The Hillarys Transect (2): Validation of satellite-derived sea surface temperature in the Indian Ocean off Perth, Western Australia

McAtee, B.; Pearce, Alan; Lynch, M.; Davies, James E.; Boterhoven, M.; Osborne, Brian

doi:10.1016/j.csr.2007.02.001

Cited by 4 publications

(11 citation statements)

References 21 publications

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“…SSST measurements are made using the TASCO radiometer, over an integrating time of 1s, at a zenith angle of 45°, determined using a spirit level attached to the side of the instrument. A measurement of the sky temperature is also made at 45°to be used in the atmospheric correction of the data [2], [7].…”

Section: Methodology and Calibrationmentioning

confidence: 99%

“…The BSST are well known (iO. 15K, [2]), so if the calibration process enhances the quality of the SSST data, the fit between the SSST and BSST data should improve after applying (1) to the raw data. In Fig.…”

Section: -mentioning

confidence: 99%

“…we have conducted an experiment to characterize the operation of the TASCO radiometer over a range of operating temperatures which may be expected during a field campaign [2]. The results from this experiment 0-7803-7031-7/01/$10.00 (C) 2001 IEEE 931 0-7803-7031-7/01/$17.00 (C) 2001 IEEE may be applied retrospectively to the SSST data, provided that the air temperature is also known at the time of each radiometric measurement, as this is assumed to be the operating temperature of the instrument.…”

Section: Howevermentioning

confidence: 99%

“…la and b. Here, the raw and calibrated data are plotted against corresponding bulk sea surface temperature (BSST) measurements acquired from a bucket sample of ocean water using a mercury-in-glass thermometer [2]. Although there is an offset between BSST and SSST, due to the radiative cooling of the skin of the order of 0.5K (a difference of 0.25K has been measured in the tropical Indian Ocean by [8]), changes in BSST should also be reflected in the corresponding measurement of SSST.…”

Section: -mentioning

confidence: 99%

“…It focuses on the calibration of the TASCO radiometer used to acquire radiometric estimates of the sea surface skin temperature (SSST) and describes the seasonal variation in SSST off the coast of Western Australia. It concludes with a brief evaluation of the suitability of the data set for the validation of satellite SSST imagery, A more thorough description of the SST measurement component of the Hillarys Transects in given in [2]. Other elements of the cruise are discussed more fully in associated literature; the general oceanography in [1]; the optical and chlorophyll measurement programs for monitoring nutrients and validating satellite ocean colour imagery in [3] and [4]; numbers and distribution of fish larvae in [5] and [6].…”

Section: Introductionmentioning

confidence: 99%

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The Hillarys Transect sea surface temperature measurement and validation program

McAtee

Lynch

Pearce

IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing

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There has been a heightened interest in sea surface temperature (SST) measurements during the past two decades, particularly on a global scale, due largely to the advent of several El Nino episodes and increasing worldwide concern about global warming.Because of the continuous global measurements of SST that satellites can provide they play a fundamental role in acquiring the data sets necessary for studies of such global processes. However, the satellite data still need to be validated against in-situ measurements in order to assess the accuracy of satellite SST retrieval algorithms.Since 1997 radiometric sea surface skin temperatures have been recorded monthly using a TASCO radiometer along a cross shelf transect extending 40 km offshore from a coastal location north of Perth, Western Australia.This SST measurement program is one component of the Hillarys Transect, an ongoing multidisciplinary oceanographic study which aims to quantify the seasonal variation of physical and biological variables in the coastal Indian Ocean.Validation of satellite SST retrieval algorithms is the primary aim of the SST measurement program component of the Hlllarys Transect, which also aims to develop a data set which captures the seasonal variation of SST off the coast of southern Western Australia.The radiometric SST measurements are made at 9 stations along the transect and each measurement is calibrated using a portable water-filled blackbody unit. Though the study is low budget, the seasonal variation in SST is clearly captured by the data set and good agreement between in-situ and satellite SST estimates are obtained. Calibration of the radiometer will be dkcussed along with the seasonal cycle of SST off the WA coast and the suitability of the instrumentation for validation of remotely sensed SST.

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Section: Methodology and Calibrationmentioning

confidence: 99%

Section: -mentioning

confidence: 99%

Section: Howevermentioning

confidence: 99%

Section: -mentioning

confidence: 99%