@Article{KumarBPVSNEJAG:2017:InInGa,
author = "Kumar, C. P. Anil and Balan, Nalan and Panneerselvam, C. and
Victor, N. Jeni and Selvaraj, C. and Nair, K. U. and Elango, P.
and Jeeva, K. and Akhila, J. C. and Gurubaran, S.",
affiliation = "{Indian Institute of Geomagnetism} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Indian Institute of Geomagnetism}
and {Indian Institute of Geomagnetism} and {Indian Institute of
Geomagnetism} and {Indian Institute of Geomagnetism} and {Indian
Institute of Geomagnetism} and {Indian Institute of Geomagnetism}
and {M.G. University} and {Indian Institute of Geomagnetism}",
title = "Investigation of the influence of galactic cosmic rays on clouds
and climate in Antarctica",
journal = "Proceedings of the Indian National Science Academy",
year = "2017",
volume = "83",
number = "3",
pages = "631--644",
month = "Sept",
keywords = "Global Electric Circuit, Cosmic Rays, Antarctic Cloud Anomalies,
Cloud-Microphysics, Ion-mediated Nucleation.",
abstract = "This paper studies the effects of galactic cosmic rays on clouds
and snow-fall rates in Antarctica using nine years of data
(2001-2009) covering the long deep solar minimum (2007-2009) for
the first time. Measurements of the fair-weather air earth current
(Jz ) at the Indian Antarctic station Maitri (70º45'S, 11º43E),
and equivalent galactic cosmic ray (GCR) flux from the neutron
monitor measurements made at the American station McMurdo (77º51S,
166º40E) are used for the study. Meteorological data from the
Antarctic stations Maitri, Vostok (78º27S,106º52E), Scott Base
(77º51S, 166º46E) and Antarctic Data base are also used. The
results show that low level cloud coverage (pressure >680 hPa) is
positively correlated to GCR flux with the maximum correlation
(31%) being at the long solar minimum (2007-2009) when snow-fall
increased by 14%. The observed link between cosmic rays and
climate in Antarctica is discussed in terms of ion-aerosol
clear-sky hypothesis and ion-aerosol near-cloud hypothesis. GCR
enhanced the cloud formation, and the increased low level clouds
have invigoration to reflect more heat back to space.",
doi = "10.16943/ptinsa/2017/49028",
url = "http://dx.doi.org/10.16943/ptinsa/2017/49028",
issn = "0370-0046",
language = "en",
targetfile = "402-1234-1-SM.pdf",
urlaccessdate = "19 mar. 2024"
}