نتایج جستجو برای: ecmwf database

تعداد نتایج: 269560  

Journal: :Weather and Forecasting 2021

Abstract The skill of precipitation forecasts from global prediction systems has a strong regional and seasonal dependence. Quantifying the models for different regions timescales is important, not only to improve forecast skill, but enhance effective uptake information. sub-seasonal (S2S) database contains near real-time re-forecasts 11 operational centres provides great opportunity evaluate c...

Journal: :Meteorological Applications 1997

Journal: :international journal of civil engineering 0
s. malaikrisanachalee faculty of engineering, kasetsart university, 50 phaholyothin rd., jatujak, bangkok, thailand, 10220 h. vathananukij faculty of engineering, kasetsart university, 50 phaholyothin rd., jatujak, bangkok, thailand, 10220

java is an object-oriented program that has abundant open-source libraries for application development and 3d model rendering. spatial database is the database that can efficiently store and manage geographic information data though various spatial data management techniques. this paper explores the rationale of coupling java with spatial database to develop an effective platform for future bui...

از میان مولفه‌های اقلیمی، بارش به علت دارا بودن تغییرات مکانی و زمانی قابل توجه، یکی از پیچیده‌ترین پدیده‌ها در چرخه هیدرولوژیکی بشمار می-آید. با توسعه روزافزون تکنولوژی‌های ماهواره‌ای در دهه‌های اخیر، امکان دسترسی به منابع بارشی با توان تفکیک مکانی و زمانی بالا برای بسیاری از نقاط جهان فراهم شده است. در پژوهش حاضر به ارزیابی عملکرد زمانی و مکانی یکی از مهم‌ترین منابع بارشی مدل مبنا به نام ECMW...

2009
T. Stavrakou J.-F. Müller I. De Smedt M. Van Roozendael

A new one-decade (1997–2006) dataset of formaldehyde (HCHO) columns retrieved from GOME and SCIAMACHY is compared with HCHO columns simulated by an updated version of the IMAGES global chemical transport model. This model version includes an optimized chemical scheme with respect to HCHO production, where the short-term and final HCHO yields from pyrogenically emitted non-methane volatile organ...

2007
H. Flentje

Evaluation of ECMWF water vapour analyses by airborne differential absorption lidar measurements: a case study between Brasil and Europe H. Flentje, A. Dörnbrack, A. Fix, G. Ehret, and E. Hólm Deutscher Wetterdienst, Hohenpeißenberg, Germany DLR Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany European Centre For Medium Range Weather Forecasts, Reading, UK Received: 8 March 2007 – ...

2000
DAVID H. BROMWICH ARIC N. ROGERS RICHARD I. CULLATHER JAMES W. C. WHITE KARL J. KREUTZ

The El Niño–Southern Oscillation (ENSO) signal in Antarctic precipitation is evaluated using European Centre for Medium-Range Weather Forecasts (ECMWF) operational analyses and ECMWF 15-yr (1979–93) reanalyses. Operational and reanalysis datasets indicate that the ENSO teleconnection with Antarctic precipitation is manifested through a close positive correlation between the Southern Oscillation...

1998
J. Bartels D. Peters G. Schmitz

We investigated to what extent the isentropic, non-geostrophic formulation of zonally averaged circulation derived for stratospheric conditions is applicable to climatological transport in the extratropical troposphere and lower stratosphere. The study is based on 10 years of daily data of ECMWF analysis and on the ECHAM3 climate model of the German Climate Computing Centre. The main result is ...

Journal: :IEEE Trans. Geoscience and Remote Sensing 2003
Jochen Horstmann Helmut Schiller Johannes Schulz-Stellenfleth Susanne Lehner

The global availability of synthetic aperture radar (SAR) wave mode data from the European Remote Sensing (ERS) satellites ERS-1 and ERS-2, as well as ENVISAT, allows for the investigation of the wind field over the ocean on a global and continuous basis. For this purpose, 27 days of ERS-2 SAR wave mode data were processed, representing a total of 34 310 imagettes of size 10 km 5 km, available ...

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