Combining day- and nighttime SMMR observations for improved temporal resolution of surface parameter retrievals

Manfred Owe; Richard A. M. De Jeu

doi:10.1117/12.513907

24 February 2004 Combining day- and nighttime SMMR observations for improved temporal resolution of surface parameter retrievals

Manfred Owe, Richard A. M. De Jeu

Author Affiliations +

Proceedings Volume 5232, Remote Sensing for Agriculture, Ecosystems, and Hydrology V; (2004) https://doi.org/10.1117/12.513907
Event: Remote Sensing, 2003, Barcelona, Spain

Abstract

The Scanning Multichannel Microwave Radiometer (SMMR) provides ground coverage on the average of two times per week during the day and two times per week during the night. However, past problems associated with surface soil temperature estimation have resulted in both systematic and random differences between various applications utilizing both daytime and nighttime observations. This was especially true for SMMR-based soil moisture retrievals. Significant offsets were frequently observed, which prevented the daytime and nighttime soil moisture data from being combined into a single data set. This leaves one with a time series of data with very poor temporal resolution, and limits its usefulness for other applications. Improvements in surface temperature estimation have reduced the differences between day and night estimates significantly. The improved consistency between the two data sets now permits combining them into one, making the data more useful, especially for other land surface processes applications.

Citation Download Citation

Manfred Owe and Richard A. M. De Jeu "Combining day- and nighttime SMMR observations for improved temporal resolution of surface parameter retrievals", Proc. SPIE 5232, Remote Sensing for Agriculture, Ecosystems, and Hydrology V, (24 February 2004); https://doi.org/10.1117/12.513907

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