نتایج جستجو برای: interim ecmwf data
تعداد نتایج: 2417464 فیلتر نتایج به سال:
Abstract. Climate change is set to affect extreme climate and meteorological events. The combination of interacting physical processes (climate drivers) across various spatial temporal scales resulting an event referred as compound event. complex geography topography Greece forms a variety regions with different local conditions affecting the daily minimum temperature precipitation distribution...
Methods Definitions for feasibility and applicability were based on the AGREE instrument. The FE design was a parallel, two-arm before-after descriptive study in 2 convenience samples, Principal sites, invited by the 6 WHO Regional Offices and voluntary Complementary sites of selected HCFs, conducted over 4 phases. A suite of tools to assist implementation, assessment, training, education and f...
2. COMPARISON BETWEEN THE ECMWF 3DVAR AND 4DVAR SYSTEMS The ECMWF 4dVar system is, from the technical point of view, very similar to the 3dVar system. Both systems use the same unix scripts, and share much of the Fortran code. The same background error covariance matrix and observation operators are used, and most of the peripheral tasks such as fetching and archiving of fields and observations...
The Megha-Tropiques, an Indo French mission, with four on-board payloads was launched in October 2011 to improve our understanding on hydrological cycle and radiation budget. The SAPHIR (Sondeur Atmosphérique du Profil d’Humidité Intertropicale par Radiométrie), a sounder for profiling humidity, is a key payload and expected to play a major role in fulfilling the mission objectives. The present...
Article history: Received 28 April 2008 Received in revised form 2 October 2008 Accepted 3 December 2008 Latent heatflux in the South China Sea (SCS)mainly based on the Tropical RainMeasuringMission Microwave Imager (TMI) is comparedwith the Objectively Analyzed air-sea heat Fluxes (OAFlux), theGoddard Satellite-BasedSurface Turbulent Fluxes, version2 (GSSTF2), the JapaneseOcean Flux Data Sets ...
[1] The vulnerability of society on extreme weather has resulted in extensive research on the statistics of extremes. Although the theoretical framework of extreme value statistics is well developed, meteorological applications are often limited by the relative shortness of the available datasets. In order to overcome this problem, we use archived data from all past seasonal forecast ensemble r...
This study investigated the performance of two ocean wave models, that is, Simulation Wave Nearshore (SWAN) and WAVEWATCH-III (WW3), interannual seasonal variability transport induced by Stokes drift during period from 1989 to 2019. Three types sea surface wind products were used for simulation: European Centre Medium-Range Weather Forecasts (ECMWF) Interim, Cross Calibrated Multi-Platform Vers...
7 In recent years, the global positioning system (GPS) has been exploited via radio occultation techniques to obtain proÿles of refractivity, temperature, pressure and water vapor in the neutral atmosphere and electron density in the ionosphere. The 9 GPS=MET experiment, which placed a GPS receiver in a low-Earth orbit, provided a wealth of data which was used to test this concept and the accur...
تغییرات عمق برف، بهسبب تأثیرگذاری در شار انرژی سطحی و شرایط هیدرولوژیکی، در تحولات آب و هوای محلی و جهانی نقش درخور توجهی دارد. هدف از این مطالعه مدلسازی و تحلیل فضایی عمق برف با استفاده از پایگاه ECMWF نسخة ERA Interim برای دورة زمانی 1980-2016 با تفکیک مکانی 125/0×125/0 درجة قوسی است. در این راستا دادههای ارتفاع، طول و عرض جغرافیایی، و شاخص پوشش گیاهی NDVI سنجندة MO...
میدان گرانی حاصل از مشاهدات گرانیسنجی ماهوارهای مانند GRACE شامل خطاهایی ناشی از نوفة دستگاهی، نمونهبرداری مکانی ناهمسانگرد (anisotropic) و خطای تداخل سیگنال (aliasing) و زمانی ناشی از نقص مدلسازی تغییرات جرم کوتاهمدت زمین است. کیفیت مشاهدات GRACE در مأموریت GRACE-FO بهبود یافت، اما خطای تداخل سیگنال زمانی همچنان یک عامل تأثیرگذار بر گرانی محاسباتی از مشاهدات میباشد. به همین دلیل محاسبه ...
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