The Spatio–Temporal Variation of Spring Frost in Xinjiang from 1971 to 2020

Under the background of intensifying global change, frequent occurrence agrometeorological disasters has an adverse impact on social economy. Low-temperature weather in spring is one main Xinjiang. Studying spatial and temporal characteristics low temperatures Xinjiang great significance. However, research spatiotemporal variation frost arid areas currently lacking, which limits our understanding development mechanism typical disastrous events areas. Therefore, basis daily meteorological data 40 stations Province China from 1971 to 2020, we studied heterogeneity through trend analysis, Mann–Kendall test, Kriging interpolation, wavelet analysis. Results showed that frequency had Northern Southern The entire northern region upward trend, whereas a downward trend. Severe moderate mainly occurred duration April, was March. Obvious 15-, 10-, 20-year oscillation cycles were observed entire, southern, regions Xinjiang, respectively. This study can provide useful reference for prediction corresponding