Prolonged dry episodes over Northeast China during the period 1961-2012
文献类型：SCI/SSCI论文
| 作者 | Kong Q. Q.; Ge, Q. S.; Zheng, J. Y.; Xi, J. C. |
| 发表日期 | 2015 |
| 关键词 | iberian peninsula spells precipitation droughts 20th-century wet trends basin |
| 英文摘要 | Spatial and temporal changes of prolonged dry episodes, defined by the 90th percentile of consecutive no-rain days (< 1 mm/day) in both the wet (May to September) and dry seasons (October to April), were investigated using daily precipitation data of 72 meteorological stations over Northeast China from 1961 to 2012. Increasing trends are detected for the prolonged dry episode duration at 94.4 % of the stations in the wet season, and 26.5 % of these increasing trends are statistically significant at the 5 % level. In the dry season, 77.8 % of the stations show decreasing trends, and 32.1 % of these decreasing trends are significant at the 5 % level. The drought trend in the wet season detected by the prolonged dry episode duration is more prominent than that detected by the total number of no-rain days or the Standard Precipitation Index. The ratio between the prolonged dry episode duration and total number of no-rain days exhibits a significant (at the 5 % level) increase of 8.3 %/52 years in the wet season and a significant decrease (at the 5 % level) of nearly 11 %/52 years. An overall dry (before 1980), wet (during the 1980s), and dry (after 1990) tendency in the wet season is detected at the regional average level. Inter-annual variations of the prolonged dry episode duration at individual stations show four patterns. The most predominant pattern is similar to the regional average condition but with larger amplitude and mainly occurring over the northern part of Northeast China. Our study provides a more in-depth case to monitor droughts caused by extremely long dry spells and supports studies over other regions. |
| 出处 | Theoretical and Applied Climatology |
| 卷 | 122 |
| 期 | 3-4 |
| 页 | 711-719 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0177-798X |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38679]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Kong Q. Q.,Ge, Q. S.,Zheng, J. Y.,et al. Prolonged dry episodes over Northeast China during the period 1961-2012. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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