Author
Soumyajyoti Jana
Bio: Soumyajyoti Jana is an academic researcher from University of Calcutta. The author has contributed to research in topics: Boundary layer & Gravity wave. The author has an hindex of 7, co-authored 20 publications receiving 148 citations.
Topics: Boundary layer, Gravity wave, Stratosphere, Lapse rate, Aerosol
Papers
More filters
TL;DR: In this article, a microwave radiometer was used for nowcasting of heavy rain events at Kolkata (22.65°N, 88.45°E), a tropical location.
39 citations
TL;DR: In this paper, near surface aerosol black carbon (BC) concentration data were collected using a seven channel Aethalometer (AE31) during June 2012-May 2013 in Kolkata (22° 34′E, 88° 22′N), a metropolitan city located near the land-ocean boundary in Eastern India.
33 citations
TL;DR: In this article, the authors studied the effect of increased air pollution on the boundary layer meteorology of Kolkata and found that PM10 was the dominant atmospheric pollutant during the Deepawali festival.
31 citations
22 citations
01 Aug 2014
TL;DR: In this paper, the effects of the convective rain on various atmospheric parameters have been investigated at Kolkata (22.57°N, 88.37°E), India, during pre-monsoon and monsoon period of 2013.
Abstract: The effects of the convective rain on various atmospheric parameters have been investigated at Kolkata (22.57°N, 88.37°E), India, during pre-monsoon and monsoon period of 2013. Various parameters like cloud base height and depth, liquid water content, rain rate and rain drop size distribution (DSD) are observed concurrently. The atmospheric electric field measured with an electric field monitor and the attenuation and depolarisation of satellite signals measured by a Ku-band receiving system are also studied during rain events. The instability indices obtained from radiometric measurements and the rain height profiles from micro rain radar are used to classify rain into two types, namely, convective and stratiform. The signatures of rain events on multi-technique observations are studied to indicate the various aspects of convective processes at a tropical location.
19 citations
Cited by
More filters
TL;DR: In this paper, two years of aerosol spectral light absorption measurements, using filter based technique, from the central Indo-Gangetic plain (IGP), Gorakhpur (26.75°N, 83.38°E, 85 m aml), are analyzed to study their seasonal behavior and quantify their magnitude in terms of absorbing aerosols loading and source speciation.
81 citations
72 citations
TL;DR: It is concluded that for effective pollution mitigation in S/SEA countries, quantifying drivers, sources and impacts of pollution need a thorough data analysis through ground-based instrumentation, models and integrated research approaches.
Abstract: A better understanding of land cover/land use changes (LCLUC) and their interactions with the atmospheric environment is essential for the sustainable management of natural resources, environmental protection, air quality, agricultural planning and food security. The 15 papers published in this focus issue showcase a variety of studies relating to drivers and impacts of LCLUC and air pollution in different South/Southeast Asian (S/SEA) countries. This synthesis article, in addition to giving context to the articles in this focus issue, also reviews the broad linkages between population, LCLUC and air pollution. Additionally, we identify knowledge gaps and research priorities that are essential in addressing air pollution issues in the region. We conclude that for effective pollution mitigation in S/SEA countries, quantifying drivers, sources and impacts of pollution need a thorough data analysis through ground-based instrumentation, models and integrated research approaches. We also stress the need for the development of sustainable technologies and strengthening the scientific and resource management communities through capacity building and training activities to address air pollution issues in S/SEA countries.
67 citations
TL;DR: The variability, trend, and exceedance analysis of PM2.5 measured at US Embassy and Consulate in five Indian megacities for six years suggests a statistically significant decreasing trend and can be attributed to the recent policies and regulations implemented in Delhi and other cities for the abatement of air pollution.
67 citations
TL;DR: A comprehensive review of black carbon measurements in India from a survey of >140 studies spanning 2002-2018 is presented in this paper, where the authors identify key areas for improvement, such as the need for long-term BC monitoring networks, especially in regions where estimated emissions are high but measurement coverage is low; the general lack of understanding, despite some recent reports, of BC aerosol mixing states, aging and direct climate effects in the Indian context; the need to shift from qualitative approaches of BC source apportionment to robust quantitative measures; and the prospects for coupled chemical-opt
67 citations