Local Analysis and Prediction System LAPS

1
Local Analysis and Prediction System (LAPS)
Purpose/History Design Implementation
Details Dan Birkenheuer Forecast Systems
Lab Boulder, CO birk_at_fsl.noaa.gov
2
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

3
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

4
Operational Concept

• Data layer
• Standard netCDF format file interface
• Portable core
• Sun
• IBM
• Linux
• Dec
• HP
• Model interface
• RAMS
• MM5

5
(No Transcript)
6
4DDA scheme for RSA
7
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.

8
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/BOUs AWIPS system
• Demonstrates utility, reliability in a real-time
  forecasting environment
• Long-term goal enable local modeling
  capabilities in AWIPS for all WFOs

9
Three local model implementation options for AWIPS
WSR
External provider
cp2
ws1
SBN
cp1
ws2
LDAD subnet
firewall
workstation subnet
ds1
ds2
as3
any computer
as1
as2
10
Local Modeling Example Kennedy domain
Image is temperature, contour is precipitation
11
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

12
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 AFWAs SP-2
• Variational quasigeostrophic balance constraint

13
AFWA Example over South America
14
AFWA Example over Europe
15
Where we are going...