Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-7365-2017 |
Comparing parameterized versus measured microphysical properties of tropical convective cloud bases during the ACRIDICON-CHUVA campaign | |
Braga, Ramon Campos1; Rosenfeld, Daniel2; Weigel, Ralf3; Jurkat, Tina4; Andreae, Meinrat O.5,6,10; Wendisch, Manfred7; Poehlker, Mira L.5,6; Klimach, Thomas5,6; Poeschl, Ulrich5,6; Poehlker, Christopher5,6; Voigt, Christiane3,4; Mahnke, Christoph3; Borrmann, Stephan3; Albrecht, Rachel I.8; Molleker, Sergej9; Vila, Daniel A.1; Machado, Luiz A. T.1; Artaxo, Paulo11 | |
2017-06-20 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | Brazil; Israel; Germany; USA |
英文摘要 | The objective of this study is to validate parameterizations that were recently developed for satellite retrievals of cloud condensation nuclei supersaturation spectra, N-CCN (S), at cloud base alongside more traditional parameterizations connecting N-CCN (S) with cloud base updrafts and drop concentrations. This was based on the HALO aircraft measurements during the ACRIDICON-CHUVA campaign over the Amazon region, which took place in September 2014. The properties of convective clouds were measured with a cloud combination probe (CCP), a cloud and aerosol spectrometer (CAS-DPOL), and a CCN counter onboard the HALO aircraft. An intercomparison of the cloud drop size distributions (DSDs) and the cloud water content (CWC) derived from the different instruments generally shows good agreement within the instrumental uncertainties. To this end, the directly measured cloud drop concentrations (N-d) near cloud base were compared with inferred values based on the measured cloud base updraft velocity (W-b) and N-CCN (S) spectra. The measurements of N-d at cloud base were also compared with drop concentrations (N-a) derived on the basis of an adiabatic assumption and obtained from the vertical evolution of cloud drop effective radius (r(e)) above cloud base. The measurements of N-CCN (S) and W-b reproduced the observed N-d within the measurements uncertainties when the old (1959) Twomey's parameterization was used. The agreement between the measured and calculated N-d was only within a factor of 2 with attempts to use cloud base S, as obtained from the measured W-b, N-d, and N-CCN (S). This underscores the yet unresolved challenge of aircraft measurements of S in clouds. Importantly, the vertical evolution of r(e) with height reproduced the observation-based nearly adiabatic cloud base drop concentrations, N-a. The combination of these results provides aircraft observational support for the various components of the satellite-retrieved methodology that was recently developed to retrieve N-CCN (S) under the base of convective clouds. This parameterization can now be applied with the proper qualifications to cloud simulations and satellite retrievals. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403917900004 |
WOS关键词 | IN-SITU MEASUREMENTS ; DROPLET PROBE CDP ; CONDENSATION NUCLEI ; SIZE DISTRIBUTION ; RAIN CLOUDS ; AEROSOL ; CCN ; PARTICLE ; AMAZON ; CALIBRATION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28344 |
专题 | 地球科学 |
作者单位 | 1.Inst Nacl Pesquisas Espaciais, Ctr Previsao Tempo & Estudos Climat, Cachoeira Paulista, Brazil; 2.Hebrew Univ Jerusalem, Inst Earth Sci, Jerusalem, Israel; 3.Johannes Gutenberg Univ Mainz, Inst Phys Atmosphare, Mainz, Germany; 4.Deutsch Zentrum Luft & Raumfahrt DLR, Inst Phys Atmosphare, Oberpfaffenhofen, Germany; 5.Max Planck Inst Chem, Multiphase Chem Dept, D-55020 Mainz, Germany; 6.Max Planck Inst Chem, Biogeochem Dept, D-55020 Mainz, Germany; 7.Univ Leipzig, LIM, Stephanstr 3, D-04103 Leipzig, Germany; 8.Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Sao Paulo, Brazil; 9.Max Planck Inst Chem MPI, Particle Chem Dept, Mainz, Germany; 10.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92037 USA; 11.Univ Sao Paulo, Inst Fis, Sao Paulo, Brazil |
推荐引用方式 GB/T 7714 | Braga, Ramon Campos,Rosenfeld, Daniel,Weigel, Ralf,et al. Comparing parameterized versus measured microphysical properties of tropical convective cloud bases during the ACRIDICON-CHUVA campaign[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(12). |
APA | Braga, Ramon Campos.,Rosenfeld, Daniel.,Weigel, Ralf.,Jurkat, Tina.,Andreae, Meinrat O..,...&Artaxo, Paulo.(2017).Comparing parameterized versus measured microphysical properties of tropical convective cloud bases during the ACRIDICON-CHUVA campaign.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(12). |
MLA | Braga, Ramon Campos,et al."Comparing parameterized versus measured microphysical properties of tropical convective cloud bases during the ACRIDICON-CHUVA campaign".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.12(2017). |
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