Global statistics of liquid water content and effective number concentration of water clouds over ocean derived from combined CALIPSO and MODIS measurements
نویسنده
چکیده
This study presents an empirical relation that links the volume extinction coefficients of water clouds, the layer integrated depolarization ratios measured by lidar, and the effective radii of water clouds derived from collocated passive sensor observations. Based on Monte Carlo simulations of CALIPSO lidar observations, this method combines the cloud effective radius reported by MODIS with the lidar depolarization ratios measured by CALIPSO to estimate both the liquid water content and the effective number concentration of water clouds. The method is applied to collocated CALIPSO and MODIS measurements obtained during July and October of 2006, and January 2007. Global statistics of the cloud liquid water content and effective number concentration are presented.
منابع مشابه
Liquid water content and effective number density
Global statistics of liquid water content and effective number density of water clouds over ocean derived from combined CALIPSO and MODIS measurements Y. Hu, M. Vaughan, C. McClain, M. Behrenfeld, H. Maring, D. Anderson, S. Sun-Mack, D. Flittner, J. Huang, B. Wielicki, P. Minnis, C. Weimer, C. Trepte, and R. Kuehn NASA Langley Research Center, Hampton, VA, USA NASA Goddard Space Flight Center, ...
متن کاملA Near-Global Climatology of Single-Layer and Overlapped Clouds and Their Optical Properties Retrieved from Terra/MODIS Data Using a New Algorithm
Cloud overlapping has been a major issue in climate studies owing to a lack of reliable information available over both oceans and land. This study presents the first near-global retrieval and analysis of single-layer and overlapped cloud vertical structures and their optical properties retrieved by applying a new method to the Moderate Resolution Imaging Spectroradiometer (MODIS) data. Taking ...
متن کاملAssessment of MODIS cloud effective radius and optical thickness retrievals over the Southeast Pacific with VOCALS-REx in situ measurements
[1] Cloud microphysical observations collected in situ during the VAMOS Ocean-Cloud-Atmosphere-Land Study Regional Experiment within the Chile-Peru stratocumulus cloud deck during October–November 2008 were used to assess MODIS Level 2 cloud property retrievals. The in situ aircraft-derived cloud property values were constructed from the drop size distributions measured by the Cloud Droplet Pro...
متن کاملWater vapor retrievals using Moderate Resolution Imaging Spectroradiometer (MODIS) near-infrared channels
[1] At present, two Moderate Resolution Imaging Spectroradiometer (MODIS) instruments on board the NASA Terra and Aqua Spacecraft platforms are operational for global remote sensing of the land, ocean, and atmosphere. In this paper, we describe an algorithm for water vapor derivations using several MODIS near-IR channels. The derivations are made over areas that have reflective surfaces in the ...
متن کاملCloud properties and radiative forcing over the maritime storm tracks of the Southern Ocean and North Atlantic derived from ATrain
[1] Annually averaged cloud properties, cloud radiative effects, and cloud radiative heating from 20° × 20° latitude‐longitude regions in the Southern Ocean (50°S, 135°W) and the North Atlantic (55°N, 25°W) are compared using quantities derived from measurements collected by active and passive remote sensors in the NASA A‐Train. The algorithm suite used to infer cloud properties along the nadir...
متن کامل