A Comparison of the Impacts of Radiosonde and AMSU Radiance Observations in GSI Based 3DEnsVar and 3DVar Data Assimilation Systems for NCEP GFS
المؤلفون المشاركون
المصدر
العدد
المجلد 2015، العدد 2015 (31 ديسمبر/كانون الأول 2015)، ص ص. 1-17، 17ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2015-07-29
دولة النشر
مصر
عدد الصفحات
17
التخصصات الرئيسية
الملخص EN
The impact of observations can be dependent on many factors in a data assimilation (DA) system including data quality control, preprocessing, skill of the model, and the DA algorithm.
The present study focuses on comparing the impacts of observations assimilated by two different DA algorithms.
A three-dimensional ensemble-variational (3DEnsVar) hybrid data assimilation system was recently developed based on the Gridpoint Statistical Interpolation (GSI) data assimilation system and was implemented operationally for the National Center for Environmental Prediction (NCEP) Global Forecast System (GFS).
One question to address is, how the impacts of observations on GFS forecasts differ when assimilated by the traditional GSI-three dimensional variational (3DVar) and the new 3DEnsVar.
Experiments were conducted over a 6-week period during Northern Hemisphere winter season at a reduced resolution.
For both the control and data denial experiments, the forecasts produced by 3DEnsVar were more accurate than GSI3DVar experiments.
The results suggested that the observations were better and more effectively exploited to increment the background forecast in 3DEnsVar.
On the other hand, in GSI3DVar, where the observation will be making mostly local, isotropic increments without proper flow dependent extrapolation is more sensitive to the number and types observations assimilated.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Kutty, Govindan& Wang, Xuguang. 2015. A Comparison of the Impacts of Radiosonde and AMSU Radiance Observations in GSI Based 3DEnsVar and 3DVar Data Assimilation Systems for NCEP GFS. Advances in Meteorology،Vol. 2015, no. 2015, pp.1-17.
https://search.emarefa.net/detail/BIM-1052691
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Kutty, Govindan& Wang, Xuguang. A Comparison of the Impacts of Radiosonde and AMSU Radiance Observations in GSI Based 3DEnsVar and 3DVar Data Assimilation Systems for NCEP GFS. Advances in Meteorology No. 2015 (2015), pp.1-17.
https://search.emarefa.net/detail/BIM-1052691
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Kutty, Govindan& Wang, Xuguang. A Comparison of the Impacts of Radiosonde and AMSU Radiance Observations in GSI Based 3DEnsVar and 3DVar Data Assimilation Systems for NCEP GFS. Advances in Meteorology. 2015. Vol. 2015, no. 2015, pp.1-17.
https://search.emarefa.net/detail/BIM-1052691
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1052691
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر