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Title: Meteorology of Southern Ocean in Lazarev Sea area as revealed from observations obtained from Indian Antarctic Expeditions
Authors: Lal, R. P.
Keywords: Southern Ocean
Lazarev Sea
latitudinal diurnal variation
Diurnal variation
Air temperature
Dakshin Gangotri
Antarctic expedition
Wind field
Atmospheric pressure
Weather system
Issue Date: Mar-2008
Publisher: CSIR
Abstract: Ship observations taken during voyage through Southern Ocean and observations recorded at Indian Antarctic Station Dakshin Gangotri (DG), have been used to study the latitudinal and diurnal variations of air temperature and sea surface temperature (SST) and climatology of Lazarev Sea area. Air temperature and SST are highly correlated and the SST lags by 1.5 °C during summer and the degree of lag reduces as winter approaches. The meteorological surface observations show an annual mean surface pressure of about 985 hPa. Surface wind is mainly easterly with annual average mean wind speed of 17 Kn. The annual average air temperature is –16.6 °C with a highest average air temperature of –2.5 °C during January and lowest average air temperature of –28.1 °C during August. Highest maximum temperature of 9.9 °C and lowest minimum temperature of –52.0 °C has been reported from coastal station. Diurnal variations of SST and air temperature have been observed in Lazarev sea area. It was not feasible to visualize these variations on moving ship.
Page(s): 93-98
ISSN: 0379-5136
Source:IJMS Vol.37(1) [March 2008]

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