Scheherezade - an interdisciplinary study of the Gulf of Oman, Strait of Hormuz and the southern Arabian Gulf, Charles Darwin Cruise 104, 12 Feb-30 Apr 1997. No. 9. Sea surface temperature measurements. Leg 1, 12 Feb - 19 March

Moat, B.I. ORCID: https://orcid.org/0000-0001-8676-7779; Pascal, R.W.; Guymer, T.H.. 1997 Scheherezade - an interdisciplinary study of the Gulf of Oman, Strait of Hormuz and the southern Arabian Gulf, Charles Darwin Cruise 104, 12 Feb-30 Apr 1997. No. 9. Sea surface temperature measurements. Leg 1, 12 Feb - 19 March. Southampton, UK, Southampton Oceanography Centre, 34pp. (Southampton Oceanography Centre Research & Consultancy Report, 18)

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Abstract/Summary

Measurements of sea surface temperature were made by in-water sensors and by infra-red radiometers during CDI04 in the Gulf of Oman, Strait of Hormuz and the southern Arabian Gulf. The in-water sensors were a thermosalinograph and a trailed thermistor (SOAP). Three radiometers were deployed at the bow of the ship to measure the skin temperature: a Satellites International STR 100-1 viewing the sea surface and two Tasco radiometers mounted on the outside of the SIL radiometer case, one viewing the surface at the same angle as the SIL, the other viewing the section of sky which would be reflected by the sea into the field of view of the other radiometers. The latter are required for a more accurate sky correction in determining sea surface temperature. This report presents daily plots of the measurements. Most of the difference between the in-water measurements is attributable to the different depths at which they sample. When steaming the SOAP is within the top 0.5 m dropping to 5 m when on station. On calm, sunny days there is a strong vertical gradient of temperature in the upper few metres. The two skin temperatures measured by the radiometers are in good general agreement. However, it should be borne in mind that the Tasco values have not had a sky correction applied whereas the SIL ones assume an effective sky temperature of 240 K throughout the cruise.

Item Type:	Publication - Report
Date made live:	09 Aug 2013 13:17 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/502934

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