Data Sets

EASE-Grid Brightness Temperatures

Title Spatial Coverage Temporal Coverage Spatial Resolution Dataset Temporal Resolution Parameter(s)
AMSR-E/Aqua Daily EASE-Grid Brightness Temperatures, Version 1 N: 90, S: -90, E: 180, W: -180 2002/06/19 to 2011/09/27 25 km 1 day Brightness Temperature
DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures, Version 2 N: 90, S: -90, E: 180, W: -180 1987/07/09 to 2018/10/02 12.5 km 1 day Brightness Temperature
Enhanced-Resolution SSM/I and AMSR-E Daily Polar Brightness Temperatures, Version 1 N: -39, S: -90, E: 180, W: -180
N: 90, S: 30, E: 180, W: -180 		1995/01/01 to 2008/12/31
2002/01/01 to 2011/10/01 		12.5 km 12 hour Brightness Temperature
MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR, Version 1 N: 90, S: -90, E: 180, W: -180 1978/10/25 to 2017/07/01 12 hour Brightness Temperature
Near-Real-Time DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures, Version 1 N: 90, S: -90, E: 180, W: -180 2017/02/01 to 2018/01/30 25 km 1 day Brightness Temperature
Near-Real-Time DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures, Version 2 N: 90, S: -90, E: 180, W: -180 2018/03/01 25 km 1 day Brightness Temperature
Nimbus-7 SMMR Pathfinder Daily EASE-Grid Brightness Temperatures, Version 1 N: 90, S: -90, E: 180, W: -180 1978/10/25 to 1987/08/20 25 km 1 day Brightness Temperature
SMAP Enhanced L1C Radiometer Half-Orbit 9 km EASE-Grid Brightness Temperatures, Version 1 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 49 minute Brightness Temperature
SMAP Enhanced L1C Radiometer Half-Orbit 9 km EASE-Grid Brightness Temperatures, Version 2 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 49 minute Brightness Temperature
SMAP L1C Radiometer Half-Orbit 36 km EASE-Grid Brightness Temperatures, Version 3 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 36 km 49 minute Brightness Temperature
SMAP L1C Radiometer Half-Orbit 36 km EASE-Grid Brightness Temperatures, Version 4 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 36 km 49 minute Brightness Temperature

EASE-Grid Sea Ice

Title Spatial Coverage Temporal Coverage Spatial Resolution Dataset Temporal Resolution Parameter(s)
MEaSUREs Arctic Sea Ice Characterization Daily 25km EASE-Grid 2.0, Version 1 N: 90, S: 0, E: 180, W: -180 1979/01/01 to 2012/12/31 25 km 1 day Ice Extent, Sea Ice Age, Snow Melt
MODIS/Aqua Sea Ice Extent and IST Daily L3 Global 4km EASE-Grid Day, Version 6 N: 90, S: -90, E: 180, W: -180 2002/07/04 4 km 1 day Ice Extent, Ice Temperature
MODIS/Aqua Sea Ice Extent Daily L3 Global 1km EASE-Grid Day, Version 6 N: 90, S: -90, E: 180, W: -180 2002/07/04 1 km 1 day Ice Extent, Ice Temperature
MODIS/Aqua Sea Ice Extent Daily L3 Global 1km EASE-Grid Night, Version 6 N: 90, S: -90, E: 180, W: -180 2002/07/04 1 km 1 day Ice Temperature
MODIS/Terra Sea Ice Extent and IST Daily L3 Global 4km EASE-Grid Day, Version 6 N: 90, S: -90, E: 180, W: -180 2000/02/24 4 km 1 day Ice Extent, Ice Temperature
MODIS/Terra Sea Ice Extent Daily L3 Global 1km EASE-Grid Day, Version 6 N: 90, S: -90, E: 180, W: -180 2000/02/24 1 km 1 day Ice Extent, Ice Temperature
MODIS/Terra Sea Ice Extent Daily L3 Global 1km EASE-Grid Night, Version 6 N: 90, S: -90, E: 180, W: -180 2000/02/24 1 km 1 day Ice Temperature
Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors, Version 3 N: -53.2028, S: -90, E: 180, W: -180
N: 90, S: 48.4, E: 180, W: -180 		1978/10/25 to 2017/02/28 25 km 1 month, 7 day, 1 day Ice Velocity, Sea Ice Motion
Sea Ice Charts of the Russian Arctic in Gridded Format, 1933-2006, Version 1 N: 90, S: 60, E: 180, W: -24
N: 90, S: 60, E: -130, W: -180 		1997/01/01 to 2006/12/31
1933/01/01 to 1992/12/31 		12.5 10 day Ice Types, Sea Ice Concentration

EASE-Grid Snow and Sea Ice

Title Spatial Coverage Temporal Coverage Spatial Resolution Dataset Temporal Resolution Parameter(s)
MEaSUREs Northern Hemisphere Terrestrial Snow Cover Extent Daily 25km EASE-Grid 2.0, Version 1 N: 90, S: 0, E: 180, W: -180 1999/01/01 to 2012/12/31 25 km 1 day Snow Cover
Near-Real-Time SSM/I-SSMIS EASE-Grid Daily Global Ice Concentration and Snow Extent, Version 5 N: 90, S: -90, E: 180, W: -180 2016/12/01 1 day Ice Extent, Sea Ice Concentration, Snow Cover
Northern Hemisphere EASE-Grid 2.0 Weekly Snow Cover and Sea Ice Extent, Version 4 N: 90, S: 0, E: 180, W: -180 1978/10/23 to 2017/12/31
1966/10/03 to 1978/10/23 		25 km 7 day Ice Extent, Snow Cover

EASE-Grid Snow Water Equivalent

Title Spatial Coverage Temporal Coverage Spatial Resolution Dataset Temporal Resolution Parameter(s)
AMSR-E/Aqua 5-Day L3 Global Snow Water Equivalent EASE-Grids, Version 2 N: 90, S: -90, E: 180, W: -180
2002/06/20 to 2011/10/03
 25 km 1 day Snow Water Equivalent
AMSR-E/Aqua Daily L3 Global Snow Water Equivalent EASE-Grids, Version 2 N: 90, S: -90, E: 180, W: -180
2002/06/19 to 2011/10/03
 25 km 1 day Snow Water Equivalent
AMSR-E/Aqua Monthly L3 Global Snow Water Equivalent EASE-Grids, Version 2 N: 90, S: -90, E: 180, W: -180
2002/06/19 to 2011/10/01
 25 km 1 month Snow Water Equivalent
Global EASE-Grid 8-day Blended SSM/I and MODIS Snow Cover, Version 1 N: 0, S: -90, E: 180, W: -180
N: 90, S: 0, E: 180, W: -180
2000/03/05 to 2008/02/01
 25 km 8 day Snow Cover, Snow Water Equivalent
Global Monthly EASE-Grid Snow Water Equivalent Climatology, Version 1 N: 90, S: -90, E: 180, W: -180
1978/01/01 to 2007/12/31
 1 month Snow Cover, Snow Water Equivalent

EASE-Grid Frozen Ground

Title Spatial Coverage Temporal Coverage Spatial Resolution Dataset Temporal Resolution Parameter(s)
Arctic Soil Freeze/Thaw Status from SMMR and SSM/I, Version 2 N: 90, S: 45, E: 180, W: -180 1978/10/01 to 2004/06/30 25 km 1 day Freeze/Thaw, Seasonally Frozen Ground
Circum-Arctic Map of Permafrost and Ground-Ice Conditions, Version 2 N: 90, S: 28, E: 180, W: -180 Ground Ice, Permafrost
Map of Natural (Landscape) and Permafrost Zones and the Net of Soil Temperature Meteorological Stations in Russia and Middle Asian Mountains, Version 1 N: 90, S: 32, E: 163, W: 10 Frozen Ground, Landscape, Landscape Patterns, Permafrost, Thaw Depth
Maps of Geocryological Regions and Classifications in China, Version 1 N: 53.48, S: 18.19, E: 135.09, W: 73.45 Active Layer, Air Temperature, Permafrost, Seasonally Frozen Ground
SMAP Enhanced L3 Radiometer Global and Northern Hemisphere Daily 9 km EASE-Grid Freeze/Thaw State, Version 2 N: 85.044, S: -85.044, E: 180, W: -180
N: 85.044, S: 45, E: 180, W: -180 		2015/03/31 9 km 1 day Brightness Temperature, Freeze/Thaw State, Transition Direction
SMAP Enhanced L3 Radiometer Northern Hemisphere Daily 9 km EASE-Grid Freeze/Thaw State, Version 1 N: 85.044, S: 45, E: 180, W: -180 2015/03/31 9 km 1 day Brightness Temperature, Freeze/Thaw State, Transition Direction
SMAP L3 Radar Northern Hemisphere Daily 3 km EASE-Grid Freeze/Thaw State, Version 3 N: 85.044, S: 45, E: 180, W: -180 2015/04/13 to 2015/07/07 3 km 1 day Freeze/Thaw State, Sigma Nought, Transition Direction
SMAP L3 Radiometer Global and Northern Hemisphere Daily 36 km EASE-Grid Freeze/Thaw State, Version 2 N: 85.044, S: 45, E: 180, W: -180
N: 85.044, S: -85.044, E: 180, W: -180 		2015/03/31 36 km 1 day Brightness Temperature, Freeze/Thaw State, Transition Direction
SMAP L3 Radiometer Northern Hemisphere Daily 36 km EASE-Grid Freeze/Thaw State, Version 1 N: 85.044, S: 45, E: 180, W: -180 2015/03/31 36 km 1 day Brightness Temperature, Freeze/Thaw State, Transition Direction

EASE-Grid Other Products

Title Spatial Coverage Temporal Coverage Spatial Resolution Dataset Temporal Resolution Parameter(s)
AMSR-E/Aqua Daily L3 Surface Soil Moisture, Interpretive Parameters, & QC EASE-Grids, Version 2 N: 89.24, S: -89.24, E: 180, W: -180 2002/06/19 to 2011/10/03 25 km 1 day Brightness Temperature, Microwave Imagery, Soil Moisture/Water Content, Vegetation Water Content
SMAP Enhanced L2 Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture, Version 1 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 49 minute Brightness Temperature, Soil Moisture
SMAP Enhanced L2 Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture, Version 2 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 49 minute Brightness Temperature, Soil Moisture
SMAP Enhanced L3 Radiometer Global Daily 9 km EASE-Grid Soil Moisture, Version 1 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 1 day Brightness Temperature, Soil Moisture
SMAP Enhanced L3 Radiometer Global Daily 9 km EASE-Grid Soil Moisture, Version 2 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 1 day Brightness Temperature, Soil Moisture
SMAP L2 Radar Half-Orbit 3 km EASE-Grid Soil Moisture, Version 3 N: 85.044, S: -85.044, E: 180, W: -180 2015/04/13 to 2015/07/07 3 km 49 minute Sigma Nought, Soil Moisture
SMAP L2 Radar/Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture, Version 3 N: 85.044, S: -85.044, E: 180, W: -180 2015/04/13 to 2015/07/07 9 km 49 minute Brightness Temperature, Sigma Nought, Soil Moisture
SMAP L2 Radiometer Half-Orbit 36 km EASE-Grid Soil Moisture, Version 4 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 36 km 49 minute Brightness Temperature, Soil Moisture
SMAP L2 Radiometer Half-Orbit 36 km EASE-Grid Soil Moisture, Version 5 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 36 km 49 minute Brightness Temperature, Soil Moisture
SMAP L3 Radar Global Daily 3 km EASE-Grid Soil Moisture, Version 3 N: 85.044, S: -85.044, E: 180, W: -180 2015/04/13 to 2015/07/07 3 km 1 day Sigma Nought, Soil Moisture
SMAP L3 Radar/Radiometer Global Daily 9 km EASE-Grid Soil Moisture, Version 3 N: 85.044, S: -85.044, E: 180, W: -180 2015/04/13 to 2015/07/07 9 km 1 day Brightness Temperature, Sigma Nought, Soil Moisture
SMAP L3 Radiometer Global Daily 36 km EASE-Grid Soil Moisture, Version 4 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 36 km 1 day Brightness Temperature, Soil Moisture
SMAP L3 Radiometer Global Daily 36 km EASE-Grid Soil Moisture, Version 5 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 36 km 1 day Brightness Temperature, Soil Moisture
SMAP L4 9 km EASE-Grid Surface and Root Zone Soil Moisture Analysis Update, Version 2 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 3 hour Root Zone Soil Moisture, Surface Soil Moisture
SMAP L4 9 km EASE-Grid Surface and Root Zone Soil Moisture Analysis Update, Version 3 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 3 hour Root Zone Soil Moisture, Surface Soil Moisture
SMAP L4 9 km EASE-Grid Surface and Root Zone Soil Moisture Geophysical Data, Version 2 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 3 hour Root Zone Soil Moisture, Surface Soil Moisture
SMAP L4 9 km EASE-Grid Surface and Root Zone Soil Moisture Geophysical Data, Version 3 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 3 hour Root Zone Soil Moisture, Surface Soil Moisture
SMAP L4 9 km EASE-Grid Surface and Root Zone Soil Moisture Land Model Constants, Version 2 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 3 hour Soil Classification, Soil Depth, Soil Porosity, Soil Texture, Terrain Elevation
SMAP L4 9 km EASE-Grid Surface and Root Zone Soil Moisture Land Model Constants, Version 3 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km Soil Classification, Soil Depth, Soil Porosity, Soil Texture, Terrain Elevation
SMAP L4 Global 3-hourly 9 km EASE-Grid Surface and Root Zone Soil Moisture Analysis Update, Version 4 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 3 hour Root Zone Soil Moisture, Surface Soil Moisture
SMAP L4 Global 3-hourly 9 km EASE-Grid Surface and Root Zone Soil Moisture Geophysical Data, Version 4 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 3 hour Root Zone Soil Moisture, Surface Soil Moisture
SMAP L4 Global 9 km EASE-Grid Surface and Root Zone Soil Moisture Land Model Constants, Version 4 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km Not applicable Soil Classification, Soil Depth, Soil Porosity, Soil Texture, Terrain Elevation
SMAP L4 Global Daily 9 km Carbon Net Ecosystem Exchange, Version 2 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 1 day Gross Primary Productivity (GPP), Heterotrophic Respiration (Rh), Net Ecosystem CO2 Exchange (NEE), Soil Organic Carbon (SOC)
SMAP L4 Global Daily 9 km Carbon Net Ecosystem Exchange, Version 3 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 1 day Gross Primary Productivity (GPP), Heterotrophic Respiration (Rh), Net Ecosystem CO2 Exchange (NEE), Soil Organic Carbon (SOC)
SMAP L4 Global Daily 9 km EASE-Grid Carbon Net Ecosystem Exchange, Version 4 N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km 1 day Gross Primary Productivity (GPP), Heterotrophic Respiration (Rh), Net Ecosystem CO2 Exchange (NEE), Soil Organic Carbon (SOC)
SMAP/Sentinel-1 L2 Radiometer/Radar 30-Second Scene 3 km EASE-Grid Soil Moisture, Version 1 N: 60, S: -60, E: 180, W: -180 2015/04/01 3 km 30 second Brightness Temperature, Sigma Nought, Soil Moisture
SMAP/Sentinel-1 L2 Radiometer/Radar 30-Second Scene 3 km EASE-Grid Soil Moisture, Version 2 N: 60, S: -60, E: 180, W: -180 2015/03/31 3 km 30 second Brightness Temperature, Sigma Nought, Soil Moisture
TOVS Pathfinder Path-P Daily and Monthly Polar Gridded Atmospheric Parameters, Version 1 N: 90, S: 60, E: 180, W: -180
N: -60, S: -90, E: 180, W: -180 		1979/01/01 to 2005/12/31
1979/07/12 to 2001/12/31 		100 km 1 day, 1 month Air Temperature, Cloud Top Pressure, Cloud Top Temperature, Effective Cloud Fraction, Emissivity, Geostrophic Drag Coefficient

EASE-Grid Ancillary

Ancillary data products are described in more detail on the Ancillary Data Web page. These global data sets are derived from MODIS (Collection 4) data obtained between July 1 and December 31, 2000 and developed by the Boston University Land Cover and Surface Climate Group. They can be used to examine, for example, fractional coverage of specific land cover types or the average elevation in EASE-Grid pixels at various resolutions.
Title Spatial Resolutions Parameter(s)
EASE-Grid 2.0 Land Cover Classifications Derived from Boston University MODIS/Terra Land Cover Data, Version 1 3 km x 3 km; 5 km x 5 km; 6.25 km x 6.25 km Land Cover Classification
EASE-Grid 2.0 Land-Ocean-Coastline-Ice Masks Derived from Boston University MODIS/Terra Land Cover Data, Version 1 3 km x 3 km; 5 km x 5 km; 6.25 x 6.25 km Land Cover
EASE-Grid Land Cover Classifications Derived from Boston University MODIS/Terra Land Cover Data, Version 1 12.5 km x 12.5 km; 25 km x 25 km Land Cover Classification
EASE-Grid Land-Ocean-Coastline-Ice Masks Derived from Boston University MODIS/Terra Land Cover Data, Version 1 12.5 km x 12.5 km; 25 km x 25 km Land Cover