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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;SST;Dakshin Gangotri;Meteorology;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
Appears in Collections:IJMS Vol.37(1) [March 2008]

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