Search Results - "Sahai, A"

SNR Walls for Signal Detection by Tandra, R., Sahai, A.

“…This paper considers the detection of the presence/absence of signals in uncertain low SNR environments. Small modeling uncertainties are unavoidable in any…”
Get full text

Intraseasonal oscillation of land surface moisture and its role in the maintenance of CTCZ during the active phases of the Indian summer monsoon by Gautam, Pratibha, Chattopadhyay, Rajib, Martin, Gill, Joseph, Susmitha, Sahai, A. K.

“…What is the role of soil moisture in maintaining the continental tropical convergence zone (CTCZ) during the active phase of the monsoon? This question has…”
Get full text

Remote sensing and climate services improve irrigation water management at farm scale in Western-Central India by Roy, Adrija, Murtugudde, Raghu, Narvekar, Parag, Sahai, A.K., Ghosh, Subimal

“…The enormous progress in weather and extended range predictions for the Indian monsoon over the last decade has not been translated to operationalized…”
Get full text

Correction: Intraseasonal oscillation of land surface moisture and its role in the maintenance of CTCZ during the active phases of the Indian summer monsoon by Gautam, Pratibha, Chattopadhyay, Rajib, Martin, Gill, Joseph, Susmitha, Sahai, A. K.

Get full text

North Indian heavy rainfall event during June 2013: diagnostics and extended range prediction by Joseph, Susmitha, Sahai, A. K., Sharmila, S., Abhilash, S., Borah, N., Chattopadhyay, R., Pillai, P. A., Rajeevan, M., Kumar, Arun

“…The Indian summer monsoon of 2013 covered the entire country by 16 June, one month earlier than its normal date. Around that period, heavy rainfall was…”
Get full text

Extended range prediction of active‐break spells of Indian summer monsoon rainfall using an ensemble prediction system in NCEP Climate Forecast System by Abhilash, S., Sahai, A. K., Pattnaik, S., Goswami, B. N., Kumar, Arun

“…ABSTRACT This study analyses skill of an extended range prediction system to forecast Indian Summer Monsoon Rainfall (ISMR) 3–4 pentads in advance. A series of…”
Get full text

Future projection of Indian summer monsoon variability under climate change scenario: An assessment from CMIP5 climate models by Sharmila, S., Joseph, S., Sahai, A.K., Abhilash, S., Chattopadhyay, R.

“…In this study, the impact of enhanced anthropogenic greenhouse gas emissions on the possible future changes in different aspects of daily-to-interannual…”
Get full text

Changes in the thermodynamical profiles of the subsurface ocean and atmosphere induce cyclones to congregate over the Eastern Arabian Sea by Abhiram Nirmal, C. S., Abhilash, S., Martin, Max, Sankar, Syam, Mohapatra, M., Sahai, A. K.

“…The Arabian Sea accounts for a small fraction of Tropical Cyclones—about 2% of the annual global mean. However, the damage they might inflict there and along…”
Get full text

The Necessity and Sufficiency of Anytime Capacity for Stabilization of a Linear System Over a Noisy Communication Link-Part I: Scalar Systems by Sahai, A., Mitter, S.

“…In this paper, we review how Shannon's classical notion of capacity is not enough to characterize a noisy communication channel if the channel is intended to…”
Get full text

Nanomaterials Based Nanoplasmonic Accelerators and Light-Sources Driven by Particle-Beams by Sahai, Aakash A.

“…Unprecedented tens of TVm −1 fields are modeled to be realizable using novel nanoplasmonic surface crunch-in modes in nanomaterials. These relativistic…”
Get full text

What is a Spectrum Hole and What Does it Take to Recognize One? by Tandra, Rahul, Mishra, Shridhar Mubaraq, Sahai, Anant

“…ldquoSpectrum holesrdquo represent the potential opportunities for noninterfering (safe) use of spectrum and can be considered as multidimensional regions…”
Get full text

Multi-physics schema for sub-seasonal prediction of Indian summer monsoon by Kaur, Manpreet, Sahai, A. K., Phani, R., Joseph, S., Mandal, R., Dey, A., Chattopadhyay, R.

“…The biases due to model physics in simulating the Indian summer monsoon are investigated to construct a multi-physics forecast strategy for sub-seasonal…”
Get full text

Role of ocean–atmosphere interaction on northward propagation of Indian summer monsoon intra-seasonal oscillations (MISO) by Sharmila, S., Pillai, P. A., Joseph, S., Roxy, M., Krishna, R. P. M., Chattopadhyay, R., Abhilash, S., Sahai, A. K., Goswami, B. N.

“…Atmospheric dynamical mechanisms have been prevalently used to explain the characteristics of the summer monsoon intraseasonal oscillation (MISO), which…”
Get full text

Moisture dynamics of the northward and eastward propagating boreal summer intraseasonal oscillations: possible role of tropical Indo-west Pacific SST and circulation by Pillai, Prasanth A., Sahai, A. K.

“…Boreal summer intraseasonal oscillation (BSISO) has complex spatial structure due to the co-existence of equatorial eastward and off-equatorial northward…”
Get full text

Aspect of ECMWF downscaled Regional Climate Modeling in simulating Indian summer monsoon rainfall and dependencies on lateral boundary conditions by Ghosh, Soumik, Bhatla, R., Mall, R. K., Srivastava, Prashant K., Sahai, A. K.

“…Climate model faces considerable difficulties in simulating the rainfall characteristics of southwest summer monsoon. In this study, the dynamical downscaling…”
Get full text

Recent changes in the spatio-temporal characteristics of monsoon intraseasonal oscillations by Joseph, Susmitha, Sahai, A. K., Shabu, Hindhiya, Chattopadhyay, R., Kaur, Manpreet

“…Monsoon intraseasonal oscillations (MISOs) define a significant proportion of intraseasonal variability of the Indian summer monsoon. In the backdrop of…”
Get full text

Eastward propagating MJO during boreal summer and Indian monsoon droughts by Joseph, Susmitha, Sahai, A. K., Goswami, B. N.

“…Improved understanding of underlying mechanism responsible for Indian summer monsoon (ISM) droughts is important due to their profound socio-economic impact…”
Get full text

Prediction and monitoring of monsoon intraseasonal oscillations over Indian monsoon region in an ensemble prediction system using CFSv2 by Abhilash, S, Sahai, A. K, Borah, N, Chattopadhyay, R, Joseph, S, Sharmila, S, De, S, Goswami, B. N, Kumar, Arun

“…An ensemble prediction system (EPS) is devised for the extended range prediction (ERP) of monsoon intraseasonal oscillations (MISO) of Indian summer monsoon…”
Get full text

Evaluation and comparison of the subseasonal prediction skill of Indian summer monsoon in IITM CFSv2 and UKMO GloSea5 by Joseph, Susmitha, Chattopadhyay, R., Sahai, A. K., Martin, Gill M., Dey, Avijit, Mandal, Raju, Phani, R.

“…Documentation of the skill of a prediction system and its comparison with those of leading modelling centres are crucial in model development. This facilitates…”
Get full text

Aerosol indirect effect during the aberrant Indian Summer Monsoon breaks of 2009 by Manoj, M.G., Devara, P.C.S., Joseph, Susmitha, Sahai, A.K.

“…The significant role of aerosol–cloud interaction during the large-scale drought producing breaks of 2009 Indian Summer Monsoon is investigated in the present…”
Get full text