DOI: 10.1002/jgrd.50175
论文题名: Observations of the atmospheric boundary layer height under marine upstream flow conditions at a coastal site
作者: Peña A. ; Gryning S.-E. ; Hahmann A.N.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 4 起始页码: 1924
结束页码: 1940
语种: 英语
英文关键词: boundary layer height
; ceilometer
; coastal
; lidar
; WRF
Scopus关键词: Aerosols
; Backscattering
; Coastal engineering
; Computer simulation
; Meteorological instruments
; Sensors
; Weather forecasting
; Backscatter profiles
; Backscatter signals
; Boundary layer heights
; ceilometer
; coastal
; Weather research and forecasting models
; Wind speed and directions
; WRF
; Optical radar
; aerosol
; backscatter
; boundary layer
; coastal zone
; marine environment
; numerical model
; observational method
; seasonal variation
; streamflow
; wind velocity
英文摘要: We investigate several lidar-type instruments and methodologies for boundary layer height (BLH) estimation during 2 days at a coastal site for winds that experience marine upstream flow conditions. Wavelet and profile fitting procedures on the aerosol backscatter signals from a ceilometer and an aerosol lidar reveal similar BLHs, but their agreement depends on the presence of clouds and the instrument signal, among others. BLHs derived by a threshold on the carrier-to-noise profiles of a wind lidar agree well with those derived by using a threshold on the backscatter profile of the ceilometer and are used as reference for a 10 day BLH intercomparison. Furthermore, the BLHs from the aerosol analysis are comparable to those derived from wind speed and direction profiles from combined mast/wind lidar measurements. The BLH derived from simulations performed with the Weather Research and Forecasting (WRF) model shows similar behavior compared to the lidar observations. The seasonal diurnal variation of the BLH for 2010, derived from the wind lidar and ceilometer thresholds, shows similar BLHs but generally higher values compared to that from WRF. No clear BLH diurnal variation is observed neither from the observations nor from the WRF model outputs, except in summer for the latter. Both observations and WRF model simulations reveal higher BLHs during autumn compared to spring time. These BLHs are used to evaluate the intra-annual variation and show high peaks in September, November, and February. Key Points Estimation of PBL height using several type of sensors and methodologiesSimilar PBL heights from instruments and WRF for 10 test cases/daysDiurnal and seasonal variations of PBL heights are similar from sensors and WRF © 2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63901
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: DTU Wind Energy, Risø Campus, Technical University of Denmark, Frederiksborgvej, 399, 4000, Denmark
Recommended Citation:
Peña A.,Gryning S.-E.,Hahmann A.N.. Observations of the atmospheric boundary layer height under marine upstream flow conditions at a coastal site[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(4)