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Related papers: Aerosol Characteristics at a High Altitude Locatio…

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Aerosols, both natural and anthropogenic, play an important role in the atmospheric science, by imparting radiative forcing and perturbing the radiative balance of the Earth atmosphere system as well as by degrading the environment. To…

Atmospheric and Oceanic Physics · Physics 2007-05-23 Ram Sagar , B. Kumar , P. Pant , U. C. Dumka , K. K. Moorthy , R. Sridharan

During the second land campaign (LC-II) organised by ISRO-GBP, extensive ground-based measurements of aerosol characteristics were carried out over Manora Peak (29.4oN; 79.5oE; 1951 metres above mean sea level), Nainital (a high altitude…

Atmospheric and Oceanic Physics · Physics 2007-05-23 Auromeet Saha , P. Pant , U. C. Dumka , P. Hegde , Manoj K. Srivastava , Ram Sagar

We present, for the first time, spectral behaviour of aerosol optical depths (AODs) over Manora Peak, Nainital located at an altitude of $\sim$ 2 km in the Shivalik ranges of central Himalayas. The observations were carried out using a…

Atmospheric and Oceanic Physics · Physics 2015-06-26 Ram Sagar , Brijesh Kumar , U. C. Dumka , K. Krishna Moorthy , P. Pant

Black carbon and mineral dust are key absorbing aerosols that influence atmospheric radiation and increasingly threaten global cryospheric stability. This study examines the long-range transport and seasonal variability of these aerosols…

Atmospheric and Oceanic Physics · Physics 2026-02-18 Abira Sengupta , Ayoti Banerjee , Sarbani Palit , Brendon Woodford

Aerosols from natural and antropogenic sources are one of the atmospheric components that have the largest spacial-temporal variability, depending on the type (land or ocean) surface, human activity and climatic conditions (mainly…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 Rubén D. Piacentini , Martín Freire , María I. Micheletti , Graciela M. Salum , Javier Maya , Alexis Mancilla , Beatriz García

Aerosols play a critical role in atmospheric chemistry, and affect clouds, climate, and human health. However, the spatial coverage of satellite-derived aerosol optical depth (AOD) products is limited by cloud cover, orbit patterns, polar…

Aerosol optical characteristics AOD and \AA ngstr\"om exponent is often used to asses environmental aerosol loading. AOD or Aerosol Optical Depth is an indirect measure of atmospheric aerosol loading by means of total extinction of incoming…

Atmospheric and Oceanic Physics · Physics 2014-03-31 Subhasis Banerjee , Sanjay K. Ghosh

Atmospheric aerosols can cause serious damage to human health and life expectancy. Using the radiances observed by NASA's Multi-angle Imaging SpectroRadiometer (MISR), the current MISR operational algorithm retrieves Aerosol Optical Depth…

Applications · Statistics 2012-07-30 Yueqing Wang , Xin Jiang , Bin Yu , Ming Jiang

Field studies were conducted in the winter of 2010 at two rural sites and an urban site in western Japan, and filter samples of total suspended particulate matter were collected every 24-h and analyzed for concentration and stable carbon…

Atmospheric aerosols or particulate matters are chemically complex and dynamic mixtures of solid and liquid particles. Sources of particulate matters include both natural and anthropogenic processes. The present work consists in determining…

Constraining the complex refractive indices, optical properties and size of brown carbon (BrC) aerosols is a vital endeavor for improving climate models and satellite retrieval algorithms. Smoldering wildfires are the largest source of…

UV observations with Cassini ISS Narrow Angle Camera of Titan's detached haze is an excellent tool to probe its aerosols content without being affected by the gas or the multiple scattering. Unfortunately, its low extent in altitude…

Earth and Planetary Astrophysics · Physics 2017-04-05 Benoît Seignovert , Pascal Rannou , Panayotis Lavvas , Thibaud Cours , Robert A. West

Aerosols exhibit periodic or cyclic variations depending on natural and anthropogenic sources over a region, which can get modulated by synoptic meteorological parameters such as winds, rainfall and relative humidity, and long-range…

Atmospheric and Oceanic Physics · Physics 2013-03-26 S. Ramachandran , Sayantan Ghosh , Amit Verma , Prasanta K. Panigrahi

A number of observations have shown that Rayleigh scattering by aerosols dominates the transmission spectrum of HD 189733b at wavelengths shortward of 1 $\mu$m. In this study, we retrieve a range of aerosol distributions consistent with…

Earth and Planetary Astrophysics · Physics 2015-06-17 Jae-Min Lee , Patrick G. J. Irwin , Leigh N. Fletcher , Kevin Heng , Joanna K. Barstow

Black carbon (BC) aerosol, the strongest absorber of visible solar radiation in the atmosphere, contributes to a large uncertainty in direct radiative forcing estimates. A primary reason for this uncertainty is inaccurate parameterizations…

Atmospheric and Oceanic Physics · Physics 2018-11-28 Rajan K. Chakrabarty , William R. Heinson

In this work we analyze one year observation of an Aeronet (GSFC-NASA Aerosol Robotic Network) sun-photometer installed on January 11, 2011 in CASLEO and being operational up to date. The main goal of placing the instrument in this location…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 Lidia Otero , Pablo Ristori , Raúl D'Elía , Juan Pallotta , Eduardo Quel

This study presents an extended analysis of aerosol optical depth at 501 nm (AOD) in the Alpine valley of Innsbruck, Austria, from 2007 to 2023, and offers a comparative analysis with the Alpine station of Davos, Switzerland. AOD is derived…

Atmospheric and Oceanic Physics · Physics 2024-01-01 Jochen Wagner , Alma Anna Ubele , Verena Schenzinger , Axel Kreuter

We present a new method to measure the vertical aerosol optical depth (VAOD) during clear nights using a wide-field imager - a CCD camera with a photographic lens on an equatorial mount. A series of 30-second exposures taken at different…

We are addressing the sites of isolated low mass star formation in the solar neighbourhood, i.e. small cloud cores within one kiloparsec. We aim at determining the physical parameters of the cores, i.e., temperature, volume density, column…

Astrophysics of Galaxies · Physics 2017-03-21 Bengt Larsson , René Liseau

Atmospheric turbidity is one of the key factors influencing the propagation of artificial light into the environment during cloudless nights. High aerosol loading can reduce the visibility of astronomical objects, and thus information on…

Instrumentation and Methods for Astrophysics · Physics 2023-06-13 Miroslav Kocifaj , František Kundracik , John Barentine
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