and modeling these hazards over large scales is challenging due to the fairly small areas over which they typically occur. A new website has been developed to provide a regional and global perspective on rainfall-triggered landslides.
The NASA-USDA Global soil moisture data provides soil moisture information across the globe at 0.25°x0.25°spatial resolution.
NASA’s Energy and Water Cycle Study (NEWS) program supported an assessment of the state of the global water and energy cycles at the start of the millennium, based on data from the most advanced space and ground based measurement systems and output from observation-integrating models.
Access regional satellite data products from SeaWiFS, MODIS Aqua and Terra, MERIS, OCTS, CZCS, and Aquarius
Website: Ocean Color Level-1 -2 Browser
Daily and weekly satellite data are provided in color visualizations together with time series animations of the key variables in support of the Distributed Biological Observatory (DBO), a multi-agency program in the Arctic.
The datasets below contain sea surface salinity retrieved by NASA’s Aquarius instrument collocated with in situ measurements by the Argo network of free drifting profiling floats. Sea surface salinity for Argo is defined as the shallower measurements reported by an Argo float as long as that measurement was reported for a depth of 10 m or less. Aquarius SSS, derived from L-band radiometry, are representative of the first few centimeters of the ocean surface layer.
