Journal ArticleDOI
Temporal variability and radiative impact of black carbon aerosol over tropical urban station Hyderabad
Umesh Chandra Dumka,Umesh Chandra Dumka,R. K. Manchanda,P. R. Sinha,S. Sreenivasan,K. Krishna Moorthy,S. Suresh Babu +6 more
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TLDR
In this paper, the authors studied the time variability of black carbon (BC) aerosols over different timescales (daily, weekly and annual) over a tropical urban location Hyderabad in India using seven channel portable Aethalometer.About:
This article is published in Journal of Atmospheric and Solar-Terrestrial Physics.The article was published on 2013-12-01. It has received 67 citations till now. The article focuses on the topics: Radiative forcing & Aethalometer.read more
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Journal ArticleDOI
Carbonaceous aerosols and pollutants over Delhi urban environment: Temporal evolution, source apportionment and radiative forcing.
Deewan Singh Bisht,Umesh Chandra Dumka,Dimitris G. Kaskaoutis,Atar Singh Pipal,Atul Srivastava,Vijay K. Soni,S. D. Attri,M. Sateesh,Suresh Tiwari +8 more
TL;DR: Concentrated weighted trajectory (CWT) analysis reveals that the potential sources for the carbonaceous aerosols and pollutants are local emissions within the urban environment and transported smoke from agricultural burning in northwest India during post-monsoon.
Journal ArticleDOI
Crop Residue Burning in Northern India: Increasing Threat to Greater India
TL;DR: In this article, the authors present detailed analysis using both satellite and ground-based sources, which show an increasing impact of crop residue burning over the eastern parts of the Indo-Gangetic Basin and also over parts of central and southern India.
Journal ArticleDOI
What controls the seasonal cycle of black carbon aerosols in India
Rajesh Kumar,Mary C. Barth,Gabriele Pfister,Vijayakumar S. Nair,Sachin D. Ghude,Narendra Ojha +5 more
TL;DR: In this paper, the seasonal variability of black carbon aerosols in India is studied using high resolution (10 km) BC simulations conducted using the Weather Research and Forecasting Model coupled with Chemistry.
Journal ArticleDOI
Scattering and absorption properties of near-surface aerosol over Gangetic–Himalayan region: the role of boundary-layer dynamics and long-range transport
TL;DR: The Ganges Valley Aerosol Experiment (GVAX) was initiated in Nainital from June 2011 to March 2012 with the aim of examining the aerosol properties, source regions, uplift mechanisms and aerosol-radiation-cloud interactions.
Journal ArticleDOI
Black carbon aerosol in India: A comprehensive review of current status and future prospects
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
References
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Book
An Introduction to Boundary Layer Meteorology
TL;DR: In this article, the boundary layer is defined as the boundary of a boundary layer, and the spectral gap is used to measure the spectral properties of the boundary layers of a turbulent flow.
Journal ArticleDOI
Climate Forcing by Anthropogenic Aerosols
Robert J. Charlson,Stephen E. Schwartz,J. M. Hales,Robert D. Cess,James A. Coakley,James Hansen,D. J. Hofmann +6 more
TL;DR: The aerosol forcing has likely offset global greenhouse warming to a substantial degree, however, differences in geographical and seasonal distributions of these forcings preclude any simple compensation.
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Global and regional climate changes due to black carbon
TL;DR: The second most important contribution to anthropogenic climate warming, after carbon dioxide emissions, was made by black carbon emissions as mentioned in this paper, which is an efficient absorbing agent of solar irradiation that is preferentially emitted in the tropics and can form atmospheric brown clouds in mixture with other aerosols.
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Optical Properties of Aerosols and Clouds: The Software Package OPAC
M. Hess,P. Koepke,I. Schult +2 more
TL;DR: In this article, the optical properties of aerosols and clouds are described, including extinction, scattering, and absorption coefficients, single scattering albedo, asymmetry parameter, and phase function.
Journal ArticleDOI
Estimates of the direct and indirect radiative forcing due to tropospheric aerosols: A review
Jim Haywood,Olivier Boucher +1 more
TL;DR: A review of the many developments in estimates of the direct and indirect global annual mean radiative forcing due to present-day concentra- tions of anthropogenic tropospheric aerosols since the Inter- governmental Panel on Climate Change (1996) is presented in this paper.
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