Summer hot extremes and antecedent drought conditions in Australia
نویسندگان
چکیده
The compound occurrence of extreme weather and/or climate events can cause stronger negative impacts than the individual events, and its frequency is increasing in several regions world. In this work, effect antecedent drought conditions on hot extremes during months December to February Australia was analysed for two periods (1979–2019 1950–2019). Standardized Precipitation Evapotranspiration Index (SPEI) indices Number Hot Days (NHD) Nights (NHN) were used assess temperature events. While link between dry heat more important north February, January it strong east coast. When temporal lags 1 3 are considered, there a correlation SPEI NHD/NHN concurrent month most study area. For previous months, area values decreased, but consistent spatial patterns obtained each month, namely correlations southwest southeast December, February. Tropical areas showed large NHN, including whereas temperate climates smaller with at month. Significant lead times longer night extremes, point predictive ability Australia. Moreover, coefficients using recent period (1979–2019) show similar patterns, higher 1950–2019 period. results highlight prospect an early prediction summer affected by spring.
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ژورنال
عنوان ژورنال: International Journal of Climatology
سال: 2022
ISSN: ['0899-8418', '1097-0088']
DOI: https://doi.org/10.1002/joc.7544