globalchange  > 气候减缓与适应
DOI: 10.1002/2017JD027969
Scopus记录号: 2-s2.0-85044481865
论文题名:
Modeling the TTL at Continental Scale for a Wet Season: An Evaluation of the BRAMS Mesoscale Model Using TRO-Pico Campaign, and Measurements From Airborne and Spaceborne Sensors
作者: Behera A.K.; Rivière E.D.; Marécal V.; Rysman J.-F.; Chantal C.; Sèze G.; Amarouche N.; Ghysels M.; Khaykin S.M.; Pommereau J.-P.; Held G.; Burgalat J.; Durry G.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:5
起始页码: 2491
结束页码: 2508
语种: 英语
英文关键词: BRAMS ; inertia-gravity waves ; mesoscale modeling ; stratospheric overshooting convection ; tropical tropopause layer ; water vapor budget
Scopus关键词: airborne sensor ; atmospheric convection ; atmospheric modeling ; Aura (satellite) ; GOES ; gravity wave ; measurement method ; mesoscale eddy ; microwave limb sounder ; stratosphere ; tropopause ; water vapor ; wet season ; Brazil
英文摘要: In order to better understand the water vapor (WV) intrusion into the tropical stratosphere, a mesoscale simulation of the tropical tropopause layer using the BRAMS (Brazilian version of Regional Atmospheric Modeling System (RAMS)) model is evaluated for a wet season. This simulation with a horizontal grid point resolution of 20 km × 20 km cannot resolve the stratospheric overshooting convection (SOC). Its ability to reproduce other key parameters playing a role in the stratospheric WV abundance is investigated using the balloon-borne TRO-Pico campaign measurements, the upper-air soundings over Brazil, and the satellite observations by Aura Microwave Limb Sounder, Microwave Humidity Sounder, and Geostationary Operational Environmental Satellite 12. The BRAMS exhibits a good ability in simulating temperature, cold-point, WV variability around the tropopause. However, the simulation is typically observed to be warmer by ∼2.0°C and wetter by ∼0.4 ppmv at the hygropause, which can be partly affiliated with the grid boundary nudging of the model by European Centre for Medium-Range Weather Forecasts operational analyses. The modeled cloud tops show a good correlation (maximum cross-correlation of ∼0.7) with Geostationary Operational Environmental Satellite 12. Furthermore, the overshooting cells detected by Microwave Humidity Sounder are observed at the locations, where 75% of the modeled cloud tops are higher than 11 km. Finally, the modeled inertia-gravity wave periodicity and wavelength are comparable with those deduced from the radio sounding measurements during TRO-Pico campaign. The good behavior of BRAMS confirms the SOC contribution in the WV abundance, and variability is of lesser importance than the large-scale processes. This simulation can be used as a reference run for upscaling the impact of SOC at a continental scale for future studies. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114291
Appears in Collections:气候减缓与适应

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作者单位: GSMA, UMR CNRS 7331, UFR Sciences Exactes et Naturelles, Reims, France; CNRM, UMR3589, Météo-France, CNRS, Toulouse, France; LMD/IPSL, CNRS UMR 8539, École Polytechnique, Université Paris Saclay, ENS, PSL Research University, Sorbonne Universités, UPMC Université Paris 06, CNRS, Palaiseau, France; LMD, IPSL, UPMC, CNRS, École Polytechnique, ENS, Paris, France; Division technique de l'INSU, Place Aristide Briand, Meudon, France; LATMOS/IPSL, UVSQ Université Paris-Saclay, UPMC University Paris 06, CNRS, Guyancourt, France; Instituto de Pesquisas Meteorológicas, Universidade Estadual Paulista, Bauru, Brazil

Recommended Citation:
Behera A.K.,Rivière E.D.,Marécal V.,et al. Modeling the TTL at Continental Scale for a Wet Season: An Evaluation of the BRAMS Mesoscale Model Using TRO-Pico Campaign, and Measurements From Airborne and Spaceborne Sensors[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(5)
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