Access to data via FTP for this data set will no longer be available after January 31, 2017. The NASA NSIDC DAAC is transitioning to data distribution through HTTPS, which requires users to login with an Earthdata Login username and password. Data will continue to be available free of charge.

Get Data

DOWNLOADING DATA VIA FTP

Data can be downloaded through a Web browser or command line via FTP. When using a Web browser, the FTP link first directs you to an Optional Registration Form that if filled out, will allow you to receive notifications about updates or processing changes related to that specific data set. After completing the Optional Registration Form, the FTP directory becomes available. For additional help downloading data through an FTP client, go to the How to access data using an FTP client support page.

FTP

Data Set ID:
NSIDC-0543

AMSR-E/Aqua Monthly Global Microwave Land Surface Emissivity, Version 1

This data set is a global land emissivity product using passive microwave observations from the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E). The data set complements existing land emissivity products from the Special Sensor Microwave Imager (SSM/I) and Advanced Microwave Sounding Unit (AMSU) by adding land emissivity estimates at two lower frequencies, 6.9 and 10.65 GHz (C- and X-band, respectively). Observations at these low frequencies penetrate deeper into the soil layer. Land surface emissivity estimates for this data set were collected at the following vertically and horizontally polarized (V-pol and H-pol) frequencies: 6.9, 10.65, 18.7, 23.8, 36.5, and 89.0 GHz. Ancillary data used in the analysis, such as surface skin temperature and cloud mask, were obtained from International Satellite Cloud Climatology Project (ISCCP). Atmospheric properties were obtained from TIROS Operational Vertical Sounder (TOVS) observations to determine the small upwelling and downwelling atmospheric emissions as well as the atmospheric transmission. The data set is in monthly format that is extracted from instantaneous emissivity estimates. Data are stored in HDF4 files and are available via FTP.

Geographic Coverage

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

Spatial Resolution:
  • 0.25 deg x 0.25 deg
Temporal Coverage:
  • 1 July 2002 to 30 June 2008
Temporal Resolution: 1 month
Parameter(s):
  • Surface Radiative Properties > Emissivity
Platform(s) AQUA
Sensor(s): AMSR-E
Data Format(s):
  • HDF
Version: V1
Data Contributor(s): Norouzi, H., M. Temimi, W. B. Rossow, and R. Khanbilvardi.

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.

Norouzi, H., M. Temimi, W. B. Rossow, and R. Khanbilvardi. 2013. AMSR-E/Aqua Monthly Global Microwave Land Surface Emissivity, 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/SFBY6Q6JYS3L. [Date Accessed].

Literature Citation

As a condition of using these data, we request that you acknowledge the author(s) of this data set by referencing the following peer-reviewed publication.

  • Norouzi, H., M. Temimi, W. B. Rossow, R. Khanbilvardi, C. Pearl, and M. Azarderakhsh. 2011. The Sensitivity of Land Emissivity Estimates from AMSR-E at C- and X-Bands to Surface Properties, Journal of Hydrology, Earth Systems Science. . 3577-3589. http://dx.doi.org/10.5194/hess-15-3577-2011

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