Rain effects on ASCAT retrieved winds

Author

Lin, Wenming ; Portabella, Marcos ; Stoffelen, Ad ; Turiel, Antonio ; Verhoef, Anton ; Verspeek, Jeroen ; Ballabrera, Joaquim ; Vogelzang, Jur

Author_Institution

Inst. de Cienc. del Mar (ICM), Barcelona, Spain

fYear

2012

fDate

22-27 July 2012

Firstpage

2801

Lastpage

2804

Abstract

In this study, the rain impact on the ASCAT operational Level 2 retrieved wind quality and the effectiveness of the quality control (QC) are investigated. It is shown that ASCAT is much less affected by direct rain effects, such as ocean splashing, but effects of increased wind variability appear to dominate. The operational QC proves to be effective in screening these artifacts, but at the expense of valuable winds. An image processing method, known as the singularity analysis, is proposed in this study to complement the current QC, and its potential is illustrated.

Keywords

atmospheric techniques; geophysical image processing; rain; wind; ASCAT operational Level 2 retrieved wind quality; direct rain effects; image processing method; increased wind variability; quality control effectiveness; rain impact; singularity analysis; Maximum likelihood estimation; Radar measurements; Rain; Sea surface; Spaceborne radar; Wind; ASCAT; MLE; quality control; rain effects; singularity analysis;

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.2012.6350850

Filename

6350850