Desktop Weather-Forecast System Jim Kinter, Mike Fennessy, Brian Doty and J. Shukla Center for Ocean-Land-Atmosphere Studies
Desktop Weather-Forecast System Acknowledgements NOAA/NWS/NCEP Environmental Modeling Center – data sets, Eta model Fedor Mesinger (NCEP/EMC) – Eta model Dusan Jovic (ICTP) – Desktop version of Eta model Oreste Reale (COLA) – Processing/display of Eta model output Lennart Bengtsson (MPI) – Discussions and encouragement Brian Doty (COLA) – COLA server development and data Joe Wielgosz (COLA) – COLA server development Curt Steinmetz (COLA) – Linux installation and support Jennifer Adams (COLA) – Gr. ADS script development and support Tom Wakefield (COLA) – PC support
Desktop Weather Forecasting NCEP COLA Global Weather Forecasts Gr. ADS-DODS Server WWW Region-Specific Lateral BCs PC-Based Regional NWP
Desktop Weather-Forecast System Enables real-time weather forecasts, regional climate analysis and meteorological education and training through: – Easy access to real-time initial and boundary conditions data – Easy configuration of regional NWP model for any locality in the world – Readily available, low-cost personal computing hardware/software – Moderate speed Internet connection
Desktop Weather-Forecast System Ease of use: – Point and click interface to set up region the first time – Automated access to NOAA/NWS/NCEP global NWP model output for – Atmospheric initial conditions – Initial soil wetness, snow – Surface boundary conditions (SST, sea ice) and lateral boundary conditions (circulation) – Automated linkage to powerful desktop display program to see results of forecast – Full documentation for getting data, running forecast Demonstrated live in March 2001 at International Monsoon Conference in New Delhi
Desktop Weather-Forecast System Elements: – Desktop or laptop PC running Linux w/Fortran compiler – Moderate speed Internet connection – Grid Analysis and Display System (Gr. ADS) for data acquisition and display – Gr. ADS-DODS server providing real-time global weather observations and forecast data – Regional NWP model, e. g. , desktop version of NCEP Meso model, that uses real topography, soil and vegetation data
Desktop Weather-Forecast System Elements: – Desktop or laptop PC running Linux w/Fortran compiler – Moderate speed Internet connection – Grid Analysis and Display System (Gr. ADS) for data acquisition and display – Gr. ADS-DODS server providing real-time global weather observations and forecast data – Regional NWP model, e. g. , desktop version of NCEP Meso model, that uses real topography, soil and vegetation data
Desktop Weather-Forecast System Elements: – Desktop or laptop PC running Linux w/Fortran compiler – Moderate speed Internet connection – Grid Analysis and Display System (Gr. ADS) for data acquisition and display – Gr. ADS-DODS server providing real-time global weather observations and forecast data – Regional NWP model, e. g. , desktop version of NCEP Meso model, that uses real topography, soil and vegetation data
Gr. ADS and DODS Data Interoperability Distributed Data Distributed Analysis
Gr. ADS-DODS Server (GDS) Joe Wielgosz, Brian Doty, James Gallagher, Daniel Halloway Gr. ADS Jennifer Adams, Reinhard Budich, Luigi Calori, Brian Doty, Wesley Ebisuzaki, Mike Fiorino, Tom Holt, Don Hooper, Jim Kinter, Steve Lord, Gary Love, Karin Meier, Matt Munnich, Uwe Schulzweida, Arlindo da Silva, Michael Timlin, Pedro Tsai, Brian Wilkinson, Katja Winger
Information Technology: Gr. ADS Visualizing Maps, Charts, Animations Interactive Quantitative INTEGRATED USER INTERFACE Analyzing Expressions, Functions of Original Variables User Definable, Extensible Accessing, Subsetting General slices of { 4 D Grids In Situ Obs Images Arbitrary Domains Optimized for Typical Queries
Gr. ADS Usage • “Natural” user interface for scientific computations, and graphical production – Used at over 100 laboratories worldwide – Used by over 1000 scientists worldwide – E. g. , J. Climate - Over ½ of all figures (and computations? ) produced using Gr. ADS • Handles GRIB, binary (model output) formats in “native” mode – Widely used for analysis and display of data from the National Weather Service, other WMO sources
Gr. ADS Analysis Model ENABLES VERY SOPHISTICATED ANALYSIS TASKS IN A HIGHLY ENCAPSULATED WAY Scientists only need to specify: • dimension constraint • list of data sets • Gr. ADS expression This unique, innovative approach to geophysical data analysis is the major reason for Gr. ADS’ popularity.
Gr. ADS-DODS Analysis Server datasets in any format supported by Gr. ADS data GRIB data Net. CDF data etc. . performs analysis operations manages sessions, translates dataset names Gr. ADS batch mode interface code Result cache holds temporary data (uploaded, generated by a previous operation, or transferred directly from another server) for use in remote analysis supports extended request types for analysis, upload DODS server libraries Java servlet internet DODS data and requests Client Encapsulated Analysis Requests DODS client libraries data appears to client as local file, in a standard format (i. e, Net. CDF, etc. ) Joe Wielgosz: 5/25/00 Gr. ADS Matlab IDL etc. .
Summary: Gr. ADS-DODS Server • Share data: Enterprise-wide; Internet-wide --data-format independent • Data interoperability: Consistent metadata for many data types • Distributed analysis: Reduces network load; improves interactivity • Automation of analysis techniques: Analysis techniques can be captured in the form of scripts and provided on server and/or client
Desktop Weather-Forecast System Elements: – Desktop or laptop PC running Linux w/Fortran compiler – Moderate speed Internet connection – Grid Analysis and Display System (Gr. ADS) for data acquisition and display – Gr. ADS-DODS server providing real-time global weather observations and forecast data – Regional NWP model, e. g. , desktop version of NCEP Meso model, that uses real topography, soil and vegetation data
NCEP/EMC Eta Model • • • Limited-area Mesoscale Model Full Primitive Equations Eta Vertical Coordinate Step-like Treatment of Orography Sub-Grid Scale Physics » » Deep and Shallow Convection Radiation Turbulence Cloud Liquid Water
Eta-25 22 July 2002 SSM/I Eta-25 23 July 2002 SSM/I Eta-25 24 July 2002 SSM/I
Running the Desktop Weather Forecast System • Interactive – First time for a new domain – – – Select the domain Select grid resolution Check grid visually Select starting date, time, length of forecast Forecast starts automatically When forecast complete, view forecast weather maps • Routine operation – Set starting date, time and length in run script – Run forecast and view forecast weather maps
Running the Desktop Weather Forecast System • Interactive – First time for a new domain – – – Select the domain Select grid resolution Check grid visually Select starting date, time, length of forecast Forecast starts automatically When forecast complete, view forecast weather maps • Routine operation – Set starting date, time and length in run script – Run forecast and view forecast weather maps
Running the Desktop Weather Forecast System • Interactive – First time for a new domain – – – Select the domain Select grid resolution Check grid visually Select starting date, time, length of forecast Forecast starts automatically When forecast complete, view forecast weather maps • Routine operation – Set starting date, time and length in run script – Run forecast and view forecast weather maps
Specify grid resolution 15 km 40 km 20 km 50 km 25 km 80 km
Running the Desktop Weather Forecast System • Interactive – First time for a new domain – – – Select the domain Select grid resolution Check grid visually Select starting date, time, length of forecast Forecast starts automatically When forecast complete, view forecast weather maps • Routine operation – Set starting date, time and length in run script – Run forecast and view forecast weather maps
Yes No
Running the Desktop Weather Forecast System • Interactive – First time for a new domain – – – Select the domain Select grid resolution Check grid visually Select starting date, time, length of forecast Forecast starts automatically When forecast complete, view forecast weather maps • Routine operation – Set starting date, time and length in run script – Run forecast and view forecast weather maps
Specify month of initial time Jan Apr Jul Oct Feb May Aug Nov Mar Jun Sep Dec
Specify day of initial time 1 6 11 16 21 26 2 7 12 17 22 27 3 8 13 18 23 28 4 9 14 19 24 29 5 10 15 20 25 30 31
Specify hour of initial time 00 Z 06 Z 12 Z 18 Z
Specify length of forecast 6 hrs 24 hrs 36 hrs 48 hrs 72 hrs
Running the Desktop Weather Forecast System • Interactive – First time for a new domain – – – Select the domain Select grid resolution Check grid visually Select starting date, time, length of forecast Forecast starts automatically When forecast complete, view forecast weather maps • Routine operation – Set starting date, time and length in run script – Run forecast and view forecast weather maps
******************************** *** A forecast for ‘INDI' will now be started *** *** With center lon, lat: 81 E, 17 N *** Width in longitude: 46 *** Width in latitude: 37 *** *** At resolution = 80 km *** *** Starting from 12 Z 03 SEP 2002 *** for 72 hours **********************************
Running the Desktop Weather Forecast System • Interactive – First time for a new domain – – – Select the domain Select grid resolution Check grid visually Select starting date, time, length of forecast Forecast starts automatically When forecast complete, view forecast weather maps • Routine operation – Set starting date, time and length in run script – Run forecast and view forecast weather maps
Running the Desktop Weather Forecast System • Interactive – First time for a new domain – – – Select the domain Select grid resolution Check grid visually Select starting date, time, length of forecast Forecast starts automatically When forecast complete, view forecast weather maps • Routine operation – Set starting date, time and length in run script – Run forecast and view forecast weather maps
Скачать презентацию Desktop Weather-Forecast System Jim Kinter Mike Fennessy Brian
ea92a182f5fc222119ef66b357c2b1ca.ppt