نتایج جستجو برای: مدل میانمقیاس wrf

تعداد نتایج: 122703  

ژورنال: ژئوفیزیک ایران 2019

تعیین مناطق تحت‌تأثیر مواد باروری (مناطق هدف) از موضوعات مهم در اجرای برنامه­های استاندارد بارورسازی ابرها است. مدل پاشندگی HYSPLIT امکان شبیه‌سازی انتقال، پخش و نهشت عوامل باروری و تصویر کردن منطقه تحت‌تأثیر آنها را روی نقشه فراهم می­کند؛ بنابراین در این پژوهش با تأمین داده­های هواشناسی مورد نیاز مدل HYSPLIT به‌کمک اجرای مدل هواشناسی میان‌مقیاس WRF، نقش برخی از پارامترهای مؤثر در شبیه‌‌سازی من...

2015
Yogendra Sharma Dinesh B. Kulkarni

The Weather Research and Forecasting model (WRF) is a simulating system developed for atmospheric weather prediction. WRF model is used for both operational as well as research purposes. The need for accurate weather and climate simulation to be carried out in shorter time is increasing day by day, which leads to the acceleration of existing Numerical Weather Prediction (NWP) system. This paper...

ژورنال: :نیوار 0
زینب ذاکری کارشناس ارشد مرکز پردازش فوق سریع داده های هواشناسی، سازمان هواشناسی کشور مجید آزادی دانشیار پژوهشکده هواشناسی فاطمه صحرائیان مربی پژوهشکده هواشناسی

در این مطالعه برونداد مدل wrf[1] برای پیش بینی بارش در مناطق مختلف کشور در بازه زمانی ابتدای فوریه تا انتهای می سال 2009 میلادی برای پیش بینی های 42، 66 و90 ساعته مورد ارزیابی قرار گرفته است. بدین منظور برونداد بارندگی تجمعی مدل wrf در دوره زمانی مذکور با مقادیر متناظر دیدبانی یعنی بارندگی تجمعی 24ساعته در336 ایستگاه هواشناسی همدیدی در سطح کشور مقایسه شده است. با در نظر گرفتن آستانه های متفاوت ...

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: :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...

2013
A. K. Kochanski M. A. Jenkins J. Mandel J. D. Beezley C. B. Clements

Introduction Conclusions References

2015
Jacqueline B Palmer Howard S Friedman Katherine Waltman Johnson Prakash Navaratnam Stephen S Gottlieb

BACKGROUND Data comparing effects of transient worsening renal function (WRFt) and persistent WRF (WRFp) on outcomes in patients hospitalized with acute heart failure (AHF) are lacking. We determined the characteristics of hospitalized AHF patients who experienced no worsening renal function (non-WRF), WRFt, or WRFp, and the relationship between cohorts and AHF-related outcomes. METHODS AND R...

2008
KEITH M. HINES DAVID H. BROMWICH

A polar-optimized version of the fifth-generation Pennsylvania State University–National Center for Atmospheric Research Mesoscale Model (MM5) was developed to fill climate and synoptic needs of the polar science community and to achieve an improved regional performance. To continue the goal of enhanced polar mesoscale modeling, polar optimization should now be applied toward the state-of-the-a...

Journal: :Journal of the American College of Cardiology 2009
Wilfried Mullens Zuheir Abrahams Gary S Francis George Sokos David O Taylor Randall C Starling James B Young W H Wilson Tang

OBJECTIVES To determine whether venous congestion, rather than impairment of cardiac output, is primarily associated with the development of worsening renal function (WRF) in patients with advanced decompensated heart failure (ADHF). BACKGROUND Reduced cardiac output is traditionally believed to be the main determinant of WRF in patients with ADHF. METHODS A total of 145 consecutive patient...

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