On radar signatures of upwelling

ALPERS Werner; ZENG Kan

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On radar signatures of upwelling
On radar signatures of upwelling
2020年24卷第S1期页码：89-94
收稿：2019-10-21，

录用：2020-04-16，

纸质出版：2020-06-07
DOI：
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On radar signatures of upwelling[J]. 遥感学报, 2020,24(S1):89-94. DOI：

Alpers W and Zeng K. 2020. On radar signatures of upwelling. Journal of Remote Sensing(Chinese). 24(S1): 89-94 DOI：

摘要

Abstract

In studies of upwelling

usually data from infrared and optical sensors are used which provide information on the Sea Surface Temperature (SST) and the Chlorophyll-a (Chl-a) concentration. In this paper

we show that also Synthetic Aperture Radars (SAR) images can give valuable contribution to such studies. Upwelling regions become detectable by SAR because they are associated with a reduction of the radar backscatter due to (1) the change of the stability of the air-sea interface (2) the presence of biogenic slicks. Furthermore

the boundary of upwelling regions consists of a line of increased radar backscatter due to the presence of convergent surface flow.

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Keywords

references

Alpers W , Brandt P , Lazar A , Dagorne D , Sow B , Faye S , Hansen W , Rubino A , Poulain P-M and Brehmer P A 2013 . Small-scale oceanic eddy off the coast of West Africa studied by multi-sensor satellite and surface drifter data . Remote Sensing of Environment , 129 : 132 - 143 , doi: 10.1016/j.rse.2012.10.032 http://dx.doi.org/10.1016/j.rse.2012.10.032 .

Alpers W , Espedal H 2014 . Oils and Surfactants, Chapter 11 in Synthetic Aperture Radar Marine User's Manual, JacksonC R, ApelJ R, editors, National Oceanic and Atmospheric Administration, Center for Satellite Application and Research, NOAA/NESDIS, WashingtonD.C., USA, ISBN 0 - 16 - 073214 -X : 263 - 275 , available online : http://www.sarusersmanual.com http://www.sarusersmanual.com .

Alpers W and Hennings I 1984 . A theory of the imaging mechanism of underwater bottom topography by real and synthetic aperture radar . Journal of Geophysical Research , 89 : 10529 - 10546 .

Alpers W , Holt B and Zeng K 2017 . Oil spill detection by imaging radars: Challenges and pitfalls . Remote Sensing of Environment , 20 : 133 - 147 , doi: 10.1016/j.rse.2017.09.002 http://dx.doi.org/10.1016/j.rse.2017.09.002 .

Boebel O , Rossby T , Lutjeharms J R E , Zenk W and Barron C 2003 . Path and variability of the Agulhas Return Current . Deep-Sea Research, II , 50 : 35 - 56 .

Clemente-Colon P 2014 . Upwelling . Chapter in Synthetic Aperture Radar Marine User's Manual, JacksonC R, ApelJ R, editors, National Oceanic and Atmospheric Administration, Center for Satellite Application and Research, NOAA/NESDIS ,WashingtonD.C., USA, ISBN 0 - 16 - 073214 -X: 221 - 244 , available online : http://www.sarusersmanual.com http://www.sarusersmanual.com .

Flament P , Armi L and Washburn L 1985 . The evolving structure of an upwelling filament . Journal of Geophysical Research , 90 ( 11 ): 765 – 11778 .

Hoesen E , Moeller J , Jochumsen K and Quadfasel D 2016 . Scales and properties of cold filaments in the Benguela upwelling system off Luederitz . Journal of Geophysical Research (Oceans) , 121 : 1896 - 1913 , doi: 10.1002/2015JC01141 http://dx.doi.org/10.1002/2015JC01141 .

Hsu M K , Mitnik L M and Liu C T 1995 . Upwelling area northeast of Taiwan on ERS-1 SAR images . Acta Oceanographica Taiwanica , 34 : 27 - 38 , doi: 10.1029/2008JC005018.B http://dx.doi.org/10.1029/2008JC005018.B .

Keller W C , Wismann V and Alpers W 1989 . Tower-based measurements of the ocean C-band radar backscattering cross section . Journal of Geophysical Research , 94 : 924 - 930 , doi: 10.1029/JC094iC01p00 http://dx.doi.org/10.1029/JC094iC01p00 .

Lutjeharms J R E and van Ballegooyen R C 1988 . The Retroflection of the Agulhas Current . Journal of Geophysical Research , 18 ( 11 ): 1570 - 1583 .

Quartly G D and Srokosz M A 1993 . Seasonal variations in the region of the Agulhas Retroflection: Studies with Geosat and FRAM . Journal of Geophysical Research , 23 : 2107 - 212 .

Su J and Pohlmann T 2009 . Wind and topography influence on an upwelling system at the eastern Hainan coast . Journal of Geophysical Research , 114 , C06017 .

Su J , Wang J , Pohlmann T and Xu D 2011 . The influence of meteorological variation on the upwelling system off eastern Hainan during summer 2007 – 2008 . Ocean Dynamics , 61 ( 6 ): 717 - 730 , doi: 10.1007/s10236-011-0404-9 http://dx.doi.org/10.1007/s10236-011-0404-9 .

Tang D L , Kester D R , Ni L-H , Kawamura H , Hong H-S 2002 . Upwelling in the Taiwan Strait during the Summer Monsoon detected by satellite and shipboard measurements . Remote Sensing of Environment , 83 ( 3 ): 457 - 471 , DOI: 10.1016/S0034-4257(02)00062-7 http://dx.doi.org/10.1016/S0034-4257(02)00062-7 .

Valenzuela G R 1978 . Theories for the interaction of electromagnetic and oceanic waves-A review . Boundary Layer Meteorology , 13 : 61 - 85 .

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