Results 111 to 120 of about 8,334 (293)

Retrieval of the aerosol optical thickness from UV global irradiance measurements [PDF]

, 2015
The UV irradiance is measured at Évora since several years, where a CIMEL sunphotometer integrated in AERONET is also installed. In the present work, measurements of UVA (315 - 400 nm) irradiances taken with Kipp&Zonen radiometers, as well as satellite ...
Costa, Maria João Tavares da, Silva, Ana Maria Almeida, Salgueiro, Vanda Cristina Pires, Obregón Muñoz, María Ángeles, Silva, Ana Maria, Antón Martínez, Manuel, Salgueiro, Vanda, Antón, Manuel, Costa, Maria João, Bortoli, Daniele, Obregón, Maria   +10 more
core   +1 more source

Characterization of synoptic environment for mesoscale convective systems over South Korea using ERA5 reanalysis data

Quarterly Journal of the Royal Meteorological Society, EarlyView.
In this study, the synoptic conditions for modes of mesoscale convective systems (MCSs) in South Korea are generalized based on composite analysis. The preferred precipitation region, synoptic patterns, moisture transport, sea surface temperature and thermodynamic and dynamic instabilities are characterized according to four modes: convective cells (CC)
Jeong‐Eun Lee, GyuWon Lee
wiley   +1 more source

Characterization of the vertical structure of Saharan dust export to the Mediterranean basin

, 1999
International audienceWe present the results of our investigations into the vertical structure of several North African dust plumes exported to the Mediterranean in 1997. Two backscatter lidar systems were operated in the western and eastern parts of the
Schneider, X., Chazette, P., Hamonou, E, Balis, D, Papayannis, A., Ancellet, Gérard, Ancellet, G, Dulac, F, Papayannis, A, Galani, E, Chazette, P, Balis, D., Schneider, X, Dulac, F., Hamonou, E., Galani, E.   +15 more
core   +1 more source

Lagrangian analysis of two flavours of Central European heatwaves: Formation under omega blocking versus initiation by subtropical ridges

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We investigate whether Central European heatwaves (HWs) forming under omega blocking differ from those enabled by subtropical ridges, in terms of both air‐mass origin and processes warming air parcels along their way. Using ERA5‐based backward trajectories and a Lagrangian temperature anomaly decomposition, we identify significant differences in the ...
Alexander Lemburg, Andreas H. Fink, Miguel M. Lima, Joaquim G. Pinto   +3 more
wiley   +1 more source

Relative humidity and its effect on aerosol optical depth in the vicinity of convective clouds

Environmental Research Letters, 2013
The hygroscopic growth of aerosols is controlled by the relative humidity (RH) and changes the aerosols’ physical and hence optical properties. Observational studies of aerosol–cloud interactions evaluate the aerosol concentration using optical ...
O Altaratz, R Z Bar-Or, U Wollner, I Koren   +3 more
doaj   +1 more source

Effective aerosol optical thickness retrieval algorithm using modis 500 metre data [PDF]

, 2015
Aerosol estimation from satellite data is crucial for the air quality assessment, visibility estimation, and climate modelling. Numerous retrieval algorithms have been developed for aerosol optical thickness estimation but there are still uncertainties ...
Wahab, Ahmad Mubin
core  

Towards improving Arctic mixed‐phase cloud representation in the ECMWF model using MOSAiC observations

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Abstract The presence of Arctic clouds plays a crucial role in the evolution of the surface temperature of Arctic sea ice. However, large biases in cloud representation remain in state‐of‐the‐art weather and climate models. In this study, we use observational data from the one‐year Arctic ship campaign Multi‐disciplinary drifting Observatory for the ...
Luise Schulte, Richard Forbes, Linus Magnusson, Vera Schemann, Jonathan Day, Susanne Crewell   +5 more
wiley   +1 more source

Saharan dust and ice nuclei over Central Europe [PDF]

, 2010
Surface measurements of aerosol and ice nuclei (IN) at a Central European mountain site during an episode of dust transport from the Sahara are presented.
B. Nillius, Levin, Zev, Barrie, Leonard A., Nillius, Björn, M. Ebert, Bingemer, Heinz, S. Weinbruch, Ebert, Martin, Nickovic, Slobodan, Haunold, Werner, H. Klein, U. Bundke, Klein, Holger, Bundke, Ulrich, Weinbruch, Stephan, H. Bingemer, L. Schuetz, Z. Levin, Schuetz, Lothar, L. A. Barrie, S. Nickovic, W. Haunold   +21 more
core   +1 more source

A framework to evaluate and identify development requirements for land‐surface models at km‐scale resolution: Application to a semi‐arid and mountainous region

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This article provides a first evaluation of land‐surface models at the km‐scale resolutions at which they are used in weather and Earth‐system models. At these resolutions, the lateral transfers of water that organize landscapes play an important role in predicting evaporation correctly. Riparian processes and human water management for irrigation need
Jan Polcher, Julie Collignan, Juan Pablo Sierra Perez, Gabriele Arduini, Sophie Bastin, Martin Best, Aaron Boone, Manel Bravo, Francesca Covella, Jasper M. C. Denissen, Cenlin He, Simon Munier, Marc Prange, Elena Shevliakova   +13 more
wiley   +1 more source

Analysis of the fractional scattering contribution in the forward peak for multicomponent systems

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Derivation and justification of mixing rules for multicomponent systems. A novel formulation of the delta‐Eddington scaling rule. Analytical guidance for comparing radiative transfer results. Abstract The widely used δ‐Eddington approximation improves the accuracy of radiative transfer calculations by representing the fraction of scattering into the ...
Jiangnan Li, Yue Cai
wiley   +1 more source