Scientists
Research Grants
Scientific Publications
Informatics Research
NSIDC Scientific Expeditions
Scientists blog from Antarctica and provide a glimpse of what it's like to do research in the field. 
What's hot in the news around climate and sea ice and what are scientists talking about now? 
Data Sets
SMMR and SSM/I-SSMIS Data Sets
| Title | Spatial Coverage | Temporal Coverage | Spatial Resolution | Dataset Temporal Resolution | Parameter(s) |
|---|---|---|---|---|---|
| Arctic Sea Ice Seasonal Change and Melt/Freeze Climate Indicators from Satellite Data, Version 1 | N: 90, S: 30, E: 180, W: -180 | 1979/03/01 to 2018/02/28 | 25 km | 1 year | ICE GROWTH/MELT, SEA ICE CONCENTRATION |
| Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS, Version 3 |
N: -39, S: -90, E: 180, W: -180
N: 90, S: 30, E: 180, W: -180 |
1978/11/01 to 2021/05/31 | 25 km | 1 day, 1 month | SEA ICE CONCENTRATION |
| DMSP SSM/I-SSMIS Daily Polar Gridded Brightness Temperatures, Version 6 |
N: -39, S: -90, E: 180, W: -180
N: 90, S: 30, E: 180, W: -180 |
1987/07/09 to 2021/09/05 | 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 2020/12/31 | 12.5 km | 1 day | BRIGHTNESS TEMPERATURE |
| EASE-Grid Sea Ice Age, Version 4 | N: 90, S: 29.7, E: 180, W: -180 | 1984/01/01 to 2020/12/31 | 12.5 km | 7 day | SEA ICE AGE |
| 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 |
2.5 km | 12 hour | BRIGHTNESS TEMPERATURE |
| Global EASE-Grid 8-day Blended SSM/I and MODIS Snow Cover, Version 1 |
N: 90, S: 0, E: 180, W: -180
N: 0, S: -90, E: 180, W: -180 |
2000/03/05 to 2008/02/01 | 25 km | 8 day | MODIS snow-covered area (SCA), 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 | 25 km | 1 month | SNOW COVER, SNOW WATER EQUIVALENT |
| 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 |
| 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 | 12 hour | BRIGHTNESS TEMPERATURE | |
| 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 DMSP SSM/I-SSMIS Daily Polar Gridded Brightness Temperatures, Version 1 |
N: 90, S: 60, E: 180, W: -180
N: -60, S: -90, E: 180, W: -180 |
2016/04/01 | 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 | 2021/01/12 | 25 km | 1 day | BRIGHTNESS TEMPERATURE |
| Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 2 |
N: -39.23, S: -90, E: 180, W: -180
N: 90, S: 30.98, E: 180, W: -180 |
2021/11/01 | 25 km | 1 day | SEA ICE CONCENTRATION |
| 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 | 25 km | 1 day | SEA ICE CONCENTRATION, SNOW COVER |
| 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 |
| Nimbus-7 SMMR Polar Gridded Radiances and Sea Ice Concentrations, Version 1 |
N: -39, S: -90, E: 180, W: -180
N: 90, S: 30, E: 180, W: -180 |
1978/10/25 to 1987/08/20 | 25 km | 2 day | BRIGHTNESS TEMPERATURE, ICE EXTENT, SEA ICE CONCENTRATION |
| Northern Hemisphere EASE-Grid 2.0 Weekly Snow Cover and Sea Ice Extent, Version 4 | N: 90, S: 0, E: 180, W: -180 |
1966/10/03 to 2020/12/31 1978/10/23 to 2020/12/31 |
25 km | 7 day | SEA ICE, SNOW COVER |
| Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors, Version 4 |
N: -37, S: -90, E: 180, W: -180
N: 90, S: 29.7, E: 180, W: -180 |
1978/10/25 to 2020/12/31 | Varies | 1 day | ICE VELOCITY, SEA ICE MOTION |
| Quicklook Arctic Weekly EASE-Grid Sea Ice Age, Version 1 | N: 90, S: 29.7, E: 180, W: -180 | 2020/01/01 | 12.5 km | 7 day | SEA ICE AGE |
| Quicklook Arctic Weekly EASE-Grid Sea Ice Motion Vectors, Version 1 |
N: -37, S: -90, E: 180, W: -180
N: 90, S: 29.7, E: 180, W: -180 |
2020/01/01 | 25 km | 7 day | SEA ICE MOTION |
| Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 1 |
N: -39.23, S: -90, E: 180, W: -180
N: 90, S: 30.98, E: 180, W: -180 |
1978/10/26 to 2021/05/31 | 25 km | 1 day, 1 month | SEA ICE CONCENTRATION |
| Sea Ice Trends and Climatologies from SMMR and SSM/I-SSMIS, Version 3 |
N: 90, S: 30.98, E: 180, W: -180
N: -39.23, S: -90, E: 180, W: -180 |
1978/10/26 to 2020/12/31 | 25 km | Varies | ICE EXTENT, SEA ICE CONCENTRATION |
| Snow Melt Onset Over Arctic Sea Ice from SMMR and SSM/I-SSMIS Brightness Temperatures, Version 4 | N: 90, S: 30, E: 180, W: -180 | 1979/01/01 to 2017/12/31 | 25 km | 1 year | SNOW MELT |
