Cart (Loading....) | Create Account
Close category search window
 

Retrieval of snow water equivalent over boreal forest in Canada from passive microwave measurements using the HUT snow emission model

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Roy, V. ; CARTEL, Sherbrooke Univ., Que., Canada ; Goita, K. ; Royer, A. ; Walker, A.E.
more authors

The objective of this research is to validate the Helsinki University of Technology (HUT) snow emission model and evaluate it's efficiency for snow water equivalent (SWE) estimation in a Canadian boreal forest environment. The model validation over the BOREAS study area shows a correlation (R2≥0.4) between the errors in the simulated brightness temperatures and the snow grain size, which controls the snow cover extinction behavior in the HUT model. Therefore, we propose a different empirical relationship for the extinction coefficient of the snow cover for the environment considered. Better predictions of brightness temperatures at 18 and 37 GHz in both polarizations were obtained using this relation. The accuracy of SWE estimated by inverse modeling based on minimization techniques was also improved, with a mean retrieval error on SWE of less than 15 mm and negligible bias. In comparison, conventional empirical algorithms, based on brightness temperature gradients, tend to underestimate SWE in boreal conditions with a mean retrieval error in the order of 20 to 30 mm.

Published in:

Geoscience and Remote Sensing Symposium, 2002. IGARSS '02. 2002 IEEE International  (Volume:1 )

Date of Conference:

2002

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.