FTP Data Distribution is no longer available for this data set. The NASA NSIDC DAAC now distributes data through HTTPS, which requires users to log in with an Earthdata Login username and password. Data will continue to be available free of charge.

Get Data

DOWNLOADING DATA VIA HTTPS

To learn more about Earthdata Login and register for an account, please see How to Register with Earthdata Login. Once you have logged in, data can be downloaded via a Web browser, command line, or client. For help with downloading data, please see Options Available for Bulk Downloading Data from HTTPS with Earthdata Login.

HTTPS

Data Set ID:
NSIDC-0302

AMSR-E/Aqua Daily Global Quarter-Degree Gridded Brightness Temperatures, Version 1

The Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) instrument on the NASA EOS Aqua satellite provides global passive microwave measurements of the Earth. NSIDC produces AMSR-E gridded brightness temperature data by interpolating AMSR-E data (6.9 GHz, 10.7 GHz, 18.7 GHz, 23.8 GHz, 36.5 GHz, and 89.0 GHz) to the output grids from swath space using an inverse-distance squared method. AMSR-E/Aqua L2A Global Swath Spatially-Resampled Brightness Temperatures (AE_L2A) input source data are used to create the gridded brightness temperature data.

These data are provided in one global cylindrical, equidistant latitude-longitude projection at 0.25 degree (quarter-degree) resolution. Spatial coverage is global, data are daily, and coverage begins 19 June 2002, and ends 27 September 2011.

Data are provided via FTP. Brightness temperature data (in tenths of kelvins) are two-byte unsigned integers and time files are two-byte signed integers.

Geographic Coverage

Spatial Coverage:
  • N: 90, S: -90, E: 180, W: -180

Spatial Resolution:
  • .25° x .25°
  • 0.25 degree x 0.25 degree
  • 25 km x 25 km
Temporal Coverage:
  • 19 June 2002 to 27 September 2011
Temporal Resolution: 1 day
Parameter(s):
  • Microwave > Brightness Temperature
Platform(s) AQUA
Sensor(s): AMSR-E
Data Format(s):
  • Binary
Version: V1
Data Contributor(s): Kenneth Knowles, Matthew Savoie, Richard Armstrong, Mary Brodzik

Data Citation

As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

Knowles, K., M. Savoie, R. Armstrong, and M. J. Brodzik. 2006. AMSR-E/Aqua Daily Global Quarter-Degree Gridded Brightness Temperatures, Version 1. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: http://dx.doi.org/10.5067/RRR4WWORG070. [Date Accessed].
No technical references available for this data set.
No FAQs or How Tos available for this data set.

Access complete Knowledge Base

Questions? Please contact:
NSIDC User Services
Phone: 1 303 492-6199
Email: nsidc@nsidc.org