Atmospheric transmittance and its long-term changes in Estonia

被引：0
|
作者：
Russak, V
Joeveer, A
Kallis, A
机构：
来源：
METEOROLOGISCHE ZEITSCHRIFT | 1997年 / 6卷 / 03期
关键词：
D O I：
暂无
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
Atmospheric transmittance as a characteristic describing the state of the atmosphere has been studied on the basis of direct solar radiation data obtained from Toravere Actinometric Station (Estonia) for the period 1955 to 1995. Enhanced turbidity is typical to summer, while the air is dearest in winter During the first half-year the attenuation of solar radiation by aerosol dominates over that by water vapour. The analysis of the year-to-year changes in direct solar radiation has revealed a decrease in atmospheric transmittance. The annual mean atmospheric transmittance has decreased by 4.6 % over the period 1955 to 1995. The largest decrease occurred in the monthly means of April (9.1 %). The extinction of direct radiation by aerosol has been observed to have a tendency to increase. The annual averages of solar radiation attenuated by aerosol have increased by 47.0 % over the above-mentioned period.
引用
收藏
页码：137 / 141
页数：5
相关论文
共 50 条
  • [1] SIMPLE RADIOMETER FOR LONG-TERM MONITORING OF ATMOSPHERIC TRANSMITTANCE IN THE FAR IR
    DECOSMO, V
    [J]. IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 1984, 33 (02) : 126 - 127
  • [2] On detecting long-term changes in atmospheric moisture
    Elliott, WP
    [J]. CLIMATIC CHANGE, 1995, 31 (2-4) : 349 - 367
  • [3] The effect of long-term atmospheric changes on the macroevolution of birds
    Jose Serrano, Francisco
    Chiappe, Luis Maria
    Palmqvist, Paul
    Figueirido, Borja
    Long, John
    Luis Sanz, Jose
    [J]. GONDWANA RESEARCH, 2019, 65 : 86 - 96
  • [4] Long-term changes in hydrographic conditions in northern Adriatic and its relationship to hydrological and atmospheric processes
    Supic, N
    Grbec, B
    Vilibic, I
    Ivancic, I
    [J]. ANNALES GEOPHYSICAE, 2004, 22 (03) : 733 - 745
  • [5] Evidence for long-term changes in base cations in the atmospheric aerosol
    Lee, DS
    Espenhahn, SE
    Baker, S
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1998, 103 (D17) : 21955 - 21966
  • [6] Long-term changes in forest response to extreme atmospheric dryness
    Shekhar, Ankit
    Hortnagl, Lukas
    Buchmann, Nina
    Gharun, Mana
    [J]. GLOBAL CHANGE BIOLOGY, 2023, : 5379 - 5396
  • [7] Long-term and solar cycle changes in the atmospheric sodium layer
    Clemesha, BR
    Batista, PP
    Simonich, DM
    [J]. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, 1997, 59 (13) : 1673 - 1678
  • [8] Long-term changes in atmospheric electricity and the multivariate ENSO index
    Märcz F.
    Sátori G.
    [J]. Acta Geodaetica et Geophysica Hungarica, 2005, 40 (3-4): : 379 - 390
  • [9] INTRODUCTION TO SYMPOSIUM ON ATMOSPHERIC POLLUTION - ITS LONG-TERM IMPLICATIONS
    STURGIS, KB
    [J]. PROCEEDINGS OF THE AMERICAN PHILOSOPHICAL SOCIETY, 1970, 114 (01) : 1 - 2
  • [10] LONG-TERM CHANGES IN CONCENTRATION AND DEPOSITION OF ATMOSPHERIC MERCURY OVER SCANDINAVIA
    IVERFELDT, A
    MUNTHE, J
    BROSSET, C
    PACYNA, J
    [J]. WATER AIR AND SOIL POLLUTION, 1995, 80 (1-4): : 227 - 233
12345