Using Adjoint-Based Forecast Sensitivity Method to Evaluate TAMDAR Data Impacts on Regional Forecasts
Joint Authors
Zhang, Xiaoyan
Wang, Hongli
Huang, Xiang-Yu
Gao, Feng
Jacobs, Neil A.
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-08-06
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
This study evaluates the impact of Tropospheric Airborne Meteorological Data Reporting (TAMDAR) observations on regional 24-hour forecast error reduction over the Continental United States (CONUS) domain using adjoint-based forecast sensitivity to observation (FSO) method as the diagnostic tool.
The relative impact of TAMDAR observations on reducing the forecast error was assessed by conducting the WRFDA FSO experiments for two two-week-long periods, one in January and one in June 2010.
These experiments assimilated operational TAMDAR data and other conventional observations, as well as GPS refractivity (GPSREF).
FSO results show that rawinsonde soundings (SOUND) and TAMDAR exhibit the largest observation impact on 24 h WRF forecast, followed by GeoAMV, aviation routine weather reports (METAR), GPSREF, and synoptic observations (SYNOP).
At 0000 and 1200 UTC, TAMDAR has an equivalent impact to SOUND in reducing the 24-hour forecast error.
However, at 1800 UTC, TAMDAR has a distinct advantage over SOUND, which has the sparse observation report at these times.
In addition, TAMDAR humidity observations at lower levels of the atmosphere (700 and 850 hPa) have a significant impact on 24 h forecast error reductions.
TAMDAR and SOUND observations present a qualitatively similar observation impact between FSO and Observation System Experiments (OSEs).
American Psychological Association (APA)
Zhang, Xiaoyan& Wang, Hongli& Huang, Xiang-Yu& Gao, Feng& Jacobs, Neil A.. 2015. Using Adjoint-Based Forecast Sensitivity Method to Evaluate TAMDAR Data Impacts on Regional Forecasts. Advances in Meteorology،Vol. 2015, no. 2015, pp.1-13.
https://search.emarefa.net/detail/BIM-1052733
Modern Language Association (MLA)
Zhang, Xiaoyan…[et al.]. Using Adjoint-Based Forecast Sensitivity Method to Evaluate TAMDAR Data Impacts on Regional Forecasts. Advances in Meteorology No. 2015 (2015), pp.1-13.
https://search.emarefa.net/detail/BIM-1052733
American Medical Association (AMA)
Zhang, Xiaoyan& Wang, Hongli& Huang, Xiang-Yu& Gao, Feng& Jacobs, Neil A.. Using Adjoint-Based Forecast Sensitivity Method to Evaluate TAMDAR Data Impacts on Regional Forecasts. Advances in Meteorology. 2015. Vol. 2015, no. 2015, pp.1-13.
https://search.emarefa.net/detail/BIM-1052733
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1052733