Diurnal Sea Surface Temperature Warming and Its Impact on Mesoscale Air-Sea Interaction in a Coastal Area

Y. Kawai, H. Kawamura, K. Otsuka

Research output: Contribution to conferencePaper

Abstract

The authors estimated daily sea surface temperature (SST) amplitude over the western Pacific using satellite-derived data only, and revealed that in coastal areas around Japan, large SST warming occurred with particularly high frequency in summer. The authors then investigated air-sea interaction related with the SST warming in Mutsu Bay using a mesoscale air-sea coupled model. The daily SST amplitude can exceed 5 K under a clear and calm condition. Such sea surface warming weakens land-sea temperature contrast. As a result, horizontal negative heat transfer by sea breeze is weakened and air temperature above land near the coast becomes higher by about 1 K than that without air-sea coupling. This result indicates that the large diurnal SST warming can have a non-negligible impact on air temperature prediction in coastal regions.

Original languageEnglish
Pages2257-2259
Number of pages3
Publication statusPublished - 2003
Event2003 IGARSS: Learning From Earth's Shapes and Colours - Toulouse, France
Duration: 2003 Jul 212003 Jul 25

Other

Other2003 IGARSS: Learning From Earth's Shapes and Colours
CountryFrance
CityToulouse
Period03/7/2103/7/25

Keywords

  • Air-sea coupled model
  • Diurnal warming
  • Mesoscaleatmospheric circulation
  • SST

ASJC Scopus subject areas

  • Computer Science Applications
  • Earth and Planetary Sciences(all)

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