A global study of diurnal warming using satellite-derived sea surface temperature
A global study of diurnal warming using satellite-derived sea surface temperature
Ten years of global infrared satellite data from National Oceanic and Atmospheric Administration's advanced very high resolution radiometer are analyzed to investigate global variations of diurnal warming. Daily nighttime sea surface temperatures (SSTs) are subtracted from adjacent daytime SSTs to give an estimate of diurnal warming (?Tday-night). The results reveal large regions in the tropics and midlatitudes that are frequently susceptible to diurnal warming each year. A strong seasonal pattern exists, dictated by the wind and solar insolation variability. A simple ?T regression model confirms that the observed warming is consistent with the right meteorological conditions of low winds and high insolation. The analysis also reveals how the spatial distribution and magnitude of ?T varies with the drift of the satellite orbit as it shifts from a local overpass time of 1400 to 1600. The results highlight the importance of the diurnal cycle for SST measurements and suggest the need for the diurnal cycle to be included in numerical models.
diurnal warming, sea surface temperature, satellite remote sensing, AVHRR, air-sea interaction
3155-[16pp}
Stuart-Menteth, Alice C.
484a384a-2053-42bf-85a3-c4cf9d174d8a
Robinson, Ian S.
548399f7-f9eb-41ea-a28d-a248d3011edc
Challenor, Peter G.
a7e71e56-8391-442c-b140-6e4b90c33547
May 2003
Stuart-Menteth, Alice C.
484a384a-2053-42bf-85a3-c4cf9d174d8a
Robinson, Ian S.
548399f7-f9eb-41ea-a28d-a248d3011edc
Challenor, Peter G.
a7e71e56-8391-442c-b140-6e4b90c33547
Stuart-Menteth, Alice C., Robinson, Ian S. and Challenor, Peter G.
(2003)
A global study of diurnal warming using satellite-derived sea surface temperature.
Journal of Geophysical Research, 108 (C5), .
(doi:10.1029/2002JC001534).
Abstract
Ten years of global infrared satellite data from National Oceanic and Atmospheric Administration's advanced very high resolution radiometer are analyzed to investigate global variations of diurnal warming. Daily nighttime sea surface temperatures (SSTs) are subtracted from adjacent daytime SSTs to give an estimate of diurnal warming (?Tday-night). The results reveal large regions in the tropics and midlatitudes that are frequently susceptible to diurnal warming each year. A strong seasonal pattern exists, dictated by the wind and solar insolation variability. A simple ?T regression model confirms that the observed warming is consistent with the right meteorological conditions of low winds and high insolation. The analysis also reveals how the spatial distribution and magnitude of ?T varies with the drift of the satellite orbit as it shifts from a local overpass time of 1400 to 1600. The results highlight the importance of the diurnal cycle for SST measurements and suggest the need for the diurnal cycle to be included in numerical models.
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Published date: May 2003
Keywords:
diurnal warming, sea surface temperature, satellite remote sensing, AVHRR, air-sea interaction
Identifiers
Local EPrints ID: 1308
URI: http://eprints.soton.ac.uk/id/eprint/1308
ISSN: 0148-0227
PURE UUID: 43415429-8e41-4878-bff8-699ad150911d
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Date deposited: 16 Apr 2004
Last modified: 15 Mar 2024 04:43
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Author:
Alice C. Stuart-Menteth
Author:
Peter G. Challenor
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