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Susan R. Sahm authored and/or contributed to the following articles/publications.
FIM Performance for some of the Major events of the 2009-2010 Winter Season
At the last Weather and Forecasting/Numerical Weather Prediction Conference in Omaha in 2009 we showed some examples of forecasts from a new global model known as the FIM, for Flow-following finite-volume Icosahedral Model, that was developed at the Global Systems Division (GSD) of ESRL. In addition to the icosahedral horizontal grid, other diff...
For the 2009 convective season, the 3-km High Resolution Rapid Refresh (HRRR) was run over an expanded domain covering the eastern 2/3 of the United States. Real-time hourly forecasts out to 12-h were produced and a variety of convective guidance products were produced (including 15-min VIL output fields and tracks of severe weather indicators)....
Profiler assessment and ongoing profiler observation quality monitoring using the Rapid Update Cycle
The Observation Assessment Section of the Earth System Research Laboratory / Global Systems Division’s (GSD) Assimilation and Modeling Branch has performed successful observation quality monitoring (OQM) studies in the past for aircraft and surface observations. In these studies, differences between observations and 1-h RUC forecasts have been a...
An assessment of the value of 7 different observation data types (aircraft, profiler, rawinsonde, VAD (velocity azimuth display), GPS precipitable water, METAR, and mesonet) on short-range numerical forecasts is presented for winter and summer 10-day periods. A series of observation sensitivity experiments (OSEs) was conducted using the Rapid Up...
An assessment of the value of 7 different observation data types (aircraft, profiler, rawinsonde, VAD (velocity azimuth display), GPS precipitable water, METAR, and mesonet) on short-range numerical forecasts is presented for winter and summer 10-day periods. A series of observation sensitivity experiments (OSEs) was conducted using the Rapid Up...
For high-accuracy geodetic applications, time-variable tropospheric propagation delay errors limit global positioning system real-time kinematic positioning accuracy. Potential improvements in positioning accuracy are evaluated by using the National Oceanic and Atmospheric Administration (NOAA) real-time tropospheric corrections (here...
GPS-IPW OBSERVATIONS AND THEIR ASSIMILATION INTO THE 20-KM RUC DURING SEVERE WEATHER SEASON
Devised scheme to correct GOES bias in GOES operational total precipitable water products
The National Environmental Satellite Data and Information Service (NESDIS) Geostationary Observational Environmental Satellite (GOES)-derived, total precipitable water (TPW) vapor product is routinely produced at NESDIS for Advanced Weather Interactive Processing System (AWIPS) users, primarily for National Weather Service (NWS) forecast offices...
Institutions Earth System Research Laboratory - ESRL National Oceanic and Atmospheric Administration - NOAA
Progress on FIM development toward membership in the North American Ensemble Forecast System
Institution National Oceanic and Atmospheric Administration - NOAA