Author(s): Ramesh S. V. Teegavarapu
Linked Author(s): Ramesh Teegavarapu
Keywords: No Keywords
Abstract: Trends in annual extremes of monthly precipitation totals and minimum and maximum temperatures at over 1200 locations in the U. S. are evaluated. Monthly data of these climatic variables obtained from the United States Historical Climatology Network (USHCN) for the period 1910-2019 are used for this analysis. The trends are evaluated using nonparametric Spearman’s rank correlation and Mann-Kendall tests. Trends in specific months for temperature and precipitation are also assessed. Results indicating statistically significant increasing trends for precipitation are mainly noted for sites in the northeastern U. S. Decreasing as well as increasing trends are noted for annual extremes of maximum temperature with spatially uniform increasing trends evident for minimum temperature. Discrepancies from the two nonparametric tests are noted in the number of sites with statistically significant trends when two nonparametric tests are used.
Year: 2022