DOI: 10.1016/j.atmosenv.2017.04.023
Scopus记录号: 2-s2.0-85018661517
论文题名: Heating rate profiles and radiative forcing due to a dust storm in the Western Mediterranean using satellite observations
作者: Peris-Ferrús C ; , Gómez-Amo J ; L ; , Marcos C ; , Freile-Aranda M ; D ; , Utrillas M ; P ; , Martínez-Lozano J ; A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 160 起始页码: 142
结束页码: 153
语种: 英语
英文关键词: Dust properties
; Dust storm
; Heating rate profiles
; Radiative forcing
Scopus关键词: Aerosols
; Atmospheric aerosols
; Atmospheric radiation
; Atmospheric temperature
; Heating rate
; Optical properties
; Radiometers
; Refractive index
; Satellite imagery
; Solar radiation
; Storms
; Surface properties
; Aerosol radiative forcing
; Dust optical properties
; Dust properties
; Dust storm
; Optical properties of aerosols
; Radiative forcings
; Radiative transfer model
; Rate profiles
; Dust
; aerosol
; albedo
; CALIPSO
; dust storm
; heating
; Mediterranean environment
; MODIS
; optical depth
; radiative forcing
; radiative transfer
; satellite altimetry
; size distribution
; zenith angle
; absorption
; aerosol
; air temperature
; albedo
; altitude
; Article
; atmosphere
; cooling
; data base
; dust
; electromagnetic radiation
; heating
; mineral dust
; optical depth
; plume
; priority journal
; radiative forcing
; refraction index
; simulation
; surface property
; temperature
; warming
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: We analyze the vertically-resolved radiative impact due to a dust storm in the Western Mediterranean. The dust plume travels around 3–5 km altitude and the aerosol optical depth derived by MODIS at 550 nm ranges from 0.33 to 0.52 at the overpass time (13:05 UT). The aerosol radiative forcing (ARF), forcing efficiency (FE) and heating rate profile (AHR) are determined throughout the dust trajectory in shortwave (SW) and longwave (LW) ranges. To do this, we integrate different satellite observations (CALIPSO and MODIS) and detailed radiative transfer modeling. The combined (SW + LW) effect of the dust event induces a net cooling in the studied region. On average, the FE at 22.4° solar zenith angle is −190.3 W m−2 and −38.1 W m−2, at surface and TOA, respectively. The corresponding LW/SW offset is 14% and 38% at surface and TOA, respectively. Our results at TOA are sensitive to the surface albedo in the SW and surface temperature in the LW. The absolute value of FE decrease (increase) in the SW (LW) with the surface albedo, resulting in an increasing LW/SW offset, up to 76%. The AHR profiles show a net warming within the dust layer, with a maximum value of 3.3 Kd-1. The ARF, FE and AHR are also highly sensitive to the dust optical properties in SW and LW. We evaluate this sensitivity by comparing the results obtained using two set of dust properties as input in our simulations: a) the prescribed dust model by Optical Properties of Aerosols and Clouds (OPAC) and; b) the dust optical properties derived from measurements of the size distribution and refractive index. Experimentally derived dust properties present larger SSA and asymmetry parameter in the SW than OPAC dust. Conversely, OPAC dust presents higher AOD in the LW range. These parameters drive the FE and AHR sensitivities in the SW and LW ranges, respectively. Therefore, when measured dust properties are used in our simulations: the ARF in the LW substantially reduces at surface and TOA (up to 57%); the absolute value of SW ARF is reduced by 15% at surface and an enhancement of 31% is observed at TOA; the AHR present less warming in the entire profile with deviations up to 53% within the dust layer, with respect to the results obtained using OPAC. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82660
Appears in Collections: 气候变化事实与影响
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作者单位: Dpt. Earth Physics and Thermodynamics, University of Valencia, Burjassot, Spain
Recommended Citation:
Peris-Ferrús C,, Gómez-Amo J,L,et al. Heating rate profiles and radiative forcing due to a dust storm in the Western Mediterranean using satellite observations[J]. Atmospheric Environment,2017-01-01,160