DOI: 10.1002/2017MS000924
Scopus记录号: 2-s2.0-85017527486
论文题名: Skill of ship-following large-eddy simulations in reproducing MAGIC observations across the northeast Pacific stratocumulus to cumulus transition region
作者: McGibbon J ; , Bretherton C ; S
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2017
卷: 9, 期: 2 起始页码: 810
结束页码: 831
语种: 英语
英文关键词: Boundary layers
; Clouds
; Heat flux
; Marine radar
; Meteorological instruments
; Precipitation (meteorology)
; Radar
; Radar measurement
; Ship instruments
; Ships
; Boundary layer structure
; Cumulus
; Liquid water paths
; Marine boundary layers
; Meteorological condition
; Near surface air temperature
; Stratocumulus
; Transition regions
; Large eddy simulation
; air temperature
; boundary layer
; cloud cover
; container ship
; diurnal variation
; large eddy simulation
; precipitation (climatology)
; sensible heat flux
; stratocumulus
; California
; Hawaii [United States]
; Hawaiian Islands
; Honolulu
; Los Angeles [California]
; Oahu
; Pacific Ocean
; Pacific Ocean (Northeast)
; United States
英文摘要: During the Marine ARM GPCI Investigation of Clouds (MAGIC) in October 2011 to September 2012, a container ship making periodic cruises between Los Angeles, CA, and Honolulu, HI, was instrumented with surface meteorological, aerosol and radiation instruments, a cloud radar and ceilometer, and radiosondes. Here large-eddy simulation (LES) is performed in a ship-following frame of reference for 13 four day transects from the MAGIC field campaign. The goal is to assess if LES can skillfully simulate the broad range of observed cloud characteristics and boundary layer structure across the subtropical stratocumulus to cumulus transition region sampled during different seasons and meteorological conditions. Results from Leg 15A, which sampled a particularly well-defined stratocumulus to cumulus transition, demonstrate the approach. The LES reproduces the observed timing of decoupling and transition from stratocumulus to cumulus and matches the observed evolution of boundary layer structure, cloud fraction, liquid water path, and precipitation statistics remarkably well. Considering the simulations of all 13 cruises, the LES skillfully simulates the mean diurnal variation of key measured quantities, including liquid water path (LWP), cloud fraction, measures of decoupling, and cloud radar-derived precipitation. The daily mean quantities are well represented, and daily mean LWP and cloud fraction show the expected correlation with estimated inversion strength. There is a −0.6 K low bias in LES near-surface air temperature that results in a high bias of 5.6 W m−2 in sensible heat flux (SHF). Overall, these results build confidence in the ability of LES to represent the northeast Pacific stratocumulus to trade cumulus transition region. © 2017. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75774
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
There are no files associated with this item.
作者单位: Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States
Recommended Citation:
McGibbon J,, Bretherton C,S. Skill of ship-following large-eddy simulations in reproducing MAGIC observations across the northeast Pacific stratocumulus to cumulus transition region[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(2)