Modeling soil moisture using passive remote sensing

Vishwas V. Soman; William L. Crosson; Charles A. Laymon

doi:10.1117/12.298138

30 December 1997 Modeling soil moisture using passive remote sensing

Vishwas V. Soman, William L. Crosson, Charles A. Laymon

Proceedings Volume 3222, Earth Surface Remote Sensing; (1997) https://doi.org/10.1117/12.298138
Event: Aerospace Remote Sensing '97, 1997, London, United Kingdom

Abstract

Soil moisture is an important component of analysis in many Earth science and related disciplines. Information about the entire profile can find a wide range of applications in many disciplines. Hydrological models can simulate soil moisture profiles, but there is usually limited subsurface information to constrain the models. Emerging science and technology to measure soil moisture with remote sensing offers a potential source of additional information from which to constrain soil hydrology models. Because passive remote sensing can provide soil moisture information for a thin surface layer of soil, the question becomes one of how to use this information to improve estimates of the soil moisture profile. This study attempts to shed light on this question by using a simple hydrology model (SHM) and with data collected during a microwave remote sensing experiment in Huntsville, Alabama during July 1996 (Huntsville '96). This study shows how the errors in the estimation of soil moisture increase as the sampling interval of meteorological data increases. The root mean square error (RMSE) from the baseline almost triples (i.e. from 0.0352 to 0.0810), as the sampling interval is increased from 6 hr to 12 hr. These errors can be reduced by half if we periodically update the modeled soil moisture estimates with a method that assimilates microwave remote sensing soil moisture estimates with the SHM soil moisture profile. Thus, this study attempts to extend the soil moisture information on the surface layer by microwave remote sensing to the entire profile using SHM.

Citation Download Citation

Vishwas V. Soman, William L. Crosson, and Charles A. Laymon "Modeling soil moisture using passive remote sensing", Proc. SPIE 3222, Earth Surface Remote Sensing, (30 December 1997); https://doi.org/10.1117/12.298138

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available