[1] In this paper we investigate the feasibility of determining cloud liquid water path from passive microwave measurements over sea ice. Simulations using a 32-stream plane-parallel microwave radiative transfer model indicate a consistent increase in brightness temperature attributable to cloud liquid water for conditions observed in the Arctic during the Surface Heat Budget of the Arctic (SHE...

Cloud liquid water path (LWP) is a crucial parameter for climate studies, especially for use in general circulation models. To provide a long-term, large-scale dataset of this important parameter, the Visible Infrared Solar Split-Window Technique (VISST) retrieval method is used to derive LWP over the Atmospheric Radiation Measurement (ARM) Climate Research Facility Southern Great Plains (SGP) ...

[1] We examine liquid water paths (LWPs) derived from ship-based microwave radiometer brightness temperature (Tb) measurements collected within southeastern Pacific stratocumulus at 20 S, 85 W in October 2001. The boundary layer was typically well mixed and overcast. Three gaseous absorption models and two liquid dielectric models are evaluated. Total differences in retrieved LWP attributable t...

The Active Tracer High-resolution Atmospheric Model (ATHAM) has been adopted to examine the aerosol indirect effect in contrasting clean and polluted cloudy boundary layers during the Second Aerosol Characterization Experiment (ACE-2). Model results are in good agreement with available in-situ observations, which provides confidence in the results of ATHAM. Sensitivity tests have been conducted...

[1] Because clouds play such a significant role in climate, understanding their responses to climatic temperature changes is essential to determining the overall impact of a given climate forcing. Cloud liquid water path (LWP) over tropical and midlatitude oceans has been observed to decrease with increasing cloud temperature. The presence of an ice sheet over the Arctic Ocean alters the energy...

A method for combining ground-based passive microwave radiometer retrievals of integrated liquid water (LWP), radar reflectivity profiles (Z ), and statistics of a cloud model is proposed for deriving cloud liquid water profiles (LWC). A dynamic cloud model is used to determine Z–LWC relations and their errors as functions of height above cloud base. The cloud model is also used to develop an L...

Here, liquid water path (LWP), cloud fraction, cloud top height, and cloud base height retrieved by a suite of A-train satellite instruments (the CPR aboard CloudSat, CALIOP aboard CALIPSO, and MODIS aboard Aqua) are compared to ship observations from research cruises made in 2001 and 2003–2007 into the stratus/stratocumulus deck over the southeast Pacific Ocean. It is found that CloudSat radar...

Aspects of the liquid water path (LWP) spatial probability distribution function (pdf) and power spectra in marine low cloud over the subtropical NE and SE Pacific Ocean are examined using daytime retrievals for two months of data from the Moderate Resolution Imaging Spectroradiometer (MODIS) on the NASA Terra satellite. It is shown that the pdf can be described to a good degree of accuracy usi...

in order to study the sensitivity of vegetative growth to water deficit stress of a late-maturing peach (prunus persica l. cv. elberta) under orchard conditions, an experiment was conducted as randomized complete-block design with three treatments and four repetitions in shahdiran commercial orchard in mashhad during 2011. three irrigation treatments including 360 (low stress), 180 (moderate st...

Abstract. The effects of aerosols on cloud microphysical properties are a large source uncertainty when assessing anthropogenic climate change. aerosol–cloud relationship is particularly unclear in high-latitude polar regions due to limited number observations. Cloud liquid water path (LWP) an important control radiative properties, the Arctic, where clouds play central role surface energy budg...