Search Results - "Calbó, Josep"

Assessment of cloudless-to-cloud transition zone from downwelling longwave irradiance measurements by González, Josep-Abel, Calbó, Josep, Sola, Yolanda

“…The transition zone has been defined as corresponding to atmospheric conditions between cloud-free (albeit containing a suspension of dry particles, i.e…”
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Dimming/brightening over the Iberian Peninsula: Trends in sunshine duration and cloud cover and their relations with atmospheric circulation by Sanchez-Lorenzo, Arturo, Calbó, Josep, Brunetti, Michele, Deser, Clara

“…This study analyzes the spatial and temporal changes in sunshine duration (SunDu) and total cloud cover (TCC) over the Iberian Peninsula (IP) and four…”
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A method to assess the cloud-aerosol transition zone from ceilometer measurements by Ruiz de Morales, Jaume, Calbó, Josep, González, Josep-Abel, Sola, Yolanda

“…Cloud and aerosol contribution to the Earth's radiative budget constitutes one of the most significant uncertainties in future climate projections. To…”
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Spatial and Temporal Trends in Sunshine Duration over Western Europe (1938–2004) by Sanchez-Lorenzo, Arturo, Calbó, Josep, Martin-Vide, Javier

“…This work analyzes sunshine duration variability in the western part of Europe (WEU) over the 1938–2004 period. A principal component analysis is applied to…”
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Quantifying Transition Zone Radiative Effects in Longwave Radiation Parameterizations by Jahani, Babak, Calbó, Josep, González, Josep‐Abel

“…The change in the state of sky from cloudy to cloudless (or vice versa) comprises an additional phase called “transition zone,” in which the characteristics of…”
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Assessing Rapid Variability in Atmospheric Apparent Optical Depth with an Array Spectrometer System by González, Josep-Abel, Calbó, Josep

“…A method for determining rapid variations in atmospheric optical depth is proposed. The method is based upon computation of the ratio between close-time…”
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Fewer clouds in the Mediterranean: consistency of observations and climate simulations by Sanchez-Lorenzo, Arturo, Enriquez-Alonso, Aaron, Calbó, Josep, González, Josep-Abel, Wild, Martin, Folini, Doris, Norris, Joel R., Vicente-Serrano, Sergio M.

“…Clouds play a major role in the climate system, but large uncertainties remain about their decadal variations. Here we report a widespread decrease in cloud…”
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The thin border between cloud and aerosol: Sensitivity of several ground based observation techniques by Calbó, Josep, Long, Charles N., González, Josep-Abel, Augustine, John, McComiskey, Allison

“…Cloud and aerosol are two manifestations of what it is essentially the same physical phenomenon: a suspension of particles in the air. The differences between…”
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Empirical studies of cloud effects on UV radiation: A review by Calbo, Josep, Pages, David, Gonzalez, Josep-Abel

“…The interest in solar ultraviolet (UV) radiation from the scientific community and the general population has risen significantly in recent years because of…”
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Recent spatial and temporal variability and trends of sunshine duration over the Iberian Peninsula from a homogenized data set by Sanchez‐Lorenzo, Arturo, Brunetti, Michele, Calbó, Josep, Martin‐Vide, Javier

“…This paper describes the construction of a new data set of sunshine duration over the Iberian Peninsula (IP), based upon 72 monthly instrumental series…”
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Estimation of surface shortwave radiation components under all sky conditions: Modeling and sensitivity analysis by Chen, Ling, Yan, Guangjian, Wang, Tianxing, Ren, Huazhong, Calbó, Josep, Zhao, Jing, McKenzie, Richard

“…Clouds are the most important modulator of the amount of solar energy absorbed by the earth–atmosphere system. Traditional one-dimensional (1D) plane-parallel…”
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Building global and diffuse solar radiation series and assessing decadal trends in Girona (NE Iberian Peninsula) by Calbó, Josep, González, Josep-Abel, Sanchez-Lorenzo, Arturo

“…Measurement of solar radiation was initiated in Girona, northeast of the Iberian Peninsula, in the late 1980s. Initially, two pyranometers were installed, one…”
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Cloud cover climatologies in the Mediterranean obtained from satellites, surface observations, reanalyses, and CMIP5 simulations: validation and future scenarios by Enriquez-Alonso, Aaron, Sanchez-Lorenzo, Arturo, Calbó, Josep, González, Josep-Abel, Norris, Joel R.

“…Clouds are an important regulator of climate due to their connection to the water balance of the atmosphere and their interaction with solar and infrared…”
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Climatology and changes in cloud cover in the area of the Black, Caspian, and Aral seas (1991–2010): a comparison of surface observations with satellite and reanalysis products by Calbó, Josep, Badosa, Jordi, González, Josep‐Abel, Dmitrieva, Lidya, Khan, Valentina, Enríquez‐Alonso, Aaron, Sanchez‐Lorenzo, Arturo

“…ABSTRACT This article presents a climatology of total cloud cover (TCC) in the area of the three inland Eurasian seas (Black, Caspian, and Aral Sea). Analyses…”
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Two Methods for Retrieving UV Index for All Cloud Conditions from Sky Imager Products or Total SW Radiation Measurements by Badosa, Jordi, Calbó, Josep, Mckenzie, Richard, Liley, Ben, González, Josep-Abel, Forgan, Bruce, Long, Charles N.

“…Cloud effects on UV Index (UVI) and total solar radiation (TR) as a function of cloud cover and sunny conditions (from sky images) as well as of solar zenith…”
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Transition Zone Radiative Effects in Shortwave Radiation Parameterizations: Case of Weather Research and Forecasting Model by Jahani, Babak, Calbó, Josep, González, Josep‐Abel

“…A number of studies have stated that the shift from a cloud‐free to cloudy atmosphere (and vice versa) contains an additional phase, named “Transition (or…”
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Discrepancies in the Climatology and Trends of Cloud Cover in Global and Regional Climate Models for the Mediterranean Region by Enriquez‐Alonso, Aaron, Calbó, Josep, Sanchez‐Lorenzo, Arturo, Tan, Elcin

“…The present study aims at comparing total cloud cover (TCC) as simulated by regional climate models (RCM) from CORDEX project with the same variable as…”
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A Simple Method to Retrieve Cloud Properties from Atmospheric Transmittance and Liquid Water Column Measurements by Matamoros, Salvador, González, Josep-Abel, Calbó, Josep

“…A deeper knowledge of the effects and interactions of clouds in the climatic system requires developing both satellite and ground-based methods to assess their…”
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Relationship between VOC and NOx emissions and chemical production of tropospheric ozone in the Aburrá Valley (Colombia) by TORO, Maria Victoria, CREMADES, Lazaro V, CALBO, Josep

“…Relationship between volatile organic compounds (VOC) and nitrogen oxides (NOx) emissions and the chemical production of tropospheric ozone is studied through…”
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Bernoulli correction to viscous losses: Radial flow between two parallel discs by Armengol, Jordi, Calbó, Josep, Pujol, Toni, Roura, Pere

“…For a massless fluid ( ρ = 0 ) , the steady flow along a duct is governed exclusively by viscous losses. In this paper, we show that the velocity profile…”
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