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Local Analysis and Prediction System (LAPS) Purpose/HistoryDesign Implementation Details Dan Birkenheuer Forecast Systems Lab Boulder, CO birk@fsl.noaa.gov
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Purpose Forecasters were unable to review all data on a modern workstation Local data never is seen my national scale models –Doppler Radar data –Mesonet data
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Project Goals Development and maintenance of a high- resolution analysis and forecasting system exploiting local data Technology transfer to outside users Produce products for special needs Visualize output Perform this task in the local forecast office
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Operational Concept Data layer Standard netCDF format file interface Portable core –Sun –IBM –Linux –Dec –HP Model interface –RAMS –MM5
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4DDA scheme for RSA
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LAPS in AWIPS Analysis package is in every NWS forecast office. Current (4.2) implementation is fixed in domain size and position. AWIPS v5.0 will have a GUI to control size, position, plus displays of data sources, QC, etc.
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LAPS in AWIPS -- local model Scalable Forecast Model -- a version of CSU/RAMS, version 3b, parallelized by FSL (SMS) SFM runs 4 times per day on a dedicated computer installed on NWS/BOU’s AWIPS system Demonstrates utility, reliability in a real- time forecasting environment Long-term goal: enable local modeling capabilities in AWIPS for all WFOs
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cp1 cp2ws1 ws2 ds1 ds2 as3 firewall LDAD subnet workstation subnet any computer as1 as2 SBN Externalprovider WSR Three local model implementation options for AWIPS
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Local Modeling Example: Kennedy domain Image is temperature, contour is precipitation
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Air Force Weather Agency (AFWA) LAPS -- History 1996: Initialization for Bosnia window (MM5 at 101x101, 10 km, NOGAPS 2.5° background and LBC) 1997: Resizable, relocatable LAPS 1998: Balance package; GOES ingest; AVN/NOGAPS 1° 1999: 4DDA; rebuilt infrastructure; QG balance studies
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AFWA LAPS -- Current 9 theaters on three projections (lambert, polar stereo, mercator) 3-hr cycle New datasets: satellite soundings, cloud- drift winds, ACARS, METEOSAT 4DDA testing started March on AFWA’s SP-2 Variational quasigeostrophic balance constraint
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AFWA Example over South America
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AFWA Example over Europe
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Where we are going...
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