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Animesh Maitra
Researcher at University of Calcutta
Publications - 147
Citations - 1577
Animesh Maitra is an academic researcher from University of Calcutta. The author has contributed to research in topics: Attenuation & Disdrometer. The author has an hindex of 20, co-authored 134 publications receiving 1211 citations.
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Journal ArticleDOI
Fade-Slope Model for Rain Attenuation Prediction in Tropical Region
Dalia Das,Animesh Maitra +1 more
TL;DR: The matching between measurement and prediction has been improved by predicting the fade slope from the modified VDK model instead of using the direct slope measurement.
Journal ArticleDOI
An empirical method for source apportionment of black carbon aerosol: Results from Aethalometer observations at five different locations in India.
V. Ravi Kiran,M. Venkat Ratnam,B. V. Krishna Murthy,Yogesh Kant,P. Prasad,M. Roja Raman,S. V. B. Rao,T. V. Lakshmi Kumar,Animesh Maitra +8 more
TL;DR: An empirical method which also relies on Aethalometer observations named as 'Two alpha method' which assumes angstrom exponent from fossil fuel as 1 and estimates bio-mass fraction andAngstrom exponent forBio-mass burning to provide spatio-temporal variability in sources of BC is demonstrated.
Journal ArticleDOI
Growth in mid-monsoon dry phases over the Indian region: prevailing influence of anthropogenic aerosols
Rohit Chakraborty,Bijay Kumar Guha,Shamitaksha Talukdar,Madineni Venkat Ratnam,Animesh Maitra +4 more
Abstract: . A detailed investigation on the potentially drought-prone regions over India
is presented in this study based on the balance between precipitation
and potential evapotranspiration (PET) during the southwest Asian
mid-monsoon season. We introduce a parameter named dry day frequency (DDF)
which is found suitable to present the drought index (DI) in mid-monsoon
season, hence strongly associated with the possibility of drought
occurrences. The present study investigates the probable aspects which
influence the DDF over these regions, revealing that the abundance of
anthropogenic aerosols especially over urbanized locations has a prevailing
role in the growth of DDF during the last few decades. The prominent increasing
trend in DDF over Lucknow (26.84 ∘ N, 80.94 ∘ E), a
densely populated urban location situated in the Indo-Gangetic Plain,
strongly reflects the dominant association of anthropogenic aerosols with
the increasing dry phase occurrences. Increase in DDF ( ∼90 %) during the last 60 years is observed over this urban area compared
to a broader region in its surroundings. In addition, periodic impacts of
large-scale phenomena like ENSO (El Nino–Southern Oscillation) or SSN
(sunspot number) become weaker when the study location is downscaled
towards an urbanized region. Finally, when long-term projections of DDF are
drawn using the high urbanization scenario of RCP 8.5, a huge rise in dry
days is seen during mid-July to mid-September (reaching up to 50 dry days
by the year 2100 over Lucknow), which will be a crucial concern for policymakers in future.
Journal ArticleDOI
Rain attenuation prediction during rain events in different climatic regions
Dalia Das,Animesh Maitra +1 more
TL;DR: In this article, a rain attenuation prediction method has been applied to different climatic regions to test the validity of the model and the significant difference in rain rate and attenuation statistics for the tropical and temperate region needs to be considered in developing channel model to predict time series of rain attenuated for earth space communication links.