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daniel L. birkenheuer

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Corresponding Articles: 15

Daniel L. Birkenheuer authored and/or contributed to the following articles/publications.

Issues Associated with the Assimilation of Ground-based GNSS Observations into Atmospheric Models

Data assimilation is a widely used physically-based technique to combine information derived from observations with an estimate (i.e. guess or prediction) of what the environment would look like without the new information. The latter is usually referred to as “the background,” and in numerical weather prediction this is usually derived from a ...

daniel L. birkenheuer

Improvements in GOES/GOES-R water vapor calibration and validation

The calibration and validation (Cal/Val) of GOES-R moisture products will be challenging primarily for two reasons. The first is that temperature and humidity retrievals using the limited number of infrared channels on the Advanced Baseline Imager (ABI) will require the use of a numerical weather prediction model to provide the first guess for p...

daniel L. birkenheuer

NASA Cold Land Processes Experiment (CLPX 2002-2003): Atmospheric Analyses Datasets

This paper describes the Local Analysis and Prediction System (LAPS) and the 20-km horizontal grid version of the Rapid Update Cycle (RUC20) atmospheric analyses datasets, which are available as part of the Cold Land Processes Field Experiment (CLPX) data archive. The LAPS dataset contains spatially and temporally continuous atmospheric and surf...

daniel L. birkenheuer

The initial formulation of a technique to employ gradient information in a simple variational minimization scheme

In 1989, when the first version of the Local Analysis and Prediction System (LAPS) emerged from the drawing boards, it was equipped with a gradient analysis component to utilize satellite data structure. At that time, satellite data were not well calibrated and ancillary data were used to “anchor” the data field, while satellite gradients were t...

daniel L. birkenheuer

Direct use of satellite horizontal gradients in variational analysis

daniel L. birkenheuer

The meteorological role of the Global Positioning System in NOAA's integrated upper-air observing system

The U.S. Department of Defense developed the satellite-based Global Positioning System (GPS) to provide positioning, navigation and time-transfer information anywhere on Earth with high accuracy under all weather conditions. GPS is a “dual-use” system, in that its signals are available for both military and civilian applications free of user fee...

daniel L. birkenheuer

Mesoscale moisture transport by the low-level jet during the IHOP field experiment

Previous studies of the Low-Level Jet (LLJ) over the central Great Plains of the United States have been unable to determine the role that mesoscale circulations play in the transport of moisture. To address this issue, two aircraft missions during the International H2O Experiment (IHOP) were designed to closely observe two separate well-develop...

daniel L. birkenheuer

Calibration and Validation of Satellite Sensors at NOAA/NESDIS/ORA: Summary of Methods and Recent Results

The NESDIS Office of Research and Applications performs sensor calibration and data product validation (cal/val) for NOAA’s polar and geosynchronous operational environmental satellites, as well as for a number of non-NOAA spacecraft and instruments. This paper summarizes the scope of these efforts, describes some of the unique methods ...

daniel L. birkenheuer


The Local Analysis and Prediction System (LAPS) analyzes three-dimensional moisture and other state variables each hour (or less) over a high resolution relocatable domain. LAPS analyses have been used to initialize local-scale, high-resolution models such as the Colorado State University's Regional Atmospheric Modeling ...

daniel L. birkenheuer


daniel L. birkenheuer

Progress in applying GOES-derived data in local data assimilation

daniel L. birkenheuer

The effect of using digital satellite imagery in the LAPS moisture analysis

The Local Analysis and Prediction System (LAPS) analyzes three-dimensional moisture as one component of its system. This paper describes the positive impact that simple 8-bit, remapped, routinely available imagery have on the LAPS moisture analysis above 500 hPa. A variational method adjusts the LAPS moisture analysis by minimizing differences ...

daniel L. birkenheuer


daniel L. birkenheuer

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...

daniel L. birkenheuer
Institutions Earth System Research Laboratory - ESRL National Oceanic and Atmospheric Administration - NOAA

Real-Time Applications of the Variational Version of the Local Analysis and Prediction System (vLAPS)

The accurate and timely depiction of the state of the atmosphere on multiple scales is critical to enhance forecaster situational awareness and to initialize very short-range numerical forecasts in support of nowcasting activities. The Local Analysis and Prediction System (LAPS) of the Earth System Research Laboratory (ESRL)/Global Systems Divis...

daniel L. birkenheuer
Institution National Oceanic and Atmospheric Administration - NOAA