Impacts of boundary layer turbulence and land surface process parameterizations on simulated sea breeze characteristics
- 作者：J.-F. MiaoK. WyserD. ChenH. Ritchie
- 会议时间：2011-11-01
- 关键词：Atmospheric composition and structure Biosphere-atmosphere interactions ; Evolution of the atmosphere) – Meteorology and atmospheric dynamics (Mesoscale meteorology ; Turbulence)
- 作者单位：J.-F. Miao(Key Laboratory of Meteorological Disaster of Ministry of Education,and College of Atmospheric Sciences,NanjingUniversity of Information Science and Technology,219 Ningliu Road,Nanjing 210044,China)K. Wyser(Rossby Centre,Swedish Meteorological and Hydrological Institute (SMHI),60176 Norrk¨oping,Sweden)D. Chen(Department of Earth Sciences,University of Gothenburg,P.O. Box 460,40530 Gothenburg,Sweden)H. Ritchie(Department of Oceanography,Dalhousie University,1355 Oxford Street,Halifax,NS,B3H 4J1,Canada 5Meteorological Research Division,Environment Canada,45 Alderney Drive,Dartmouth,NS B2Y 2N6,Canada)
- 母体文献：2011年第二十八届中国气象学会年会论文集
- 会议名称：2011年第二十八届中国气象学会年会
- 会议地点：厦门
- 主办单位：中国气象学会
- 语种：chi
- 分类号：P4;S1
摘要
This paper investigates the sensitivity of sea breeze (SB) simulations to combinations of boundary-layer turbulence and land-surface process parameterizations implemented in the MM5 mesoscale meteorological mode for an observed SB case over the Swedish west coast. Various combinations from four different planetary boundary layer (PBL) schemes [Blackadar, Gayno-Seaman (GS), Eta, MRF], and two land surface model (LSM) schemes (SLAB, Noah) with different complexity are designed to simulate a typical SB case over the Swedish west coast. The simulations are conducted using two-way interactively nested grids. Simulated 10-m winds are compared against observed nearsurface wind data from the G ¨ OTE2001 campaign to examine the diurnal cycle of wind direction and speed for SB timing. The SB (vertical) circulation is also compared in the different experiments. The results show that the different combinations of PBL and LSM parameterization schemes result in different SB timing and vertical circulation characteristics. All experiments predict a delayed SB. The vertical component of the SB circulation varies in the experiments, among which the GS PBL scheme produces the strongest SB circulation. Evident differences between the SLAB and Noah LSMs are also found, especially in maximum of updraft and downdraft velocities of the SB vertical circulation. The results have significant implications for convective initiation, air quality studies and other environmental problems in coastal areas.