Now showing items 1-20 of 29

    • 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 new atlas of temperature and salinity for the North Indian Ocean 

      Chatterjee, A.; Shankar, D.; Shenoi, S.S.C.; Reddy, G.V.; Michael, G.S.; Ravichandran, M.; Gopalakrishna, V.V.; Rao, E.P.R.; UdayaBhaskar, T.V.S.; Sanjeevan, V.N. (Indian Academy of Sciences, 2012)
      The most used temperature and salinity climatology for the world ocean, including the Indian Ocean, is the World Ocean Atlas (WOA) because of the vast amount of data used in its preparation. The WOA climatology does not, ...
    • A reduction in marine primary productivity driven by rapid warming over the tropical Indian Ocean 

      Roxy, M.K.; Modi, A.; Murtugudde, R.; Valsala, V.; Panickal, S.; PrasannaKumar, S.; Ravichandran, M.; Vichi, M.; Levy, M. (American Geophysical Union, 2016)
      Among the tropical oceans, the western Indian Ocean hosts one of the largest concentrations of marine phytoplankton blooms in summer. Interestingly, this is also the region with the largest warming trend in sea surface ...
    • A roadmap to IndOOS-2: Better observations of the rapidly-warming Indian Ocean 

      Beal, L.M.; Vialard, J.; Roxy, M.K.; Li, J.; Andres, M.; Annamalai, H.; Feng, M.; Han, W.; Hood, R.; Lee, T.; Lengaigne, M.; Lumpkin, R.; Masumoto, Y.; McPhaden, M.J.; Ravichandran, M.; Shinoda, T.; Sloyan, B.M.; Strutton, P.G.; Subramanian, A.C.; Tozuka, T.; Ummenhofer, C.C.; Unnikrishnan, A.S.; Wiggert, J.; Yu, L.; Cheng, L.; Desbruyeres, D.G.; Parvathi, V. (American Meteorological Society, 2020)
      The Indian Ocean Observing System (IndOOS), established in 2006, is a multinational network of sustained oceanic measurements that underpin understanding and forecasting of weather and climate for the Indian Ocean region ...
    • A sustained ocean observing system in the indian ocean for climate related scientific knowledge and societal needs 

      Hermes, J.C.; Masumoto, Y.; Beal, L.M.; Roxy, M.K.; Vialard, J.; Andres, M.; Annamalai, H.; Behera, S.; DeAdamo, N.; Doi, T.; Feng, M.; Han, W.; Hardman-Mountford, N.; Hendon, H.; Hood, R.; Kido, S.; Lee, C.; Lee, T.; Lengaigne, M.; Li, J.; Lumpkin, R.; Navaneeth, K.N.; Milligan, B.; McPhaden, M.J.; Ravichandran, M.; Shinoda, T.; Singh, A.; Sloyan, B.; Strutton, P.G.; Subramanian, A.C.; Thurston, S.; Tozuka, T.; Ummenhofer, C.C.; Unnikrishnan, A.S.; Venkatesan, R.; Wang, D.; Wiggert, J.; Yu, L.; Yu, W. (2019)
      The Indian Ocean is warming faster than any of the global oceans and its climate is uniquely driven by the presence of a landmass at low latitudes, which causes monsoonal winds and reversing currents. The food, water, and ...
    • Autonomous profiling float observations reveal the dynamics of deep biomass distributions in the denitrifying oxygen minimum zone of the Arabian Sea 

      Wojtasiewicz, B.; Trull, T.W.; Bhaskar, T.V.S.U.; Gauns, M.; Prakash, S.; Ravichandran, M.; Shenoy, D.M.; Slawinski, D.; Hardman-Mountford, N.J. (Elsevier B.V., 2020)
      Data from 13 autonomous profiling BGC-Argo floats, equipped with biogeochemical and bio-optical sensors deployed between 2011 and 2016, were used to explore the potential of bio-optical methods to map deep biomass distribution ...
    • BOBMEX: The Bay of Bengal Monsoon Experiment 

      Bhat, G.S.; Gadgil, S.; Kumar, P.V.H.; Kalsi, S.R.; Madhusoodanan, P.; Murty, V.S.N.; Rao, C.V.K.P.; RameshBabu, V.; Rao, L.V.G.; Rao, R.R.; Ravichandran, M.; Reddy, K.G.; Rao, P.Sanjeeva; Sengupta, D.; Sikka, D.R.; Swain, J.; Vinayachandran, P.N. (American Meteorological Society, 2001)
      The first observational experiment under the Indian Climate Research Programme, called the Bay of Bengal Monsoon Experiment (BOBMEX), was carried out during July-August 1999. BOBMEX was aimed at measurements of important ...
    • 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 ...
    • Does sea level pressure modulate the dynamic and thermodynamic forcing in the tropical Indian Ocean? 

      Nisha, P.G.; Muraleedharan, P.M.; Keerthi, M.G.; Sathe, P.V.; Ravichandran, M. (Taylor & Francis, 2012)
      Three areas, the north Indian Ocean (NIO), the equatorial Indian Ocean (EIO) and the south Indian Ocean (SIO), were chosen over the tropical Indian Ocean to investigate the dependency of sea surface temperature (SST), wind ...
    • High-resolution Operational Ocean Forecast and reanalysis System for the Indian Ocean 

      Francis, P.A.; Jithin, A.K.; Effy, J.B.; Chatterjee, Abhisek; Chakraborty, Kunal; Paul, A.; Balaji, B.; Shenoi, S.S.C.; Biswamoy, P.; Mukherjee, Arnab; Singh, Prerna; Deepsankar, B.; Reddy, S.S.; Vinayachandran, P.N.; GirishKumar, M.S.; Bhaskar, T.V.S.U.; Ravichandran, M.; Unnikrishnan, A.S.; Shankar, D.; Amol, P.; Aparna, S.G.; Harikumar, R.; Kaviyazhaku, K.; Suprit, K.; Shesu, R.V.; KiranKumar, N.; Rao, N.S.; Annapurnaiah, K.; Venkatesan, R.; Rao, A.S.; Rajagopal, E.N.; Prasad, V.S.; Gupta, M.D.; Nair, T.M.B.; Rao, E.P.R.; Satyanarayana, B.V. (American Meteorological Society, 2020)
      A good understanding of the general circulation features of the oceans, particularly of the coastal waters, and ability to predict the key oceanographic parameters with good accuracy and sufficient lead time are necessary ...
    • Increased cyclone destruction potential in the Southern Indian Ocean 

      Vidya, P.J.; Ravichandran, M.; Murtugudde, R.; Subeesh, M.P.; Chatterjee, S.; Neetu, S.; Nuncio, M. (IOP Publishing, 2020)
      The present study examines the role of the Southern Indian Ocean (SIO) warming on the cyclone destruction potential or Power Dissipation Index (PDI) during two contrasting periods of 1980-1998 and 1999-2016. The PDI in the ...
    • Indian Moorings: Deep-sea current meter moorings in the Eastern Equatorial Indian Ocean 

      Murty, V.S.N.; Sarma, M.S.S.; Suryanarayana, A.; Sengupta, D.; Unnikrishnan, A.S.; Fernando, V.; Almeida, A.M.; Khalap, S.; Sardar, A.A.; Somasundar, K.; Ravichandran, M. (CLIVAR, 2006)
    • Intensification of Arabian Sea cyclone genesis potential and its association with Warm Arctic Cold Eurasia pattern 

      Vidya, P.J.; Chatterjee, Sourav; Ravichandran, M.; Gautham, S.; Nuncio, M.; Murtugudde, R. (Nature Publishing Group, 2023)
      The present study examines the drivers of the observed increasing trend in the Genesis Potential Index (GPI) of the post-monsoon season (October-November-December) tropical cyclones in the Arabian Sea (AS) during the period, ...
    • 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 ...
    • Investigation of XBT and XCTD biases in the Arabian Sea and the Bay of Bengal with implications for climate studies 

      Boyer, T.; Gopalakrishna, V.V.; Reseghetti, F.; Naik, A.; Suneel, V.; Ravichandran, M.; Ali, N.P.M.; Rafeeq, M.M.M.; Chico, R.A. (American Meteorological Society, 2011)
      Long time series of XBT data in the Bay of Bengal and the Arabian Sea are valuable datasets for exploring and understanding climate variability. However, such studies of interannual and longer-scale variability of temperature ...
    • Late Quaternary Sedimentation and Slope Failure Events on the Costa Rican Margin 

      Nath, B.N.; Yatheesh, V.; Yazing, A.K.; Prabhu, S.R.; Borker, A.; Pandey, D.K.; KameshRaju, K.A. (Springer, Cham, 2020)
      The Costa Rican margin is an erosional convergent margin formed by subduction of the Cocos Plate under the Caribbean Plate along the Middle America Trench. The Integrated Ocean Drilling Program (IODP) Expedition 334 was ...
    • Modern Radiolarians Recovered from the Mudline Samples at IODP-341 Sites in the South Alaska Basin, North East Pacific Ocean 

      Gupta, S.M. (Springer, Cham, 2020)
      The Integrated Ocean Drilling Program (IODP) Expedition 341 drilled the 5 sites (U1417-U1421) across the Surveyor channel near the Aleutian trench in the Gulf of Alaska to study the sedimentation during middle Miocene to ...
    • Observed anomalous upwelling in the Lakshadweep Sea during the summer monsoon season of 2005 

      Gopalakrishna, V.V.; Rao, R.R.; Nisha, K.; GirishKumar, M.S.; Pankajakshan, T.; Ravichandran, M.; Johnson, Z.; Girish, K.; Aneeshkumar, N.; Srinath, M.; Rajesh, S.; Rajan, C.K. (American Geophysical Union, 2008)
      Repeat near-fortnightly expendable bathythermograph (XBT) transects made along Kochi-Kavaratti (KK) shipping lane in the Lakshadweep Sea (LS) during 2002–2006 are examined to describe the observed year-to-year variability ...
    • Observed interannual variability of the thermohaline structure in the south eastern Arabian Sea 

      Kurian, N.; Costa, J.; Suneel, V.; Gopalakrishna, V.V.; Rao, R.R.; Girish, K.; Amritash, S.; Ravichandran, M.; John, L.; Ravichandran, C. (Springer, 2011)
      The XBT and sea surface salinity (SSS) measurements systematically carried out at near-fortnightly interval from May 2002 to August 2008 in the South Eastern Arabian Sea (SEAS) are utilised to describe the observed seasonal ...