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This data set contains satellite-retrieved geophysical parameter files generated from the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) instrument on the National Aeronautics and Space Administration (NASA) Aqua satellite and the Advanced Microwave Scanning Radiometer 2 (AMSR2) sensor on the JAXA GCOM-W1 satellite. The geophysical parameters include daily air surface temperature, fractional open water cover estimates, vegetation optical depth, surface volumetric soil moisture, and atmosphere total column precipitable water vapor. The global retrievals were derived over land for non-precipitating, non-snow, and non-ice covered conditions.
Data Set ID:
NSIDC-0451
Daily Global Land Parameters Derived from AMSR-E and AMSR2, Version 3
This is the most recent version of these data.
Version Summary:
This version update includes the following changes:
- Temporal coverage extended to 31 December 2020
- Precipitable Water Vapor algorithm refined to account for cloud liquid water and surface terrain effects
- Precipitable Water Vapor algorithm improved through calibration against similar AIRX2RET version 6 retrievals
- Refined estimation of Tmx and Tmn considers terrain and latitude effects
- Addition of daily surface atmospheric vapor pressure deficit land parameter derived from AMSR LPDR surface temperature and PWV retrievals
- X-band (10.7 GHz) retrieval improved using weighted averaging and dymanic selection of vegetation scattering albedo effects
- Updated Freeze/Thaw frozen QC flag. In this version, QC flag set for a given date and pixel where frozen condition is detected from either afternoon or morning AMSR observations
BASIC Level of Service
Data: Data integrity verified
Documentation: Key metadata and links to supporting documentation available
User Support: Assistance with data access and basic data usage
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- If you are not currently logged in to Earthdata, you will be prompted to do so.
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Once you have logged in, you will be able to click and download files via a Web browser. There are also options for downloading via a command line or client. For more detailed instructions, please see Options Available for Bulk Downloading Data from HTTPS with Earthdata Login.
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.
Du, J. and J. S. Kimball. 2021. Daily Global Land Parameters Derived from AMSR-E and AMSR2, Version 3. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/WPXUQ72A4484. [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.
Du, J., J. S. Kimball, L. A. Jones, Y. Kim, J. Glassy, and J. D. Watts. 2017. A global satellite environmental data record derived from AMSR-E and AMSR2 microwave earth observations , Earth System Science Data . 9. 791-808. https://doi.org/10.5194/essd-9-791-2017
A user guide is not available for this data set.
How To
Programmatic Access Guide for Data on daacdata.apps
Data from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) can be accessed directly from our HTTPS file system. We provide basic command line Wget and curl instructions for HTTPS file system downloads below. For questions about programmatic access to NSIDC... read more
