A homogeneity test applied to precipitation data

TL;DR: In this paper, the authors analyzed daily and monthly records from 89 pluviometric stations in the period 1970-2016 and distributed between 29°12′ S and 39°30′ S.

TL;DR: In this article, the authors investigate the atmospheric circulation impact on snow cover duration (SCD) and maximum seasonal depth of snow cover (MDS) in Poland in the twentieth century, and they find that during the period 1966/67-1995/96 the zonal circulation dominated over the meridional one in influencing the SCD variability and change (the exception were areas with the most intensive foehn effect).

Abstract: The aim of the article was to provide a detailed analysis of pressure conditions, employing the anomalies of geopotential heights, during the occurrence of heat waves in Central Europe, but also in the days preceding and following their occurrence. The study uses data from 1966 to 2015 from the Institute of Meteorology and Water Management—National Research Institute, Deutscher Wetterdienst and the National Centre for Environmental Prediction/National Centre for Atmospheric Research (NCEP/NCAR). A heat wave was defined as a sequence of at least 3 days with a maximum daily air temperature of >30°C. The study showed an increase in the number of hot days, which was statistically significant in the majority of the area. In the analysed years, an increasing number of heat waves were recorded, and this occurrence was associated with high pressure systems. Anticyclonic blocking in the summer inhibits the zonal flow of air masses and intensifies meridional flow, which in Central Europe in the summer means the presence of polar continental and tropical air masses. During heat waves, there were positive anomalies of isobaric surface heights over the study area with a maximum in the upper troposphere. On average, anomalies at the 300 hPa pressure level began to form over the Atlantic Ocean. Determining atmospheric preconditions of persisting blocking events in summer resulting in heat waves may be helpful in predicting thereof.

TL;DR: In this article, the spatio-temporal variations of monthly averaged maximum, mean and minimum surface air temperatures (Tmax, Tmean, Tmin) in Thailand for the period between 1951 and 2003 have been examined using Principal Component Analysis.

TL;DR: In this paper, a possible alternative to the hypothesis that the sequence X 1, X 2, X 3, X 4, X 5, X 6, X 7, X 8, X 9, X 10, X 11, X 12, X 13, X 14, X 15, X 16, X 17, X 18, X 19, X 20, X 21, X 22, X 23, X 24, X 25, X 26, X 27, X 28, X 29, X 30, X

TL;DR: In this paper, a method for testing for serial correlation in least-squares regression on a second correlated sequence is proposed. But the problem is that the critical values of the test statistic in general depend on the configuration of the xi's.