Browsing by Author "Pankajakshan, T."
Now showing items 1-20 of 47
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A cold pool south of Indo-Sri Lanka channel and its intrus on into the southeastern Arabian Sea during winter
Rao, R.R.; GirishKumar, M.S.; Ravichandran, M.; Gopalakrishna, V.V.; Pankajakshan, T. (Elsevier, 2008)During winter, south of the Indo-Sri Lanka Channel (ISLC), the observed sea-surface temperature (SST) distribution shows a distinct mini-cold pool (MCP) with relatively cooler waters (SST is less than 28 degrees C). All ... -
A quality control procedure for seawater temperature data
Ghosh, A.K.; Pankajakshan, T. (Indian Society for Physical Sciences of the Oceans, 1992)A three level quality check has been developed for seawater temperature data. The standards used in the procedure for the quality check are the characteristic property of vertical temperature distribution, watermass property ... -
A quality-control procedure for surface temperature and surface layer inversion in the XBT data archive from the Indian Ocean
Pankajakshan, T.; Ghosh, A.K.; Pattanaik, J.; Ratnakaran, L. (American Meteorological Society, 1999)A quality control procedure has been developed and validated for Expendable Bathythermograph (XBT) data from Indian Ocean archieved at Indian Oceanographic Data Centre (IODC). Two possible sources of errors are considered ... -
A statistical method to get surface level air-temperature from satellite observations of precipitable water
Pankajakshan, T.; Shikauchi, A.; Sugimori, Y.; Kubota, M. (Oceanographic Society, Japan, 1993) -
Accuracy of surface heat fluxes from observations of operational satellites
Pankajakshan, T.; Sugimori, Y. (Tata McGraw-Hill, New Delhi, India, 1995)Uncertainties in the flux estimates, resulting from the use of bulk method and remotely sensed data are worked out and are presented for individual and total fluxes. These uncertainties in satellite derived fluxes are ... -
Advective surface velocity in the north west Pacific derived from NOAA AVHRR images
Pankajakshan, T.; Akiyama, M.; Okada, Y.; Sugimori, Y. (PORSEC Committee, Shimizu, Japan, 1992)Using sequential AVHRR images in November 1983, nearsurface advective velocities are derived in the region Kuroshio south of Japan. For deriving the velocities two methods are used. One is the Method of Cross Correlation ... -
Air sea exchange of fluxes and Indian monsoon from satellite data
Muraleedharan, P.M.; Pankajakshan, T.; Sundaram, S. (PORSEC 2002 Secretariat; Bogor; Indonesia, 2002)Latent heat flux (LHF) over the tropical Indian Ocean (25 N to 25 S: 35 degrees E to 120 degrees E) for ten years from 1988 were computed using bulk parameterization method by making use of both monthly and weekly values ... -
An evaluation of XBT depth equations for the Indian Ocean
Pankajakshan, T.; Ghosh, A.K.; Muraleedharan, P.M. (Pergamon, 1998)For the purpose of finding XBT depth equations applicable to the entire Indian Ocean experiments were carried out through the collection of controlled XBT-CTD data on four cruises. These experiments were conducted in various ... -
An interactive graphical system of XBT data quality control and visualization
Pankajakshan, T.; Ghosh, A.K.; Sarupria, J.S.; Gopalakrishna, V.V. (Pergamon, 2001)A PC-based system has been developed for quality control and visualization of expendable bathy thermograph (XBT) data archived at the Indian Oceanographic Data Centre. The system, coded in Visual C++, is user interactive ... -
An interactive software package for validating satellite data
Muraleedharan, P.M.; Pankajakshan, T. (Universidad de Concepcion, 2004)Earth observation satellite launched in the last three decades have made vital contributions to the understanding of the planet. The earth system consisting of land, oceans and atmosphere is linked together by a number of ... -
Are the older ARGO-Floats more vulnerable to Fouling and Associated Salinity drift compared to that of later deployments?
Pankajakshan, T.; Youn, Y.H.; Lee, H. (Kochi: School of Naval Oceanology and Meteorology, Southern Naval Command, 2004)Continued existence of ARGO floats for years together (4 year) make the conductivity cell more vulnerable to fouling and associated drift in salinity measurements In this paper, the authors address this issue by making use ... -
Do cold, low salinity waters pass through the Indo-Sri Lanka Channel during winter?
Rao, R.R.; Girishkumar, M.S.; Ravichandran, M.; Gopalakrishna, V.V.; Pankajakshan, T. (Taylor and Francis, 2011)During winter, along the east coast of India, the near-surface flow is characterized by the southward-flowing East India Coastal Current (EICC) which bends around Sri Lanka and enters into the south-eastern Arabian Sea ... -
Do cold, low salinity waters pass through the Indo-Sri Lanka Channel during winter?
Rao, R.R.; Girishkumar, M.S.; Ravichandran, M.; Gopalakrishna, V.V.; Pankajakshan, T. (Taylor & Francis, 2011)During winter, along the east coast of India, the near-surface flow is characterized by the southward-flowing East India Coastal Current (EICC) which bends around Sri Lanka and enters into the south-eastern Arabian Sea ... -
Drift in salinity data from Argo profiling floats in the Sea of Japan
Pankajakshan, T.; Bajish, C.C.; Behera, S.; Gopalakrishna, V.V. (American Meteorological Society, 2012)In drift analysis of salinity sensors, one major problem is the difficulty in delineating sensor drift from water mass changes. In the present study, a new method is proposed for finding sensor drift that is free from water ... -
How consistent is the satellite derived SST-LHF relationship in comparison with observed values ?
Muraleedharan, P.M.; Pankajakshan, T. (Taylor & Francis, 2008)Time series data for sea surface temperature (moored buoy), wind speed, air temperature, sea level pressure, relative humidity, short wave radiation and rainfall were collected close to the Lakshadweep islands for five ... -
Inter-annual variability of sea surface temperature, wind speed and sea surface height anomaly over the tropical Indian Ocean
Muraleedharan, P.M.; Pankajakshan, T.; Sathe, P.V. (NIO, Dona Paula, Goa (India), 2000)Being land-locked at the north, the Indian Ocean and its surrounding atmosphere behave in such a way that the ocean-atmosphere interaction over this domain is different from that over the other oceans, exhibiting a peculiar ... -
Interannual variability of Kelvin wave propagation in the wave guides of the equatorial Indian Ocean, the coastal Bay of Bengal and the southeastern Arabian Sea during 1993-2006
Rao, R.R.; GirishKumar, M.S.; Ravichandran, M.; Rao, A.R.; Gopalakrishna, V.V.; Pankajakshan, T. (Elsevier, 2010)The observed variability of the Kelvin waves and their propagation in the equatorial wave guide of the Indian Ocean and in the coastal wave guides of the Bay of Bengal (BoB) and the southeastern Arabian Sea (AS) on seasonal ... -
Intrusion of Bay of Bengal water into Arabian Sea along the West coast of India during northeast monsoon
Pankajakshan, T.; RamaRaju, D.V. (Goa: National Inst of Oceanography, 1987) -
Mixed layer heat budget of Kuroshio-Tango Triangle using satellite and ship observations
Pankajakshan, T.; Akiyama, M.; Sugimori, Y.; Wuwa, J.; Okada, Y.; Siripong, A. (PORSEC Committee, Shimizu, Japan, 1992)Using a three dimensional heat flux model, variation of heat storage in the mixed layer of a triangular oceanic area, embedded in the Kuroshio has been studied for a period of a few days in the month of November, 1983. For ... -
Monsoon oscillations of the Findlater Jet and coastal winds of India
Pankajakshan, T.; Zhao, C.; Muraleedharan, P.M.; Rao, G.S.P.; Sugimori, Y. (PORSEC 2002 Secretariat; Bogor; Indonesia, 2002)Intraseasonal variability (ISV) of the Low Level Jet (LLJ) and its effects on coastal winds during the Indian summer monsoon are examined using National Centre for Environmental Prediction / National Centre for Atmospheric ...