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On trends and possible artifacts in global ocean cloud cover between 1952-1995
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ABSTRACT
Synoptic surface cloud observations are used to examine interdecadal variability in global ocean cloud cover between 1952 and 1995. Global mean total cloud cover over the ocean is observed to increase by 1.9% (sky cover) between 1952 and 1995. Global mean low cloud cover over the ocean is observed to increase by 3.6% between 1952 and 1995. Trends in zonal mean total and low cloud cover in 10 deg-latitude bands between 40 degS and 60N are all positive, and trends in the Southern Hemisphere and Tropics are generally as large or larger than trends in the midlatitude Northern ...
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Estimating cloud cover.
; ...this activity was to help students understand the percentage of cloud cover and make more accurate cloud cover observations. Students estimated the percentage of cloud cover represented by simulated clouds and assigned a cloud cover classification...
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Measuring Cloud Cover and Brightness Temperature with a Ground-Based Thermal Infrared Camera
; ...without the need for any external data, cloud cover can be retrieved both day and night over...clear sky temperatures are estimated for cloud cover up to 80%. During periods of 50% cloud cover or more the cloud-base brightness temperatures...
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A Simple Method for the Assessment of the Cloud Cover State in High-Latitude Regions by a Ground-Based Digital Camera
; ...usually require reliable information on cloud cover as input in order to produce reliable...between the sky cover amount and diffuse cloud cover effect, which is of importance in radiative...the earth's surface, information on cloud cover state is also required for radiative...
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Cloud Cover over the South Pole from Visual Observations, Satellite Retrievals, and Surface-Based Infrared Radiation Measurements
; ABSTRACT Estimates of cloud cover over the South Pole are presented...ISCCP^). The seasonal cycle of cloud cover is found to range from 45%-50...sup -2^ for net radiation. The cloud cover datasets are intercompared during...
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NASA Study Improves Ability to Predict Aerosols Effect on Cloud Cover
; ...of vegetation and forests, influence cloud cover and ultimately affect climate. The study...whether aerosols will increase or decrease cloud cover. We connected the dots to draw a critical...particles have increased and decreased cloud cover in different places and times, said...
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A Survey of Changes in Cloud Cover and Cloud Types over Land from Surface Observations, 1971-96
; ...synoptic reports were analyzed for total cloud cover and the amounts of nine different cloud...night separately. Time series of total-cloud-cover anomalies for individual continents...ENSO. The zonal average trends of total cloud cover are positive in the Arctic winter and...
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A prognostic parameterization for the subgrid-scale variability of water vapor and clouds in large-scale models and its use to diagnose cloud cover
; ...in the spirit of statistically based cloud cover parameterizations. High-resolution cloud-resolvi...parameterization is shown to reduce cloud cover biases almost globally, with a marked...assumption concerning the fractional cloud cover in each grid cell, assuming total cover...
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Heavy cloud cover is light on rain
; Storm Team 4 Heavy cloud cover is light on rain By JIM OTT Today...consecutive day with an extensive cloud cover, giving the sky an appearance more...the afternoon temperatures, but a cloud cover also keeps the nighttime temperatures...
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Effect of Cloud Cover on UVB Exposure Under Tree Canopies: Will Climate Change Affect UVB Exposure?
; ABSTRACT The effect of cloud cover on the amount of solar UV radiation...irradiance under skies with 50% or less cloud cover was not remarkably different from...canopies under skies with 50% or less cloud cover was nearly equivalent to that for...
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Impact of Cloud Cover on Solar Radiative Biases in Deep Convective Regimes
; ...certain characteristics such as total cloud cover are systematically controlled, has hindered...The bias is an asymmetrical function of cloud cover with a maximum attained at cirrus anvil cloud cover of approximately 30%-40%. With a cloud...
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