Search results for "ECMWF"
showing 6 items of 6 documents
A new preprocessing tool of ECMWF data for CALMET forecasting simulations
2019
Today, strategies for emergency preparedness, in presence of accidental scenarios in high-risk plants with releases into the atmosphere, have become a priority. To achieve this goal, it is important to have forecast meteorological data in local areas to use in dispersion and transport models and so to respond in advance emergency situations. The paper reports results of research performed to develop a new tool, called FORCALM that is capable to elaborate European Centre for Medium-Range Forecasts (ECMWF) forecast data to use for simulations by CALMET/CALPUFF modeling system. A case study, relevant to an accident occurred in Mediterranean Refinery at Milazzo (Italy), has been examined to val…
The impact of a mesoscale convective system cold pool on the northward propagation of the intertropical discontinuity over West Africa
2009
The interaction between a mesoscale convection system cold pool and the intertropical discontinuity (ITD) is investigated on two consecutive days (5 and 6 June 2006), in the framework of the African Monsoon Multidisciplinary Analysis Special Observing Period (SOP 1a). Satellite imagery and surface meteorological observations are used to track the movement of the ITD prior to and after its interaction with the cold pool. The impact of the northward propagating cold pool on the Sahelo-Saharan planetary boundary layer (PBL) thermodynamics and aerosol vertical distribution is analyzed by means of airborne and ground-based measurements over the two-day period. Complementary European Centre for M…
Evaluation of air temperature estimated by ERA5-Land reanalysis using surface data in Pernambuco, Brazil.
2022
This study aimed to analyze the average air temperature data estimated by ERA5-Land reanalysis over 10 years (01/01/2011 to 12/31/2020), based on data from 12 automatic weather stations located in different cities in the state of Pernambuco, northeast of Brazil. For more careful evaluation, the average air temperature data were stratified by mesoregions of the state. ERA5-Land reanalysis data were validated using statistical indices that evaluated the accuracy. The average air temperature estimated by ERA5-Land reanalysis agree well with weather stations in almost the entire state of Pernambuco. The highest accuracy of the average air temperature estimated by ERA5-Land occurred in the city …
Analisi dei modelli validi per lo studio dei processi di deposizione secca e sui dati meteo previsionali dell’ECMWF
2017
The DEIM's research group in collaboration with ENEA –C.R. Bologna, has performed the following activities: "Analysis of models to study dry deposition processes of pollutants in atmosphere onto urban surface", and "Preliminary study of compatibility between ECMWF forecast data and CALMET model". Regarding the first activity, a dry deposition model, based on electrical analogy, is developed to analyze complex phenomena,such as inertial impact processes and wind turbulence effects, that influence the transport of pollutants in the interface between urban canopy and quasi-laminar sublayer. The model allows the deposition rate assessment for particles with different diameters and various atmos…
SMOS-IC: An Alternative SMOS Soil Moisture and Vegetation Optical Depth Product
2017
© 2017 by the authors. The main goal of the Soil Moisture and Ocean Salinity (SMOS) mission over land surfaces is the production of global maps of soil moisture (SM) and vegetation optical depth (τ) based on multi-angular brightness temperature (TB) measurements at L-band. The operational SMOS Level 2 and Level 3 soil moisture algorithms account for different surface effects, such as vegetation opacity and soil roughness at 4 km resolution, in order to produce global retrievals of SM and τ. In this study, we present an alternative SMOS product that was developed by INRA (Institut National de la Recherche Agronomique) and CESBIO (Centre d'Etudes Spatiales de la BIOsphère). One of the main go…
Īstermiņa hidroloģisko prognožu salīdzinošā analīze 2013. un 2014.gadu hidroloģiskajās fāzēs: Irbes, Abavas, Bērzes, Gaujas, Ogres un Dubnas upju bas…
2015
Maģistra darba tēma ir „Īstermiņa hidroloģisko prognožu salīdzinošā analīze 2013. un 2014. gadu hidroloģiskajās fāzēs: Irbes, Abavas, Bērzes, Gaujas, Ogres un Dubnas upju baseinu piemēros”. Darba mērķis ir novērtēt, kura skaitliskā meteoroloģiskā modeļa HIRLAM vai ECMWF laika apstākļu prognozes ļauj modelēt precīzākās īstermiņa hidroloģiskās prognozes sešiem pētītajiem Latvijas upju baseiniem. Literatūras analīzē aplūkota hidroloģiskā modelēšana, modeļu veidi un to pielietojums hidroloģisko prognožu modelēšanā apvienojumā ar skaitlisko meteoroloģisko modeļu HIRLAM un ECMWF laikapstākļu prognozēm. Pētnieciskajā daļā tika modelētas īstermiņa hidroloģiskās prognozes sešiem pētītajiem upju base…