{"title":"1982-2015年波罗的海地区春夏季卫星云参数变化","authors":"P. Post, M. Aun","doi":"10.5194/asr-17-219-2020","DOIUrl":null,"url":null,"abstract":"Abstract. The satellite-based cloud climate data record CLARA-A2\nhas been used to analyse regional average time-series and regional maps of\ntrends in the Baltic Sea region, 1982–2015. The investigated cloud\nparameters were total fractional cloud cover and cloud top height. Cloud\nobservations from the Tartu-Toravere meteorological station were used as\nreference data for the same period. Fractional cloud cover from CLARA-A2 was\nin a good agreement with in situ data regarding the maxima and minima years\nand a downward trend in March over the 1982–2015 period. In June the\nfractional cloud cover interannual variability was very high and no clear\ntrend was seen. For cloud top heights summer and spring regional averages\nshowed opposite signs of the trend: for June positive and for March\nnegative. Winter and autumn seasons have been left out of analysis due to\ntoo large uncertainties in cloud products over latitudes higher than\n60 ∘ .","PeriodicalId":30081,"journal":{"name":"Advances in Science and Research","volume":"148 1","pages":"219-225"},"PeriodicalIF":0.0000,"publicationDate":"2020-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Changes in satellite-based cloud parameters in the Baltic Sea region during spring and summer (1982–2015)\",\"authors\":\"P. Post, M. Aun\",\"doi\":\"10.5194/asr-17-219-2020\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract. The satellite-based cloud climate data record CLARA-A2\\nhas been used to analyse regional average time-series and regional maps of\\ntrends in the Baltic Sea region, 1982–2015. The investigated cloud\\nparameters were total fractional cloud cover and cloud top height. Cloud\\nobservations from the Tartu-Toravere meteorological station were used as\\nreference data for the same period. Fractional cloud cover from CLARA-A2 was\\nin a good agreement with in situ data regarding the maxima and minima years\\nand a downward trend in March over the 1982–2015 period. In June the\\nfractional cloud cover interannual variability was very high and no clear\\ntrend was seen. For cloud top heights summer and spring regional averages\\nshowed opposite signs of the trend: for June positive and for March\\nnegative. Winter and autumn seasons have been left out of analysis due to\\ntoo large uncertainties in cloud products over latitudes higher than\\n60 ∘ .\",\"PeriodicalId\":30081,\"journal\":{\"name\":\"Advances in Science and Research\",\"volume\":\"148 1\",\"pages\":\"219-225\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-10-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advances in Science and Research\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.5194/asr-17-219-2020\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"Earth and Planetary Sciences\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Science and Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5194/asr-17-219-2020","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Earth and Planetary Sciences","Score":null,"Total":0}
Changes in satellite-based cloud parameters in the Baltic Sea region during spring and summer (1982–2015)
Abstract. The satellite-based cloud climate data record CLARA-A2
has been used to analyse regional average time-series and regional maps of
trends in the Baltic Sea region, 1982–2015. The investigated cloud
parameters were total fractional cloud cover and cloud top height. Cloud
observations from the Tartu-Toravere meteorological station were used as
reference data for the same period. Fractional cloud cover from CLARA-A2 was
in a good agreement with in situ data regarding the maxima and minima years
and a downward trend in March over the 1982–2015 period. In June the
fractional cloud cover interannual variability was very high and no clear
trend was seen. For cloud top heights summer and spring regional averages
showed opposite signs of the trend: for June positive and for March
negative. Winter and autumn seasons have been left out of analysis due to
too large uncertainties in cloud products over latitudes higher than
60 ∘ .