干旱区生态环境知识资源中心(Arid): Scaling artificial heat islands to enhance precipitation in the United Arab Emirates

Arid

DOI	10.5194/esd-15-109-2024
	Scaling artificial heat islands to enhance precipitation in the United Arab Emirates
	Branch, Oliver; Jach, Lisa; Schwitalla, Thomas; Warrach-Sagi, Kirsten; Wulfmeyer, Volker
通讯作者	Branch, O
来源期刊	EARTH SYSTEM DYNAMICS
ISSN	2190-4979
EISSN	2190-4987
出版年	2024
卷号	15 期号:1 页码:109-129
英文摘要	Potential for regional climate engineering is gaining interest as a means of solving regional environmental problems like water scarcity and high temperatures. In the hyper-arid United Arab Emirates (UAE), water scarcity is reaching a crisis point due to high consumption and over-extraction and is being exacerbated by climate change. To counteract this problem, the UAE has conducted cloud-seeding operations and intensive desalination for many years but is now considering other means of increasing water resources. Very large artificial black surfaces (ABSs), made of black mesh, black-painted, or solar photovoltaic (PV) panels have been proposed as a means of enhancing convective precipitation via surface heating and amplification of vertical motion. Under the influence of the daily UAE sea breeze, this can lead to convection initiation under the right conditions. Currently it is not known how strong this rainfall enhancement would be or what scale of black surface would need to be employed. This study simulates the impacts at different ABS scales using the WRF-Noah-MP model chain and investigates impacts on precipitation quantities and underlying convective processes. Simulations of five square ABSs of 10, 20, 30, 40, and 50km sizes were made on four 1d cases, each for a period of 24h. These were compared with a Control model run, with no land use change, to quantify impacts. The ABSs themselves were simulated by altering land cover static data and prescribing a unique set of land surface parameters like albedo and roughness length. On all 4d, rainfall is enhanced by low-albedo surfaces of 20km or larger, primarily through a reduction of convection inhibition and production of convergence lines and buoyant updrafts. The 10km square ABS had very little impact. From 20km upwards there is a strong scale dependency, with ABS size influencing the strength of convective processes and volume of rainfall. In terms of rainfall increases, 20km produces a mean rainfall increase over the Control simulation of 571616 m(3) d(-1), with the other sizes as follows: 30 km (similar to 1 million m(3) d(-1)), 40 km (similar to 1.5 million m(3) d(-1)), and 50 km (similar to 2.3 million m(3) d(-1)). If we assume that such rainfall events happen only on 10 d in a year, this would equate to respective annual water supplies for >31000, >50000, >79000, and >125000 extra people yr(-1) at UAE per capita consumption rates. Thus, artificial heat islands made from black panels or solar PV offer a means of enhancing rainfall in arid regions like the UAE and should be made a high priority for further research.
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001281354000001
WOS关键词	PART I ; MODEL ; CLIMATE ; SEA ; TEMPERATURE ; WEATHER ; IMPACT ; PLANTATIONS ; CIRCULATION ; INITIATION
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403324
推荐引用方式 GB/T 7714	Branch, Oliver,Jach, Lisa,Schwitalla, Thomas,et al. Scaling artificial heat islands to enhance precipitation in the United Arab Emirates[J],2024,15(1):109-129.
APA	Branch, Oliver,Jach, Lisa,Schwitalla, Thomas,Warrach-Sagi, Kirsten,&Wulfmeyer, Volker.(2024).Scaling artificial heat islands to enhance precipitation in the United Arab Emirates.EARTH SYSTEM DYNAMICS,15(1),109-129.
MLA	Branch, Oliver,et al."Scaling artificial heat islands to enhance precipitation in the United Arab Emirates".EARTH SYSTEM DYNAMICS 15.1(2024):109-129.