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CAPE - A link amid thermodynamics and microphysics for the occurrence of severe thunderstorms

2021 Mausam  
ikbZ xbZ tks eqDr laogu Lrj ¼,y- ,Q- lh-½ ls Åij fu/kkZfjr nkc Lrjksa ds Hkhrj ikbZ xbZ vkSj ok;q dh viMªk¶V xfr ds ln"k eku fu"izHkkoh mRIykodrk Lrj ¼,y- ,u- ch-½ esa yxHkx 30 - 50 eh-@ lsdsaM ik, x,A  ...  The study shows that Convective Available Potential Energy (CAPE) is instrumental in establishing a linkage among thermodynamics, dynamics, cloud microphysics, and lightning during severe thunderstorm  ...  A sequence of causes (C 1 , C 2 ….C n ) is constructed to take a Corresponding to each cause or decision, a set can be built up.  ... 
doi:10.54302/mausam.v57i2.472 fatcat:emyvuenryfctxaymil2rdu37lm

An Assessment of the Performance of ISRO's SCATSAT-1 Scatterometer

Suchandra A. Bhowmick, James Cotton, Alexander Fore, Raj Kumar, Christophe Payan, Ernesto Rodríguez, Anuja Sharma, Bryan Stiles, Ad Stoffelen, Anton Verhoef
2019 Current Science  
We also provide a preliminary assessment of the impact of the SCATSAT-1 data on operational forecasts in India and Europe.  ...  SCATSAT-1 is a continuity mission for the Oceansat-2 scatterometer, OSCAT-1, which provided useful ocean vector wind observations used in, among others, oceanography, numerical weather prediction (NWP)  ...  Finally, a validation (VAL) of final wind product derived from σ 0 using a geophysical model function is performed.  ... 
doi:10.18520/cs/v117/i6/959-972 fatcat:t4nwrkupzbe2zfr4iyj5d7rmae

Cyclone Amphan: Oceanic Conditions Pre- and Post-Cyclone using in situ and Satellite Observations

Suchandra A. Bhowmick, Neeraj Agarwal, Rashmi Sharma, R. Sundar, R. Venkatesan, C. Anoopa Prasad, K. N. Navaneeth
2020 Current Science  
Amphan, a category-5 tropical cyclone, originated over Bay of Bengal (BoB) and had a landfall in West Bengal, India on 20 May, causing havoc in the region.  ...  Buoy observations confirm this as there is a drop in SST from a peak of 32°C observed on 10 May 2020 to around 27.5°C on 19 May 2020 (>4°C drop) at the BD13 location (Figure 6 a ).  ...  This pre-monsoon cyclone created a huge catastrophe in West Bengal and Odisha as it had a landfall at Bakkhali on 20 May 2020.  ... 
doi:10.18520/cs/v119/i9/1510-1516 fatcat:isjs4sswe5dongv27lnoxu3vbm

Post-Launch Calibration–Validation and Data Quality Evaluation of SCATSAT-1

Raj Kumar, Suchandra A. Bhowmick, Abhisek Chakraborty, Anuja Sharma, Shweta Sharma, M. Seemanth, Maneesha Gupta, Prantik Chakraborty, Jalpa Modi, Tapan Misra
2019 Current Science  
Here we provide a brief description of the post-launch data quality evaluation and calibration-validation chain of the SCATSAT-1, the second scatterometers mission of Indian Space Research Organisation  ...  OSCAT operated in Ku-band at a nominal frequency of 13.51 GHz over a wide swath of 1400 km.  ...  It is a pencil-beam scatterometer with a 1 m parabolic dish antenna with dual-feed-generating horizontal and vertical polarization beams at incidence angle of 42.66° (HH) and 49.33° (VV) at a scan rate  ... 
doi:10.18520/cs/v117/i6/973-982 fatcat:wk2wrq7u5rge7auqb46muyhijq

The Benefits of the Ka-Band as Evidenced from the SARAL/AltiKa Altimetric Mission: Scientific Applications

Jacques Verron, Pascal Bonnefond, Lofti Aouf, Florence Birol, Suchandra Bhowmick, Stéphane Calmant, Taina Conchy, Jean-François Crétaux, Gérald Dibarboure, A. Dubey, Yannice Faugère, Kevin Guerreiro (+12 others)
2018 Remote Sensing  
The mission ended its nominal phase after three years in orbit and began a new phase (drifting orbit) in July 2016.  ...  SARAL/AltiKa proved also to be a great opportunity for inland waters applications, for observing ice sheet or icebergs, as well as for geodetic investigations.  ...  Acknowledgments: The SARAL/AltiKa mission is an achievement of a very fruitful cooperation between ISRO and CNES. The contribution of EUMETSAT to data distribution is also strongly appreciated.  ... 
doi:10.3390/rs10020163 fatcat:ty2shtipqzbzfgvfd7ghg7moum

Saral/AltiKa CAL-VAL

Cal-Val Team, A Shukla, K Babu, Suchandra Bhowmick, A Shayam, R Gangwar, K Mehta
-Kinematic processing of the buoys with respect to the reference sites using TRACK of GAMIT/GLOBK and a GUI package "Novatel GrafNav".  ...  software( MATLAB based) for filtering and additional processing in order to compare with altimeter • Buoyancy measurement equipment • Oceanographic sensors : GPS buoy based calibration involves using a  ... 

Analysis of Coastal altimeter Products & corrections

A Chakraborty, Maria Antonia, Suchandra Bhowmick, Remya Pg, Raj Kumar
N; 65-75 deg E) • The peak of PDF for coastal winds occurs for a lower wind speed in comparison to offshore winds. • The transition of wind data from offshore to coastal is abrupt in July. • The behavior  ... 

Validation of Geo-physical products from SARAL/AltiKa

Suchandra Bhowmick, K Mehta, A Shukla, K Babu, R Gangwar, A Shyam


Suchandra Bhowmick, Rashmi Sharma, Raj Kumar, K Babu, A Shukla, R Gairola
Validation using Indian Ocean Buoys With Assim from NDBC Buoy (m) RMSE=0.4877 Cor=0.911 no of points= 5098 out of 5281 collocated points % of valid validation points= 96.5% Validation of the SWH data from a)  ... 

Geophysical model function for wind speed retrieval from SARAL AltiKa: A sensitivity study

R Gairola, M Bushair, Suchandra Bhowmick
Objective of the study: • To develop a Geophysical Model Function for estimation of the microwave nadir-viewing radar backscatter of sea surface at Ka-band as a function of wind speed based on both theoretical  ...                                S S                         2 7 - 6 - 2 - 2 2 5 - 3 - 2 - 1 2 5 - 4 - 2 - U a U a a F                  ...  Objective of the study: • To develop a Geophysical Model Function for estimation of the microwave nadir-viewing radar backscatter of sea surface at Ka-band as a function of wind speed based on both theoretical  ... 

Validation of SARAL/AltiKa geo-physical products using in-situ and satellite observations

Suchandra Bhowmick, Raj Kumar, Rashmi Sharma, A Shukla, K Babu, Arun Kumar
Forcing Wind : The 6-hour analysis and forecast wind field from NCMRWF at a 0.25 X 0.25 Boundary Condition : From the WAM model (-70 o to 70 o N and 0 o to 160 o E)  ... 


Suchandra Bhowmick
There is a difference in total no. of PLTMs and OGDRs in 3rd slide, since extent of comparison dates are different. Thank You  ... 

Thank You to Our 2020 Peer Reviewers

Harihar Rajaram, Suzana Camargo, Christopher Cappa, Rebecca Carey, Rose Cory, Andrew Dombard, Kathleen Donohue, Lucy Flesch, Alessandra Giannini, Yu Gu, Gavin Hayes, Andrew Hogg (+21 others)
2021 Geophysical Research Letters  
Although we witnessed an increase in the number of submissions, the average number of days to complete a review increased by less than one day!! That says a lot about the diligence of our reviewers.  ...  We greatly appreciate the assistance of the reviewers in advancing open science, which is a key objective of AGU's data policy.  ...  Shapiro, Nikolai Shapiro, Serge A.  ... 
doi:10.1029/2021gl093126 fatcat:oybo7r3htfaxhf2colh2sr7yum

On Rayleigh-Taylor and Richtmyer-Meshkov Dynamics With Inverse-Quadratic Power-Law Acceleration

D. L. Hill, S. I. Abarzhi
2022 Frontiers in Applied Mathematics and Statistics  
While RT and RM instabilities are sister phenomena, a link of RT-to-RM dynamics requires better understanding.  ...  While for given problem parameters the early-time dynamics is uniquely defined, the solutions for the late-time dynamics form a continuous family parameterised by the interfacial shear and include special  ...  Abarzhi, SI, Bhowmick, A, Naveh, A, Pandian, A, Swisher, N, Stellingwerf, R, et al. Supernova, Nuclear Synthesis, Fluid Instabilities and Interfacial Mixing.  ... 
doi:10.3389/fams.2021.735526 fatcat:gxinh3zopvc45od4x375sxu33a

Altimetry for the future: Building on 25 years of progress

Saleh Abdalla, Abdolnabi Abdeh Kolahchi, Susheel Adusumilli, Suchandra Aich Bhowmick, Eva Alou-Font, Laiba Amarouche, Ole Baltazar Andersen, Helena Antich, Lotfi Aouf, Brian Arbic, Thomas Armitage, Sabine Arnault (+349 others)
2021 Advances in Space Research  
The paper starts with a general introduction followed by a section on Earth System Science including Ocean Dynamics, Sea Level, the Coastal Ocean, Hydrology, the Cryosphere and Polar Oceans and the "Green  ...  Instruments' development and satellite missions' evolutions are described in a fourth section.  ...  industries (e.g. fishing, oil drilling, and navigation), and SWH, wind speed, and wave periods measured by altimetry are being used by operational forecast centres for assimilation into wave forecast models (Bhowmick  ... 
doi:10.1016/j.asr.2021.01.022 fatcat:zgsllfqrgnfyporr7rs2dgb77e
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