On Radar Signatures of Upwelling
In studies of upwelling, usually data from infrared and optical sensors is used which provides 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...
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Surveying and Mapping Press
2021-03-01
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| Series: | Journal of Geodesy and Geoinformation Science |
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| Online Access: | http://jggs.sinomaps.com/fileup/2096-5990/PDF/1617703722530-509869466.pdf |
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doaj-9fcdf6b2c951451ca080cd1115ab8cdf2021-04-07T00:41:04ZengSurveying and Mapping PressJournal of Geodesy and Geoinformation Science2096-59902021-03-0141172310.11947/j.JGGS.2021.0102On Radar Signatures of UpwellingWerner ALPERS,Kan ZENG01. Institute of Oceanography, University of Hamburg, Hamburg 20146, Germany;2. Ocean Remote Sensing Institute, Ocean University of China, Qingdao 266003, ChinaIn studies of upwelling, usually data from infrared and optical sensors is used which provides 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 or/and 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.http://jggs.sinomaps.com/fileup/2096-5990/PDF/1617703722530-509869466.pdf|upwelling|synthetic aperture radar|cyclonic eddies|agulhas return current|biogenic surface films|chlorophyll concentration|air-sea interface|sea surface temperature |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Werner ALPERS,Kan ZENG |
| spellingShingle |
Werner ALPERS,Kan ZENG On Radar Signatures of Upwelling Journal of Geodesy and Geoinformation Science |upwelling|synthetic aperture radar|cyclonic eddies|agulhas return current|biogenic surface films|chlorophyll concentration|air-sea interface|sea surface temperature |
| author_facet |
Werner ALPERS,Kan ZENG |
| author_sort |
Werner ALPERS,Kan ZENG |
| title |
On Radar Signatures of Upwelling |
| title_short |
On Radar Signatures of Upwelling |
| title_full |
On Radar Signatures of Upwelling |
| title_fullStr |
On Radar Signatures of Upwelling |
| title_full_unstemmed |
On Radar Signatures of Upwelling |
| title_sort |
on radar signatures of upwelling |
| publisher |
Surveying and Mapping Press |
| series |
Journal of Geodesy and Geoinformation Science |
| issn |
2096-5990 |
| publishDate |
2021-03-01 |
| description |
In studies of upwelling, usually data from infrared and optical sensors is used which provides 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 or/and 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. |
| topic |
|upwelling|synthetic aperture radar|cyclonic eddies|agulhas return current|biogenic surface films|chlorophyll concentration|air-sea interface|sea surface temperature |
| url |
http://jggs.sinomaps.com/fileup/2096-5990/PDF/1617703722530-509869466.pdf |
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AT werneralperskanzeng onradarsignaturesofupwelling |
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