Deep moist atmospheric convection in a subkilometer global simulation

被引：163

作者：

Miyamoto, Yoshiaki ^{[1
]}

Kajikawa, Yoshiyuki ^{[1
]}

Yoshida, Ryuji ^{[1
]}

Yamaura, Tsuyoshi ^{[1
]}

Yashiro, Hisashi ^{[1
,2
]}

Tomita, Hirofumi ^{[1
,2
]}

机构：

[1] RIKEN, Adv Inst Computat Sci, Kobe, Hyogo 6500047, Japan

[2] Japan Agcy Marine Earth Sci & Technol, Res Inst Global Change, Yokohama, Kanagawa, Japan

来源：

GEOPHYSICAL RESEARCH LETTERS | 2013年 / 40卷 / 18期

关键词：

deep convection; global atmospheric model; MULTISCALE INTERACTIONS; LIFE-CYCLE; CLOUD; MODEL; RESOLUTION; PRECIPITATION; SCALE; GATE;

D O I：

10.1002/grl.50944

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Deep moist atmospheric convection is a key element of the weather and climate system for transporting mass, momentum, and thermal energy. It has been challenging to simulate convection realistically in global atmospheric models because of the large gap in spatial scales between convection (10(0)km) and global motions (10(4)km). We conducted the first ever subkilometer global simulation and described the features of convection. Through a series of grid-refinement resolution testing, we found that an essential change for convection statistics occurred around 2 km grid spacing. The convection structure, number of convective cells, and distance to the nearest convective cell dramatically changed at this resolution. The convection core was resolved using multiple grids in simulations with grid spacings less than 2.0 km.

引用

页码：4922 / 4926

页数：5

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