Historical observations of cloudiness (1882–2012) over a large urban area of the eastern Mediterranean (Athens)
Clouds play a major role in the radiative balance of our planet and largely control dynamic and thermal atmospheric processes that affect the climatic system. In addition to cloud cover (CC), different types of clouds are of special interest, as they contribute in different ways to the energy budget...
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| Veröffentlicht in: | Theoretical and applied climatology 2019-07, Vol.137 (1-2), p.283-295 |
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| creator | Founda, Dimitra Nastos, P. T. Pierros, F. Kalimeris, A. |
| description | Clouds play a major role in the radiative balance of our planet and largely control dynamic and thermal atmospheric processes that affect the climatic system. In addition to cloud cover (CC), different types of clouds are of special interest, as they contribute in different ways to the energy budget between the earth and the atmosphere. The study analyzes historical sub-daily reports from cloudiness observations conducted at the National Observatory of Athens, dating since the late nineteenth century. Long-term trends and diurnal, intra-annual, and inter-annual variability of both CC and frequency of prevailing cloud types were estimated. The analysis revealed statistically significant positive trends (
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| doi_str_mv | 10.1007/s00704-018-2596-0 |
| format | Article |
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p
< 0.001) in CC over the entire study period, more pronounced in spring and summer. Important changes in the prevalence frequency (PF) of certain cloud types over the last 60 years were also detected. Low, middle, and high clouds exhibited significant long-term trends of opposite sign. A marked increase in the PF of low and high clouds was observed in the recent decades, accompanied with simultaneous decrease in the middle cloud occurrence. Convective clouds prevailed increasingly more frequently over time during winter, while low stratiform clouds declined, in agreement with other observations worldwide. Significant correlation was also found between the PF of stratiform clouds and precipitation frequency.</description><identifier>ISSN: 0177-798X</identifier><identifier>EISSN: 1434-4483</identifier><identifier>DOI: 10.1007/s00704-018-2596-0</identifier><language>eng</language><publisher>Vienna: Springer Vienna</publisher><subject>Annual variations ; Aquatic Pollution ; Atmospheric processes ; Atmospheric Protection/Air Quality Control/Air Pollution ; Atmospheric Sciences ; Climate science ; Climate system ; Climatology ; Cloud cover ; Cloud types ; Cloudiness ; Clouds ; Convective clouds ; Earth ; Earth and Environmental Science ; Earth Sciences ; Energy budget ; Interannual variability ; Original Paper ; Precipitation ; Statistical analysis ; Stratiform clouds ; Trends ; Urban areas ; Waste Water Technology ; Water Management ; Water Pollution Control</subject><ispartof>Theoretical and applied climatology, 2019-07, Vol.137 (1-2), p.283-295</ispartof><rights>Springer-Verlag GmbH Austria, part of Springer Nature 2018</rights><rights>Theoretical and Applied Climatology is a copyright of Springer, (2018). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c316t-77614d71da47c3671805affd305a605f9a2ffba1b8559346a043135fa76f51e33</citedby><cites>FETCH-LOGICAL-c316t-77614d71da47c3671805affd305a605f9a2ffba1b8559346a043135fa76f51e33</cites><orcidid>0000-0003-1741-9847</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00704-018-2596-0$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00704-018-2596-0$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,781,785,27926,27927,41490,42559,51321</link.rule.ids></links><search><creatorcontrib>Founda, Dimitra</creatorcontrib><creatorcontrib>Nastos, P. T.</creatorcontrib><creatorcontrib>Pierros, F.</creatorcontrib><creatorcontrib>Kalimeris, A.</creatorcontrib><title>Historical observations of cloudiness (1882–2012) over a large urban area of the eastern Mediterranean (Athens)</title><title>Theoretical and applied climatology</title><addtitle>Theor Appl Climatol</addtitle><description>Clouds play a major role in the radiative balance of our planet and largely control dynamic and thermal atmospheric processes that affect the climatic system. In addition to cloud cover (CC), different types of clouds are of special interest, as they contribute in different ways to the energy budget between the earth and the atmosphere. The study analyzes historical sub-daily reports from cloudiness observations conducted at the National Observatory of Athens, dating since the late nineteenth century. Long-term trends and diurnal, intra-annual, and inter-annual variability of both CC and frequency of prevailing cloud types were estimated. The analysis revealed statistically significant positive trends (
p
< 0.001) in CC over the entire study period, more pronounced in spring and summer. Important changes in the prevalence frequency (PF) of certain cloud types over the last 60 years were also detected. Low, middle, and high clouds exhibited significant long-term trends of opposite sign. A marked increase in the PF of low and high clouds was observed in the recent decades, accompanied with simultaneous decrease in the middle cloud occurrence. Convective clouds prevailed increasingly more frequently over time during winter, while low stratiform clouds declined, in agreement with other observations worldwide. 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T.</au><au>Pierros, F.</au><au>Kalimeris, A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Historical observations of cloudiness (1882–2012) over a large urban area of the eastern Mediterranean (Athens)</atitle><jtitle>Theoretical and applied climatology</jtitle><stitle>Theor Appl Climatol</stitle><date>2019-07-01</date><risdate>2019</risdate><volume>137</volume><issue>1-2</issue><spage>283</spage><epage>295</epage><pages>283-295</pages><issn>0177-798X</issn><eissn>1434-4483</eissn><abstract>Clouds play a major role in the radiative balance of our planet and largely control dynamic and thermal atmospheric processes that affect the climatic system. In addition to cloud cover (CC), different types of clouds are of special interest, as they contribute in different ways to the energy budget between the earth and the atmosphere. The study analyzes historical sub-daily reports from cloudiness observations conducted at the National Observatory of Athens, dating since the late nineteenth century. Long-term trends and diurnal, intra-annual, and inter-annual variability of both CC and frequency of prevailing cloud types were estimated. The analysis revealed statistically significant positive trends (
p
< 0.001) in CC over the entire study period, more pronounced in spring and summer. Important changes in the prevalence frequency (PF) of certain cloud types over the last 60 years were also detected. Low, middle, and high clouds exhibited significant long-term trends of opposite sign. A marked increase in the PF of low and high clouds was observed in the recent decades, accompanied with simultaneous decrease in the middle cloud occurrence. Convective clouds prevailed increasingly more frequently over time during winter, while low stratiform clouds declined, in agreement with other observations worldwide. Significant correlation was also found between the PF of stratiform clouds and precipitation frequency.</abstract><cop>Vienna</cop><pub>Springer Vienna</pub><doi>10.1007/s00704-018-2596-0</doi><tpages>13</tpages><orcidid>https://orcid.org/0000-0003-1741-9847</orcidid></addata></record> |
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| subjects | Annual variations Aquatic Pollution Atmospheric processes Atmospheric Protection/Air Quality Control/Air Pollution Atmospheric Sciences Climate science Climate system Climatology Cloud cover Cloud types Cloudiness Clouds Convective clouds Earth Earth and Environmental Science Earth Sciences Energy budget Interannual variability Original Paper Precipitation Statistical analysis Stratiform clouds Trends Urban areas Waste Water Technology Water Management Water Pollution Control |
| title | Historical observations of cloudiness (1882–2012) over a large urban area of the eastern Mediterranean (Athens) |
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