Climate Change Data Portal
| DOI | 10.1016/j.atmosres.2024.107361 |
| Characteristics and determining factors of spring-summer consecutive drought variations in Northwest China | |
| 发表日期 | 2024 |
| ISSN | 0169-8095 |
| EISSN | 1873-2895 |
| 起始页码 | 304 |
| 卷号 | 304 |
| 英文摘要 | Northwest China (NWC, defined by its administrative division) is an arid and semi-arid region where continuous drought occurs in spring and summer that severely affects crop growth and yields. However, the characteristics of spring-summer consecutive drought (SSCD) in NWC remain unknown. Based on daily observation data from 118 stations in NWC for the period 1961-2017, we investigated the variations in SSCD, as defined by the standardized precipitation evapotranspiration index (SPEI), and their determining factors. The SSCD intensity in NWC underwent a two-stage change rather than a sustained non-significant decrease during 1961-2017. Specifically, this intensity significantly decreased before 1993 (-0.19 decade(-1); p < 0.05) and increased thereafter (0.21 decade(-1); p < 0.05). The variations in SSCD in NWC were primarily determined by the variations in potential evapotranspiration (ET0)(.) The decrease and increase in ET0 (-19.52 mm decade(-1) and 10.77 mm decade(-1), respectively; p < 0.05) dominated those of SSCD in NWC during 1961-1993 and 1994-2017, respectively, with respective explanatory variances of 99.6% and 93.2%. Furthermore, the decrease in wind speed (-0.14 m s(-1) decade(-1); p < 0.05) dominated that in ET0 before 1993, whereas the decrease in relative humidity (-1.47% decade(-1); p < 0.05) and the weak recovery of wind speed (-0.06 m s(-1) decade(-1); p < 0.05) jointly dominated the increase in ET0 after 1993. Along with the increased SSCD after 1993, significant changes also occurred in the atmospheric circulation. An intensified anticyclonic anomaly occurred to the west of NWC, which provided a favorable circulation background for the increase in SSCD in NWC after the early 1990s. These findings provide a basis for further understanding drought and sustainable agricultural development in NWC under climate change. |
| 英文关键词 | Northwest China; Spring-summer consecutive drought; Standardized precipitation evapotranspiration; index; Potential evapotranspiration |
| 语种 | 英语 |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001223807100001 |
| 来源期刊 | ATMOSPHERIC RESEARCH
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/290299 |
| 作者单位 | Ningxia University; Ningxia University |
| 推荐引用方式 GB/T 7714 | . Characteristics and determining factors of spring-summer consecutive drought variations in Northwest China[J],2024,304. |
| APA | (2024).Characteristics and determining factors of spring-summer consecutive drought variations in Northwest China.ATMOSPHERIC RESEARCH,304. |
| MLA | "Characteristics and determining factors of spring-summer consecutive drought variations in Northwest China".ATMOSPHERIC RESEARCH 304(2024). |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
