Validation of phase transition water content in freeze-thaw process at pixel-scale using field measurements

Author

Zhenguo Hao ; Lixin Zhang ; Lingmei Jiang ; Shaojie Zhao ; Lijiao Xiao

Author_Institution

State Key Lab. of Remote Sensing Sci., Beijing Normal Univ., Beijing, China

fYear

2012

fDate

22-27 July 2012

Firstpage

4485

Lastpage

4488

Abstract

Phase transition water content (PTWC) is an important indicator of the intensity of soil freezing-thawing and is the crucial parameter that influences land surface energy balancing. In this paper, a PTWC retrieval algorithm was used to estimate the PTWC of pixel-scale. Through the field experiment at North China Plain, the actual PTWC is obtained to evaluate the accuracy of inversion. The validation result showed that the algorithm based on AMSR-E can provide reliable values of PTWC in pixel-scale. The RMSE of all sampling points is 0.008v/v.

Keywords

freezing; soil; water; North China Plain; PTWC retrieval algorithm; freeze-thaw process; inversion accuracy; land surface energy balancing; phase transition water content; soil; Classification algorithms; Microwave imaging; Microwave radiometry; Remote sensing; Soil; Soil measurements; Temperature measurement; AMSR-E; phase transition water content; pixel-scale; validation;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International

Conference_Location

Munich

ISSN

2153-6996

Print_ISBN

978-1-4673-1160-1

Electronic_ISBN

2153-6996

Type

conf

DOI

10.1109/IGARSS.2012.6350475

Filename

6350475