Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2011, Vol. 8, No. 4, pp. 274-282
Analysis of inter-annual trends of sea surface temperature and chlorophyll concentration in the Atlantic Ocean from satellite data
S.V. Sheberstov
, O.V. Kopelevich
, E.A. Lukyanova
Shirshov Institute of Oceanology RAS (IORAS), Nakhimovsky Prospect, 36, Moscow 117997 Russia
A goal of the studies performed is a correct assessment of inter-annual trends of sea surface temperature (SST) and chlorophyll concentration (ChL) in different climatic zones of the Atlantic Ocean from 60°S to 60°N from satellite data. Effect of the data losses due to cloudiness and for other reason (that is most considerable in the latitudes of 40-60°) is studied; the possibilities of taking into account of the above mentioned losses are analyzed. Various approaches to the problem are applied: use of data from a microwave radiometer AMSR-E which are not influenced by cloudiness; use of data on cloud coverage; calculation of spatial distributions with different spatial averaging. The averaging with enhanced size of bins has a positive effect reducing the data losses; such an approach can be applied both to SST and Chl data. The global trends have been estimated by different methods for SST, Chl and the cloud coverage; the obtained results are given with the estimated errors.
Keywords: satellite data, sea surface temperature, chlorophyll, Atlantic Ocean, seasonal changes, inter-annual trend, effect of data losses
Full textReferences:
- Vityazev V.V., Spektral'no-korrelyatsionnyi analiz ravnomernykh vremennykh ryadov (Spectral-correlation analysis of uniform time series), Izdatel'stvo S.-Peterburgskogo universiteta, 2001.
- Golyandina N.E., Metod “Gusenitsa” - SSA: analiz vremennykh ryadov (The method of “Caterpillar” - SSA: a time series analysis), Izdatel'stvo S.-Peterburgskogo universiteta, 2004.
- Kopelevich O.V., Sheberstov S.V., Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2010, Vol. 7, No. 1, pp. 238-247.