气候变化领域集成服务门户(CCPortal): A Baseline for Global Weather and Climate Simulations at 1 km Resolution

CCPortal

DOI	10.1029/2020MS002192
	A Baseline for Global Weather and Climate Simulations at 1 km Resolution
	Wedi N.P.; Polichtchouk I.; Dueben P.; Anantharaj V.G.; Bauer P.; Boussetta S.; Browne P.; Deconinck W.; Gaudin W.; Hadade I.; Hatfield S.; Iffrig O.; Lopez P.; Maciel P.; Mueller A.; Saarinen S.; Sandu I.; Quintino T.; Vitart F.
发表日期	2020
ISSN	19422466
卷号	12 期号:11
英文摘要	In an attempt to advance the understanding of the Earth's weather and climate by representing deep convection explicitly, we present a global, four-month simulation (November 2018 to February 2019) with ECMWF's hydrostatic Integrated Forecasting System (IFS) at an average grid spacing of 1.4 km. The impact of explicitly simulating deep convection on the atmospheric circulation and its variability is assessed by comparing the 1.4 km simulation to the equivalent well-tested and calibrated global simulations at 9 km grid spacing with and without parametrized deep convection. The explicit simulation of deep convection at 1.4 km results in a realistic large-scale circulation, better representation of convective storm activity, and stronger convective gravity wave activity when compared to the 9 km simulation with parametrized deep convection. Comparison of the 1.4 km simulation to the 9 km simulation without parametrized deep convection shows that switching off deep convection parametrization at a too coarse resolution (i.e., 9 km) generates too strong convective gravity waves. Based on the limited statistics available, improvements to the Madden-Julian Oscillation or tropical precipitation are not observed at 1.4 km, suggesting that other Earth system model components and/or their interaction are important for an accurate representation of these processes and may well need adjusting at deep convection resolving resolutions. Overall, the good agreement of the 1.4 km simulation with the 9 km simulation with parametrized deep convection is remarkable, despite one of the most fundamental parametrizations being turned off at 1.4 km resolution and despite no adjustments being made to the remaining parametrizations. ©2020. The Authors.
英文关键词	atmosphere; explicitly simulated convection; high performance computing; MJO; stratosphere; winter season
语种	英语
scopus关键词	Climatology; Earth (planet); Gravity waves; Atmospheric circulation; Climate simulation; Earth system model; Global simulation; Integrated forecasting systems; Large-scale circulation; Madden-Julian oscillation; Tropical precipitation; Natural convection; atmospheric circulation; atmospheric convection; climate change; climate modeling; gravity wave; Madden-Julian oscillation; precipitation (climatology); simulation; weather forecasting
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156584
作者单位	European Centre for Medium Range Weather Forecasts (ECMWF), Reading, United Kingdom; Oak Ridge National Laboratory, Oak Ridge, TN, United States; NVIDIA, Santa Clara, CA, United States
推荐引用方式 GB/T 7714	Wedi N.P.,Polichtchouk I.,Dueben P.,et al. A Baseline for Global Weather and Climate Simulations at 1 km Resolution[J],2020,12(11).
APA	Wedi N.P..,Polichtchouk I..,Dueben P..,Anantharaj V.G..,Bauer P..,...&Vitart F..(2020).A Baseline for Global Weather and Climate Simulations at 1 km Resolution.Journal of Advances in Modeling Earth Systems,12(11).
MLA	Wedi N.P.,et al."A Baseline for Global Weather and Climate Simulations at 1 km Resolution".Journal of Advances in Modeling Earth Systems 12.11(2020).