Forecasting
Tool (GV - Generic Viewer)
Another product which we have recently developed
is Generic Viewer (GV). GV is a Weather Forecasting Workstation
dealing with all types of meteorological data: BUFR, GRIB,
Alphanumeric and Fax data. GV is a powerful display system for
Satellite Imagery, Telemetry, and Derived products (Water Vapor
Winds (WVW), Cloud Motion Vectors (CMV), Sea Surface Temperature
(SST), Vegetation Indices (VI), Himalayan Snow Cover (HSCAS),
Quantitative Precipitation Estimation (QPE) etc.
About GV
The purpose of the GenericViewer
application is to provide meteorologists and researchers with a
powerful tool to integrate all the weather data within the same
workstation. It provides the capability to visualize, analyze, and
combine various products with each other and with GIS data. The
resulting graphical products can be saved in different formats.
The application has the capability to interface with several sources
of data such as: GTS, WAFS, MDD, INSAT, IMDPS, METEOSAT, GOES, TIROS,
and EEC Radars. The GenericViewer Application is a Linux- PC based
solution and is designed around a core module completed with the
required Plug-in modules.
Core Module: The core module provides all the facilities for
display, screen navigation, file management and save facilities.
Plug-in Modules: These modules load all the facilities specific to
the ingested data type. They provide the application with the
following facilities:
• Interfaces to decode and read the information from the ingested
data.
• Query dialog interfaces to display the data.
• Analysis dialog interfaces or programs specific to the data
type.
System Description
Application Functionality:
The applicaion consists of a multiple data type
and is able to analyze a full range of meteorological
data: Conventional, gridded numerical forecast, radar and satellite
data.
- Accesses and analyzes the following satellite
data sets: GOES, METEOSAT, TIROS, INSAT, etc...
- Accesses and analyzes GIS data format from
GRASS or other GIS packages.
- Performs standard meteorological analysis
programs for conventional observation and grid-point data
- Has a full navigation display and earth
positioning is available for every point on the screen.
- Has multi-visualization capabilities to
analyze data into grid-point data and transform it into image
visualization.
- Performs graphic overlays and data
combination of all the supported data.
- Supports re-mapping of images into other
coordinate projections.
- Supports multi-frames and windows for image
and graphic display along with multiple windows fortext.
- Has the capabilities to store images and
graphics in internal memory for quick redisplay and for
combining displays into an animation.
- Provides a schedule and pre-programmed macros
to allow automatic analyses at a user specified time.
Environment Specification:
Based on Linux platform. It can access local and remote data from
network file systems and SQL databases on any platform. Designed to
be multilingual. The application is Web enabled; it does produce Web
supported product formats (html, gif, jpeg). In the future version,
we plan to develop a Web interface to query and retrieve the
generated products.
Supported Data Inputs:
- Met Products WMO Alphanumeric Bulletins, GRIB,
BUFR, Satellite Images from INSAT, METEOSAT, GOES and TIROS,
Derived Satellite products, NEXDAR products, etc…
- GIS Data: Oceanography, Topography, River
Basins, Roads, Ground Occupation, Political Boundaries,
etc...
Product Outputs:
The application generates the following as displays and printouts:
- Displays: Multi- windows display, Text and
Graphical display, Gray scale and full color display
- Printouts: Selectable paper size, Postscript
files, Generates HPGL for HP Design Jet Plotter, Generates GIF,
TIFF, JPEG, HTML, PCX, HDF formats, Generates Shapefile format
for GIS interface.
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