Process-Oriented Compound Long-Duration Dry and Hot Events in China: Atmospheric Conditions, Moisture, and Heat Budget Analyses

环境科学 气候学 水分 大气科学 持续时间(音乐) 中国 气象学 地质学 地理 文学类 艺术 考古
作者
Yi Yang,Jianping Tang
出处
期刊:Journal of Climate [American Meteorological Society]
卷期号:37 (19): 5131-5151
标识
DOI:10.1175/jcli-d-23-0405.1
摘要

Abstract Summertime compound dry and hot events pose severe threats to agricultural production and human health, especially those with a long duration. Considering the joint evolution of such hazards in space and time, spatiotemporal compound long-duration dry and hot (SLDDH) events in China during 1961–2022 are identified with a process-oriented method. Here, we investigate the associated large-scale atmospheric circulation patterns and the physical processes causing their precipitation and temperature anomalies. In all regions of China, this persistent dry–hot compound extreme is accompanied by anomalous high pressure systems along with enhanced descending motion, increased net surface solar radiation, and decreased water vapor flux convergence. Moisture budget diagnosis shows that precipitation deficits during the SLDDH events are produced primarily by the suppressed vertical moisture advection associated with the dynamical contribution of anomalous subsidence, while the thermodynamic process due to the anomaly in atmospheric moisture content makes a small contribution. Horizontal temperature advection generally plays a negative role in sustaining SLDDH events, while it helps trigger the events in North China. In most regions, adiabatic warming due to abnormal subsidence plays a dominant role in determining the near-surface high temperatures during the long-lasting warm and dry periods, whereas diabatic heating has a cooling or small effect therein. However, in some northern areas such as North China and northern Xinjiang, hot extremes during SLDDH events arise from a combination of diabatic heating and adiabatic warming. This study thus quantifies and reveals the crucial factors leading to the severity of compound dry and hot events.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
颜云尔发布了新的文献求助10
刚刚
天天快乐应助tay采纳,获得10
1秒前
chen发布了新的文献求助10
2秒前
酷波er应助girl采纳,获得10
2秒前
2秒前
3秒前
猫南北完成签到,获得积分10
3秒前
江恋完成签到,获得积分10
6秒前
GGBOND发布了新的文献求助10
9秒前
11秒前
hhhblabla应助yyyyyyy111采纳,获得10
13秒前
哈哈发布了新的文献求助10
14秒前
19秒前
21秒前
背后初南完成签到,获得积分10
22秒前
神勇馒头完成签到,获得积分10
22秒前
GGBOND发布了新的文献求助10
23秒前
23秒前
24秒前
以戈完成签到,获得积分10
26秒前
28秒前
泡泡脑瓜发布了新的文献求助10
29秒前
358489228完成签到,获得积分10
29秒前
30秒前
xww发布了新的文献求助10
32秒前
33秒前
神勇馒头发布了新的文献求助10
36秒前
36秒前
chen完成签到,获得积分10
38秒前
cindywu发布了新的文献求助10
38秒前
贰叁发布了新的文献求助10
39秒前
40秒前
量子星尘发布了新的文献求助10
41秒前
42秒前
Lu发布了新的文献求助10
44秒前
45秒前
泡泡脑瓜关注了科研通微信公众号
46秒前
丫丫丫完成签到,获得积分20
47秒前
无花果应助GGBOND采纳,获得10
47秒前
跳跃盼波完成签到,获得积分10
49秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989115
求助须知:如何正确求助?哪些是违规求助? 3531367
关于积分的说明 11253688
捐赠科研通 3269986
什么是DOI,文献DOI怎么找? 1804868
邀请新用户注册赠送积分活动 882078
科研通“疑难数据库(出版商)”最低求助积分说明 809105