contributor author | Asano, Shoji | |
contributor author | Shiobara, Masataka | |
contributor author | Uchiyama, Akihiro | |
date accessioned | 2017-06-09T14:33:27Z | |
date available | 2017-06-09T14:33:27Z | |
date copyright | 1995/10/01 | |
date issued | 1995 | |
identifier issn | 0022-4928 | |
identifier other | ams-21599.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4157955 | |
description abstract | A new method is proposed to retrieve various cloud physical parameters of water clouds from the solar-flux reflectances at four wavelengths measured by using the airborne Multi-channel Cloud Pyranometer (MCP) system. The MCP system was designed to measure the spectral reflectances at nine wavelengths in the visible and near-infrared region. The estimation procedure assumes a locally plane-parallel and vertically homogeneous water-cloud layer with monomodal particle size distributions of a fixed width. The cloud optical thickness τ500 and the effective particle radius re, of the water-cloud layer can be simultaneously retrieved from the MCP reflectances measured at the visible channel of ?=500 nm and at the near-infrared channel of ?=1650 nm. Under the assumption that cloud pressure height is known, the cloud liquid water content (LWC) can then be retrieved from the MCP reflectance at the oxygen absorption-band channel cantered at ?=760 nm. Finally, the in-cloud water vapor amount uH2O can be estimated from the MCP reflectance at the water vapor absorption-band channel centered at ?=938 nm. Using these directly retrieved parameters, we can estimate byproduct parameters such as integrated liquid water path, cloud particle concentration, and geometrical thickness of the homogeneous cloud layer. A reliably applicable range of the present method was estimated to be 1≤ on the other hand, coalescence might be dominant in thick clouds in the mature stage with precipitation. | |
publisher | American Meteorological Society | |
title | Estimation of Cloud Physical Parameters from Airborne Solar Spectral Reflectance Measurements for Stratocumulus Clouds | |
type | Journal Paper | |
journal volume | 52 | |
journal issue | 20 | |
journal title | Journal of the Atmospheric Sciences | |
identifier doi | 10.1175/1520-0469(1995)052<3556:EOCPPF>2.0.CO;2 | |
journal fristpage | 3556 | |
journal lastpage | 3576 | |
tree | Journal of the Atmospheric Sciences:;1995:;Volume( 052 ):;issue: 020 | |
contenttype | Fulltext | |