J 2016

Variability in solar irradiance observed at two contrasting Antarctic sites

PETKOV, Boyan H., Kamil LÁSKA, Vito VITALE, Christian LANCONELLI, Angelo LUPI et. al.

Basic information

Original name

Variability in solar irradiance observed at two contrasting Antarctic sites

Authors

PETKOV, Boyan H. (100 Bulgaria, guarantor), Kamil LÁSKA (203 Czech Republic, belonging to the institution), Vito VITALE (380 Italy), Christian LANCONELLI (380 Italy), Angelo LUPI (380 Italy), Mauro MAZZOLA (380 Italy) and Marie BUDÍKOVÁ (203 Czech Republic, belonging to the institution)

Edition

Atmospheric Research, 2016, 0169-8095

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10500 1.5. Earth and related environmental sciences

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 3.778

RIV identification code

RIV/00216224:14310/16:00089599

Organization unit

Faculty of Science

UT WoS

000371651200013

Keywords in English

solar irradiance;Antarctica;environmental effect;ozone column;radiation amplification factor

Tags

Změněno: 19/10/2018 08:49, RNDr. Marie Budíková, Dr.

Abstract

V originále

he features of erythemally weighted (EW) and short-wave downwelling (SWD) solar irradiances, observed during the spring–summer months of 2007–2011 at Johann GregorMendel (63°48'S, 57°53'W, 7ma.s.l.) and Dome Concordia (75°06'S, 123°21'E, 3233 m a.s.l.) stations, placed at the Antarctic coastal region and on the interior plateau respectively, have been analysed and compared to each other. The EW and SWD spectral components have been presented by the corresponding daily integrated values and were examined taking into account the different geographic positions and different environmental conditions at both sites. The results indicate that at Mendel station the surface solar irradiance is strongly affected by the changes in the cloud cover, aerosols and albedo that cause a decrease in EW between 20% and 35%, and from 0% to 50% in SWD component, which contributions are slightly lower than the seasonal SWD variations evaluated to be about 71%. On the contrary, the changes in the cloud cover features at Concordia station produce only a 5% reduction of the solar irradiance, whilst the seasonal oscillations of 94% turn out to be the predominant mode. The present analysis leads to the conclusion that the variations in the ozone column cause an average decrease of about 46% in EW irradiance with respect to the value found in the case of minimum ozone content at each of the stations. In addition, the ratio between EW and SWD spectral components can be used to achieve a realistic assessment of the radiation amplification factor that quantifies the relationship between the atmospheric ozone and the surface UV irradiance.

Links

LM2010009, research and development project
Name: Projekt CzechPolar - České polární stanice: Stavba a operační náklady
Investor: Ministry of Education, Youth and Sports of the CR
MUNI/A/1370/2014, interní kód MU
Name: Globální environmentální změny v krajinné sféře Země v čase a prostoru (Acronym: GlobST)
Investor: Masaryk University, Category A