Browsing Centre for Atmospheric and Oceanic Sciences (CAOS) by Title
Now showing items 21-40 of 125
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Comparison of RADIATIVE FLUXES from INSAT and ERBE
Accurate knowledge of radiative fluxes at the top of the atmosphere (TOA) is necessary to study the variability of climate. The Indian geostationary satellite INSAT has been measuring radiative fluxes in a narrow spectral ... -
Data Assimilation Experiments Using An Indian Ocean General Circulation Model
(2008-09-09)Today, ocean modeling is fast developing as a versatile tool for the study of earth’s climate, local marine ecosystems and coastal engineering applications. Though the field of ocean modeling began in the early 1950s along ... -
Diagnostic study of the structure of inter tropical convergence zone in an aquaplanet general circulation model
The Intertropical Convergence Zone (ITCZ) is a narrow region of cloudiness and rainfall that has a predominant east–west orientation. In the present study, the response of the ITCZ to latitudinal variation of the sea surface ... -
Dynamics and Stability of Multiple Jets in Geophysical Flows
(2018-04-18)The effect of rotation on the stability of multiple jets in planetary atmospheres is system- atically investigated. Typically in Jovian planetary atmospheres, multiple zonal jets have been observed and their morphology has ... -
Dynamics of river plumes in the Bay of Bengal
The Bay of Bengal (BoB) receives a large amount of freshwater through runoff from sev- eral rivers along its border. This large freshwater gain has severe implications on the dynamics and thermodynamics of the BoB as ... -
Dynamics of Summer Monsoon Current around Sri Lanka
(2018-05-21)Summer monsoon current (SMC) in the north Indian Ocean (NIO) is an open ocean current that flows eastward and enter into Bay of Bengal (BoB) during southwest monsoon (June–September). South of Sri Lanka, the SMC turns ... -
Effect of Rainfall and River Discharge on the North Indian Ocean
In the north Indian Ocean, the Bay of Bengal (BoB or bay) and the Eastern Arabian Sea (EAS) receive a huge amount of rainfall during summer. Several rivers along their boundaries discharge enormous amounts of freshwater ... -
Effects of aerosols and atmospheric boundary layer dynamics on refractive index fluctuations: implications for Free-Space Optical communication
Laser communication through atmospheric channels is an emerging wireless technology, commonly known as Free-Space Optical (FSO) communication. It facilitates unprecedented channel capacity and very large bandwidth, favouring ... -
Effects of Arctic Geoengineering on Precipitation in the Tropical Monsoon Regions
(2018-06-14)Arctic geoengineering wherein sunlight absorption is reduced only in the Arctic has been suggested as a remedial measure to counteract the on-going rapid climate change in the Arctic. Several modelling studies have shown ... -
Efficacy of Solar irradiance, Methane and Black carbon aerosols
In climate science literature, the concept of radiative forcing is used to infer the equilibrium temperature change that would occur as a result of changes in the forcing agents such as greenhouse gases and aerosols. ... -
Empirical Prediction and Predictability of Dry and Wet Spells of the Indian Summer Monsoon
n active (break) phase of intraseasonal oscillation (ISO) of the Indian summer monsoon is associated with a wet (dry) spell over the monsoon trough region and a dry (wet) spell over the equatorial Indian Ocean. Prediction ... -
Energetics of monsoon variability over the last 22,000 years
The interpretation of proxies of paleo monsoons has been based primarily on changes in incident solar radiation. The role of feedbacks has not been examined in depth. In this thesis, we have used a diagnostic model of ... -
An Energetics Perspective for the Response of the Indian Summer Monsoon to Land Processes in a Coupled General Circulation Model
The Indian summer monsoon is a coupled land-ocean-atmosphere phenomenon that supplies about 80% of the annual rainfall that the region receives. The monsoon season typically begins on June 1 st with a steep rise in rainfall ... -
Estimation of Glacier Mass Balance at Basin Scale in the Himalaya for Recent Decades and Future
The Himalayan glaciers are a major source of perennial river systems which support the livelihood of millions of people in south Asia. Therefore, it is important to understand changes in water resources due to changes in ... -
Experimental investigation of turbulent bursts in the atmospheric surface layer over the tropics
Turbulence, an important characteristic of the atmospheric boundary layer (ABL), is mainly responsible for the transport of heat, moisture, momentum, pollutants, etc., in the atmosphere. As with any turbulent flow, our ... -
Extended Range Predictability And Prediction Of Indian Summer Monsoon
(2009-03-17)Indian summer monsoon (ISM) is an important component of the tropical climate system, known for its regular seasonality and abundance of rainfall over the country. The droughts and floods associated with the year-to-year ... -
Extratropical Influence on the Sub-seasonal Rainfall Deficit in Indian Summer Monsoon
The variability of Indian monsoon on a range of timescales - seasonal to interannual to decadal - has been studied and characterised extensively over the past several decades. On the mechanistic front, the role ... -
Extremes of Indian Summer Monsoon Rainfall and Equatorial Indian Ocean Oscillation
Our studies suggest that the equatorial Indian Ocean Oscillation, which is the atmospheric component of Indian Ocean Dipole, is as important as El Nino and Southern Oscillation for the interannual variation of Indian Summer ... -
Fine-Scale Structure Of Diurnal Variations Of Indian Monsoon Rainfall : Observational Analysis And Numerical Modeling
(2010-12-31)In the current study, we have presented a systematic analysis of the diurnal cycle of rainfall over the Indian region using satellite observations, and evaluated the ability of the Weather Research and Forecasting Model ...