气候变化领域集成服务门户(CCPortal): Uneven Warming Likely Contributed to Declining Near-Surface Wind Speeds in Northern China Between 1961 and 2016

CCPortal

DOI	10.1029/2020JD033637
	Uneven Warming Likely Contributed to Declining Near-Surface Wind Speeds in Northern China Between 1961 and 2016
	Zhang G.; Azorin-Molina C.; Chen D.; McVicar T.R.; Guijarro J.A.; Kong F.; Minola L.; Deng K.; Shi P.
发表日期	2021
ISSN	2169897X
卷号	126 期号:11
英文摘要	A decline in mean near-surface (10 m) wind speed has been widely reported for many land regions over recent decades, yet the underlying cause(s) remains uncertain. This study investigates changes in near-surface wind speed over northern China from 1961 to 2016, and analyzes the associated physical mechanisms using station observations, reanalysis products and model simulations from the Community Atmosphere Model version 5.1 (CAM5). The homogenized near-surface wind speed shows a significantly (p < 0.05) decline trend of −0.103 m s−1decade−1, which stabilized from the 1990s onwards. Similar negative trends are observed for all seasons, with the strongest trends occurring in the central and eastern parts of northern China. Fast warming has occurred at high-latitudes (i.e., >50°N) in recent decades, which has weakened the annual and seasonal meridional air temperature gradient (−0.33°C to −0.12°C dec−1, p < 0.05, except autumn) between these regions (50°–60°N, 75°–135°E) and the northern China zone (35°–45°N, 75°–135°E). This caused a significant (p < 0.05) decrease in annual and seasonal pressure gradient (−0.43 to −0.20 hPa dec−1) between the two zones, which contributed to the slowdown of winds. CAM5 simulations demonstrate that spatially uneven air temperature increases and near-surface wind speed decreases over northern China can be realistically reproduced using the so-called “all forcing” simulation, while the “natural only forcing” simulation fails to realistically simulate the uneven warming patterns and declines in near-surface wind speed over most of northern China, except for summer. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	declining near-surface wind speed; human activity; northern China; pressure gradient; uneven warming
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185184
作者单位	State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, China; Academy of Disaster Reduction and Emergency Management, Ministry of Emergency Management and Ministry of Education, Beijing Normal University, Beijing, China; Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden; Centro de Investigaciones sobre Desertificación, Consejo Superior de Investigaciones Científicas (CIDE-CSIC), Moncada, Valencia, Spain; CSIRO Land and Water, Canberra, ACT, Australia; Australian Research Council Centre of Excellence for Climate Extremes, Canberra, ACT, Australia; State Meteorological Agency (AEMET), Balearic Islands office, Palma, Spain; College of Humanities and Development Studies, China Agricultural University, Beijing, China; Key Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal University, Beijing, China
推荐引用方式 GB/T 7714	Zhang G.,Azorin-Molina C.,Chen D.,et al. Uneven Warming Likely Contributed to Declining Near-Surface Wind Speeds in Northern China Between 1961 and 2016[J],2021,126(11).
APA	Zhang G..,Azorin-Molina C..,Chen D..,McVicar T.R..,Guijarro J.A..,...&Shi P..(2021).Uneven Warming Likely Contributed to Declining Near-Surface Wind Speeds in Northern China Between 1961 and 2016.Journal of Geophysical Research: Atmospheres,126(11).
MLA	Zhang G.,et al."Uneven Warming Likely Contributed to Declining Near-Surface Wind Speeds in Northern China Between 1961 and 2016".Journal of Geophysical Research: Atmospheres 126.11(2021).