-
Federal
Gridded Population of the World, Version 4 (GPWv4): Population Density, Revision 11
National Aeronautics and Space Administration —
The Gridded Population of the World, Version 4 (GPWv4): Population Density, Revision 11 consists of estimates of human population density (number of persons per... -
Federal
Northern Hemisphere EASE-Grid 2.0 Weekly Snow Cover and Sea Ice Extent, Version 4
National Aeronautics and Space Administration —
The main parameters for this data set are snow cover and sea ice extent; both parameters are derived from SMMR and DMSP-F8, -F11, -F13, and -F17 SSM/I and SSMIS... -
Federal
China Dimensions Data Collection: China County-Level Data on Population (Census) and Agriculture, Keyed to 1:1M GIS Map
National Aeronautics and Space Administration —
The China County-Level Data on Population (Census) and Agriculture, Keyed To 1:1M GIS Map consists of census, agricultural economic, and boundary data for the... -
Federal
Global Cyclone Mortality Risks and Distribution
National Aeronautics and Space Administration —
The Global Cyclone Mortality Risks and Distribution is a 2.5 minute grid of global cyclone mortality risks. Gridded Population of the World, Version 3 (GPWv3) data... -
Federal
Global Vegetation Greenness (NDVI) from AVHRR GIMMS-3G+, 1981-2022
National Aeronautics and Space Administration —
This dataset holds the Global Inventory Modeling and Mapping Studies-3rd Generation V1.2 (GIMMS-3G+) data for the Normalized Difference Vegetation Index (NDVI). NDVI... -
Federal
ASIAS - Some History
National Aeronautics and Space Administration —
The ASIAS effort builds on demonstrations that an open exchange of information contributes to improved aviation safety. ASIAS is a comprehensive effort, covering the... -
Federal
Fireball And Bolide Reports
National Aeronautics and Space Administration —
Fireballs and bolides are astronomical terms for exceptionally bright meteors that are spectacular enough to to be seen over a very wide area. The following table... -
Federal
Space Shuttle Main Propulsion System Anomaly Detection: A Case Study
National Aeronautics and Space Administration —
The space shuttle main engine (SSME) is part of the Main Propnlsion System (MPS) which is an extremely complex system containing several sub-systems and components,... -
Federal
Space-weather HMI Active Region Patch (SHARP)
National Aeronautics and Space Administration —
SHARP stands for Space-weather HMI Active Region Patch. A SHARP is a DRMS series that contains (1) various space-weather quantities calculated from the photospheric... -
Federal
Global Rural-Urban Mapping Project, Version 1 (GRUMPv1): Urban Extent Polygons, Revision 02
National Aeronautics and Space Administration —
The Global Rural-Urban Mapping Project, Version 1 (GRUMPv1): Urban Extent Polygons, Revision 02 is an update to Revision 01, which included new settlements and... -
Federal
Catalog of Galactic OB Stars
National Aeronautics and Space Administration —
An all-sky catalog of Galactic OB stars has been created by extending the Case-Hamburg Galactic Plane Luminous Stars surveys to include 5,500 additional objects drawn... -
Federal
Washington Double Star Catalog
National Aeronautics and Space Administration —
The Washington Double Star Catalog (WDS), maintained by the United States Naval Observatory (USNO), is the world's principal database of astrometric double and... -
Federal
Temperature Stratification in a Cryogenic Fuel Tank
National Aeronautics and Space Administration —
A reduced dynamical model describing temperature stratification effects driven by natural convection in a liquid hydrogen cryogenic fuel tank has been developed. It... -
Federal
Diagnosing Faults in Electrical Power Systems of Spacecraft and Aircraft
National Aeronautics and Space Administration —
Electrical power systems play a critical role in spacecraft and aircraft, and they exhibit a rich variety of failure modes. This paper discusses electrical power... -
Federal
SBIR/STTR Programs
National Aeronautics and Space Administration —
The NASA SBIR and STTR programs fund the research, development, and demonstration of innovative technologies that fulfill NASA needs as described in the annual... -
Federal
CYGNSS L3 Ocean Microplastic Concentration V1.0
National Aeronautics and Space Administration —
This dataset contains the version 1.0 CYGNSS level 3 ocean microplastic concentration data record, which provides 18 netCDF files, each containing one month of daily... -
Federal
MODIS/Terra+Aqua Land Cover Type Yearly L3 Global 500m SIN Grid V006
National Aeronautics and Space Administration —
The MCD12Q1 Version 6 data product was decommissioned on July 31, 2023. Users are encouraged to use the MCD12Q1 Version 6.1 data product.The Terra and Aqua combined... -
Federal
Global Gridded Geographically Based Economic Data (G-Econ), Version 4
National Aeronautics and Space Administration —
The Global Gridded Geographically Based Economic Data (G-Econ), Version 4 contains derived one degree grid cells of Gross Domestic Product (GDP) data in Grid and... -
Federal
VIIRS/NPP Thermal Anomalies and Fire Daily L3 Global 1km SIN Grid V001
National Aeronautics and Space Administration —
The daily NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Thermal Anomalies/Fire (VNP14A1) Version 1... -
Federal
CORONA Satellite Photographs from the U.S. Geological Survey
National Aeronautics and Space Administration —
The first generation of U.S. photo intelligence satellites collected more than 860,000 images of the Earth’s surface between 1960 and 1972. The classified military...