نتایج جستجو برای: مدل wrf chem

تعداد نتایج: 147872  

در این مطالعه، بر اساس خروجی‏های مدل WRF-CHEM، الگوهای توزیع قائم سامانه‏های گردوغبارزا در غرب ایران به دو دسته تقسیم شد: الگوهایی با توزیع قائم در حدود 5/6 کیلومتر و کمتر از 5/3 کیلومتر. الگوهای همدید رخداد گردوغبار در دورة سرد به دو دسته تقسیم می‌شود: جبهه‏ای و غیرجبهه‏ای. در الگوی اول جبهه‏ای، بیشینة ارتفاع گردوغبار حدود 5/6 کیلومتر است و وابسته به شدت واگرایی در تراز میانی و سرعت قائم بالاس...

Journal: :Atmospheric Environment 2021

We implement and test an analog-based post-processing method to improve short range forecasts of aerosol optical depth (AOD) using the Weather Research Forecasting model coupled with Chemistry (WRF-Chem). Model postprocessing AOD is performed historical analog a Kalman Filter (KF). Analog are selected from WRF-Chem simulations based on set environmental predictors (AOD, wind speed, precipitable...

Irannejad, Parviz, Rezazadeh, Maryam, Shao, Yaping,

Extended abstract 1- INTRODUCTION        Atmospheric aerosols, solid and liquid particles in the atmosphere, play a crucial role in the atmospheric radiation equilibrium. These particles have an influence on the scattering and absorption of short wavelength radiation, and on the other hand, affect radiation absorption and emission in long wavelengths. Dust particles are among the importan...

2014
Christian N. Gencarelli Ian M. Hedgecock Francesca Sprovieri Gregor J. Schürmann James H. Crawford

Ozone concentrations in the Mediterranean area regularly exceed the maximum levels set by the EU Air Quality Directive, 2008/50/CE, a maximum 8-h mean of 120 μg·m−3, in the summer, with consequences for both human health and agriculture. There are a number of reasons for this: the particular geographical and meteorological conditions in the Mediterranean play a part, as do anthropogenic ozone p...

Journal: :Revista espanola de cardiologia 2010
César A Belziti Rodrigo Bagnati Paola Ledesma Norberto Vulcano Sandra Fernández

INTRODUCTION AND OBJECTIVES Acute decompensated heart failure (ADHF) is a common cause of hospital admission and is associated with an increased risk of worsening renal function (WRF). The aims of this study were to investigate the incidence and predictors of WRF in patients admitted for ADHF and to assess the prognostic significance of WRF at 1 year. METHODS A retrospective analysis of data ...

Journal: :European heart journal 2014
Kevin Damman Mattia A E Valente Adriaan A Voors Christopher M O'Connor Dirk J van Veldhuisen Hans L Hillege

AIMS Chronic kidney disease (CKD) and worsening renal function (WRF) have been associated with poor outcome in heart failure (HF). METHODS AND RESULTS Articles were identified by literature search of MEDLINE (from inception to 1 July 2012) and Cochrane. We included studies on HF patients and mortality risk with CKD and/or WRF. In a secondary analysis, we selected studies investigating predict...

Journal: :جغرافیا و مخاطرات محیطی 0
حسین ملکوتی سمیرا باباحسینی

introduction atmospheric processes and their interactions with ground surface responsible for formation and evolution of a heavy dust storm are important for identifying dust transport pathways. spatial and temporal distribution of middle eastern dust for a severe dust event during 4-8 july 2009 was analyzed by weather research and forecasting with chemistry (wrf/chem) model simulations, in-sit...

Journal: :European journal of heart failure 2015
Hans-Peter Brunner-La Rocca Christian Knackstedt Luc Eurlings Vinzent Rolny Friedemann Krause Matthias E Pfisterer Daniel Tobler Peter Rickenbacher Micha T Maeder

AIMS Renal failure is a major challenge in treating heart failure (HF) patients. HF medication may deteriorate renal function, but the impact thereof on outcome is unknown. We investigated the effects of HF medication on worsening renal function (WRF) and the relationship to outcome. METHODS AND RESULTS This post-hoc analysis of TIME-CHF (NT-proBNP-guided vs. symptom-guided management in chro...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید