论文信息 - Observation of mesoscale eddies by using SAR data complemented with optical remote sensing and in situ measurements

Observation of mesoscale eddies by using SAR data complemented with optical remote sensing and in situ measurements

Mesoscale eddies were observed in the Baltic Sea using optical remote sensing, SAR imagery and high resolution in situ measurement from an autonomous system on a passenger ferry. Comparison between SAR data and in situ measurements was carried out to analyze the manifestation of sea surface temperature differences and biological surface slicks on SAR imagery. Correlation between radar backscatter and biological parameters (chlorophyll a and turbidity) was observed. Locations of upwelling related cold eddies and low temperature areas were clearly detectable on radar imagery as well. Therefore, SAR data complemented with in situ measurements enables to observe the evolution of mesoscale eddies in case there is no optical remote sensing data available (i.e.under cloud cover).

Rivo Uiboupin | Jaan Laanemets

[1] Pablo Clemente-Colon,et al. Observations of East Coast upwelling conditions in synthetic aperture radar imagery , 1999, IEEE Trans. Geosci. Remote. Sens..

[2] Fuk K. Li,et al. Air-sea fluxes and surface layer turbulence around a sea surface temperature front , 1991 .

[3] Jaan Laanemets,et al. Modeling of the mesoscale structure of coupled upwelling/downwelling events and the related input of nutrients to the upper mixed layer in the Gulf of Finland, Baltic Sea , 2008 .

[4] R. Uiboupin,et al. Upwelling characteristics derived from satellite sea surface temperature data in the Gulf of Finland, Baltic Sea , 2009 .

[5] B. Håkansson,et al. Distributions of the sea-surface temperature fronts in the Baltic Sea as derived from satellite imagery , 1995 .

[6] H. Siegel,et al. Dynamic features in the western Baltic Sea investigated using NOAA-AVHRR data , 1994 .

[7] M. Ostrowski,et al. Sea surface temperature distribution during upwelling along the Polish Baltic coast , 2005 .

[8] J. Pulliainen,et al. Regional water quality mapping through the assimilation of spaceborne remote sensing data to ship-based transect observations , 2004 .