Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-19-0177.1 |
Contributions of Convective and Orographic Gravity Waves to the Brewer-Dobson Circulation Estimated from NCEP CFSR | |
Kang, Min-Jee1; Chun, Hye-Yeong1; Song, Byeong-Gwon2 | |
2020-03-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2020 |
卷号 | 77期号:3页码:981-1000 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea |
英文摘要 | Contributions of convective gravity waves (CGWs) and orographic gravity waves (OGWs) to the Brewer-Dobson circulation (BDC) are examined and compared to those from resolved waves. OGW drag (OGWD) is provided by NCEP Climate Forecast System Reanalysis (CFSR), while CGW drag (CGWD) is obtained from an offline calculation of a physically based CGW parameterization with convective heating and background data provided by CFSR. CGWD contributes to the shallow branch of the BDC regardless of the season, while OGWD contributes to both the shallow and deep branches except for the summertime, when OGWs hardly propagate into the stratosphere. At 70 hPa, the annual-mean tropical upward mass fluxes from Eliassen-Palm flux divergence (EPD), OGWD, and CGWD are 68%, 7%, and 4% of the total mass flux, respectively. The tropical upward mass flux at 70 hPa shows an increasing trend during the time period from 1979 to 1998, with 28%, 18%, and 6% of the trend driven by EPD, OGWD, and CGWD, respectively. The width of the turnaround latitudes tends to narrow for the streamfunctions induced by OGWD and CGWD but tends to widen for that induced by EPD. The contributions of GWD from MERRA (MERRA-2) to the climatology and long-term trend of the BDC are 7% (7%) and 13% (4%), respectively, somewhat smaller than the contributions of CGWD plus OGWD, which are estimated from CFSR to be 12% and 20%, respectively. |
英文关键词 | Convection Gravity waves Planetary waves Stratospheric circulation Reanalysis data |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000518040000002 |
WOS关键词 | GENERAL-CIRCULATION ; STRATOSPHERIC AIR ; MOMENTUM FLUX ; PART I ; PARAMETERIZATION ; TROPOSPHERE ; EXCHANGE ; CLIMATE ; DRAG ; AGE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/280309 |
专题 | 地球科学 |
作者单位 | 1.Yonsei Univ, Dept Atmospher Sci, Seoul, South Korea; 2.Korea Polar Res Inst, Incheon, South Korea |
推荐引用方式 GB/T 7714 | Kang, Min-Jee,Chun, Hye-Yeong,Song, Byeong-Gwon. Contributions of Convective and Orographic Gravity Waves to the Brewer-Dobson Circulation Estimated from NCEP CFSR[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2020,77(3):981-1000. |
APA | Kang, Min-Jee,Chun, Hye-Yeong,&Song, Byeong-Gwon.(2020).Contributions of Convective and Orographic Gravity Waves to the Brewer-Dobson Circulation Estimated from NCEP CFSR.JOURNAL OF THE ATMOSPHERIC SCIENCES,77(3),981-1000. |
MLA | Kang, Min-Jee,et al."Contributions of Convective and Orographic Gravity Waves to the Brewer-Dobson Circulation Estimated from NCEP CFSR".JOURNAL OF THE ATMOSPHERIC SCIENCES 77.3(2020):981-1000. |
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