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COMPARISON OF GROUND TECHNIQUES USED TO ESTIMATE CLOUD COVER IN FLORIANÓPOLIS, SOUTHERN BRAZIL

COMPARISON OF GROUND TECHNIQUES USED TO ESTIMATE CLOUD COVER IN FLORIANÓPOLIS, SOUTHERN BRAZIL

... Figure 3 shows the relationship between diffuse and global irradiances incident on the earth’s surface (quantified by Kt and Kd indices, respectively) for different cloud cover conditions. Based on the ...

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Is there a trend in cirrus cloud cover due to aircraft traffic?

Is there a trend in cirrus cloud cover due to aircraft traffic?

... cirrus cloud cover have been estimated based on 16 years of data from ISCCP (International Satel- lite Cloud Climatology ...cirrus cloud cover due to aircraft ...1–2% cloud ...

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Retrieval methods of effective cloud cover from the GOME instrument: an intercomparison

Retrieval methods of effective cloud cover from the GOME instrument: an intercomparison

... regular cloud data with a global coverage for analysis of its distribution and trends than combining all surface observations ...the cloud fraction and other parameters of ...For cloud cover ...

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Evaluation of modeled surface ozone biases as a function of cloud cover fraction

Evaluation of modeled surface ozone biases as a function of cloud cover fraction

... tional cloud-coverage ...cific cloud and moisture fields required as input for the chemical-transport model, regional air-quality models were designed to diagnose some additional cloud-related fields ...

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Mission Planner for Solar Powered Unmanned Aerial Vehicles

Mission Planner for Solar Powered Unmanned Aerial Vehicles

... uniform cloud cover through the ...the cloud cover through the map, followed by a case of study that presents tests with real weather forecast data in order to obtain results closer to those ...

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Neural models project for solar radiation and atmospheric temperature forecast

Neural models project for solar radiation and atmospheric temperature forecast

... Table 4.1 shows the minimum, average, and maximum values of the absolute cloud cover estimation error for the methods employed. For the fixed threshold method, only the results obtained on the HSVR colour ...

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Evaluation of cloud fraction and its radiative effect simulated by IPCC AR4 global models against ARM surface observations

Evaluation of cloud fraction and its radiative effect simulated by IPCC AR4 global models against ARM surface observations

... sky cover related products, such as cloud cover derived from the Total Sky Imager (TSI), total sky cover (TSK) derived from the sur- face broadband SW radiometers during daytime (Long et ...

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Tropical cirrus and water vapor: an effective Earth infrared iris feedback?

Tropical cirrus and water vapor: an effective Earth infrared iris feedback?

... high cloud area. Consider a decrease of high cloud cover by 20% as an example and assume that the tropi- cal moist region follows the area of cloudy moist air with the same relative ...

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Photolysis rates in correlated overlapping cloud fields: Cloud-J 7.3c

Photolysis rates in correlated overlapping cloud fields: Cloud-J 7.3c

... fractional cloud cover has been developed and is implemented as Cloud-J – a multi- scattering eight-stream radiative transfer model for solar ra- diation based on ...of cloud layers, ...

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Sensitivity of PARASOL multi-angle photo-polarimetric aerosol retrievals to cloud contamination

Sensitivity of PARASOL multi-angle photo-polarimetric aerosol retrievals to cloud contamination

... criterion filters out all cases (partially) covered by medium to thick clouds (COT ≥ 5), and virtually all cases with partial thin cloud cover (COT = 1). Aerosol retrievals from PARASOL observations at two ...

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Influences of in-cloud aerosol scavenging parameterizations on aerosol concentrations and wet deposition in ECHAM5-HAM

Influences of in-cloud aerosol scavenging parameterizations on aerosol concentrations and wet deposition in ECHAM5-HAM

... Figure 8 shows the geographic distribution of the ratio of the number burdens between the F100, DIAG-FULL, and PROG-AP simulations, and the CTL simulation. For the PROG-AP simulation only the interstitial number burdens ...

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Data and techniques for studying the urban heat island effect in Johannesburg

Data and techniques for studying the urban heat island effect in Johannesburg

... not cover the full study ...resolution cloud-free data over areas which are frequently ...contain cloud cover. In order to increase the chances of acquir- ing cloud-free data, low ...

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SURFACE OZONE CONCENTRATIONS AND THE METEOROLOGICAL CONDITIONS AT AN URBAN TROPICAL SITE IN THE SOUTHERN HEMISPHERE

SURFACE OZONE CONCENTRATIONS AND THE METEOROLOGICAL CONDITIONS AT AN URBAN TROPICAL SITE IN THE SOUTHERN HEMISPHERE

... humidity), cloud cover, precipi- tation, winds, aerosols, and plumes of smoke also play impor- tant roles in the determination of SOC (Kim & Newchurch, 1998; Camalier et ...

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Modeling natural emissions in the Community Multiscale Air Quality (CMAQ) model – Part 2: Modifications for simulating natural emissions

Modeling natural emissions in the Community Multiscale Air Quality (CMAQ) model – Part 2: Modifications for simulating natural emissions

... dation may be underestimated. This may potentially under- estimate natural sulfate aerosol levels. Test E examined the potential impact of this problem on sulfate by simulating en- hanced cloud cover over ...

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A fast SEVIRI simulator for quantifying retrieval uncertainties in the CM SAF cloud physical property algorithm

A fast SEVIRI simulator for quantifying retrieval uncertainties in the CM SAF cloud physical property algorithm

... evaluated cloud cover parametrization schemes with NOAA9 AVHRR data; Tselioudis and Jakob (2002) evaluated seasonal cloud prop- erty distributions of mid-latitude clouds in weather and cli- mate ...

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A six year satellite-based assessment of the regional variations in aerosol indirect effects

A six year satellite-based assessment of the regional variations in aerosol indirect effects

... retrieve cloud optical depth and near IR to mid-IR measurements to retrieve cloud droplet size that are then converted to LWP using ...MODIS cloud data are only used for pixels over water surfaces ...

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Brief Communication: Climatic, meteorological and topographical causes of the 16–17 June 2013 Kedarnath (India) natural disaster event

Brief Communication: Climatic, meteorological and topographical causes of the 16–17 June 2013 Kedarnath (India) natural disaster event

... sure, cloud cover, surface temperature, relative humidity and cloud-top temperature were analyzed to understand the heavy rainfall during 15–17 June 2013, which caused un- precedented loss of human ...

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Large methane releases lead to strong aerosol forcing and reduced cloudiness

Large methane releases lead to strong aerosol forcing and reduced cloudiness

... global cloud cover and cloud water content, implying a strong secondary indi- rect aerosol ...in cloud droplet number concentration (CNDC) in the two models, suggests that cloud-albedo ...

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Evaluation of cloud base height measurements from ceilometer CL31 and MODIS satellite over Ahmedabad, India

Evaluation of cloud base height measurements from ceilometer CL31 and MODIS satellite over Ahmedabad, India

... and mid-level clouds. Recently, Stefan et al. (2014) have used similar ground based instrument to study cloud cover over Măgurele, Romania and compared with MODIS satellite. These results infer that ...

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Snow cover data derived from MODIS for water balance applications

Snow cover data derived from MODIS for water balance applications

... removes all clouds from the snow cover product. It can be seen from the validation that it is acceptable to use this method to remove the clouds, but one should also be aware that this approach has most of the ...

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