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  Estonian Journal of Ecology

ISSN 1736-7549 (electronic)   ISSN 1736-602X (print)
An international scientific journal

Formerly: Proceedings of the Estonian Academy of Sciences: Biology, Ecology
(ISSN 1406-0914)
Published since 1952
 

Estonian Journal of Ecology

ISSN 1736-7549 (electronic)   ISSN 1736-602X (print)
An international scientific journal

Formerly: Proceedings of the Estonian Academy of Sciences: Biology, Ecology
(ISSN 1406-0914)
Published since 1952
 

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Changes in the spectral aerosol optical thickness in Estonia (1951–2004); 69–76

(Full article in PDF format)


Authors

Viivi Russak, Ain Kallis, Anne Jõeveer, Hanno Ohvril, Hilda Teral

Abstract

Broadband solar radiation has been measured during several decades, but the history of spectral measurements is relatively short. Several models exist for the calculation of the spectral atmospheric aerosol thickness from broadband solar radiation data. Using the method elaborated at Moscow University, aerosol optical thickness at 550 nm was calculated for Tartu–Tõravere Meteoro­logical Station (Estonia) for the period 1951–2004. A significant increase in the spectral as well as broadband optical thickness is characteristic until the late 1980s, while during the last 15–20 years a sharp decrease was observed. Besides changes in the aerosol burden, changes in the features of dominating particles, as well as in the seasonal cycle, were found during the period under study.

Keywords

solar radiation, aerosol, optical thickness, multi-annual changes.

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Current Issue: Vol. 63, Issue 4, 2014




Publishing schedule:
No. 1: 20 March
No. 2: 20 June
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