Journal of Tropical Oceanography ›› 2012, Vol. 31 ›› Issue (4): 1-7.doi: 10.11978/j.issn.1009-5470.2012.04.001cstr: 32234.14.j.issn.1009-5470.2012.04.001

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Diurnal variation correction of AVHRR SST data for the Northwest Pacific region

TENG Wei-cheng, GUAN Lei   

  1. Ocean Remote Sensing Institute/Department of Marine Technology, College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China
  • Received:2011-01-14 Revised:2011-04-20 Online:2012-10-22 Published:2012-10-24
  • Contact: Ocean Remote Sensing Institute/Department of Marine Technology, College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China

Abstract:

There is a near-surface diurnal warming layer due to the effect of solar heating during the daytime. The diurnal variation is important for studying air-sea interaction and marine ecology, among others. The characteristics of the diurnal variation are different in different regions. In this paper, firstly the empirical and physical models for estimating diurnal warming are introduced. Secondly, the sea surface temperature (SST) from the National Oceanic and Atmospheric Administration (NOAA) Advanced Very High Resolution Radiometer (AVHRR), surface wind speed of Aqua Advanced Microwave Scanning Radiometer for EOS (AMSR-E) and solar radiation in the Northwest Pacific are used to regress the coefficients in an empirical model, which is applied in the diurnal variation correction of NOAA AVHRR SST in the studied area. It shows that, for the correction of AVHRR SST, the mean bias is b0.01℃ and the standard deviation is 0.22℃. The new model can be applied in the diurnal variation correction of the satellite data in the Northwest Pacific.

Key words: sea surface temperature, diurnal warming, Northwest Pacific, NOAA AVHRR, Aqua AMSR-E

CLC Number: 

  • P731.11