Steve Ansari, Stephen Del Greco, Brian Nelson, Helen Frederick NOAA / NCDC
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86 th Annual American Meteorological Society Me Atlanta, Georgia January 29 – February 2, 1 The Severe Weather Data Inventory (SWDI): Spatial Query Tools, Web Services and Data Portals at NOAA’s National Climatic Data Center Steve Ansari, Stephen Del Greco, Brian Nelson, Helen Frederick NOAA / NCDC
description
The Severe Weather Data Inventory (SWDI): Spatial Query Tools, Web Services and Data Portals at NOAA’s National Climatic Data Center. Steve Ansari, Stephen Del Greco, Brian Nelson, Helen Frederick NOAA / NCDC. Goals. Inventory for Severe Weather Data Geospatial Database solution Modular! - PowerPoint PPT Presentation
Transcript of Steve Ansari, Stephen Del Greco, Brian Nelson, Helen Frederick NOAA / NCDC
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 20061
The Severe Weather Data Inventory (SWDI):
Spatial Query Tools, Web Services and Data Portals at NOAA’s National Climatic Data Center
Steve Ansari, Stephen Del Greco, Brian Nelson, Helen FrederickNOAA / NCDC
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 20062
Goals
• Inventory for Severe Weather Data
• Geospatial Database solution
• Modular!
• Unique spatial dataset relationship
• Multiple user access methods
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 20063
Data
NEXRAD Level-III
• Hail, Mesocyclone, and Tornado
• Data from 1991 – Present
• Estimates for hail size, wind shear, heights, etc…
• All searchable!
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 20064
Data
NEXRAD Level-III Hail Product
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 20065
Data
NEXRAD Level-III Mesocyclone Product
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 20066
Data
NEXRAD Level-III Tornado Product
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 20067
Data
NEXRAD Level-II
• Generate products with WDSS-II
• Hail, Mesocyclone, and Tornado
• Different Algorithms (NSSL vs. NWS)
• Reprocess Data from 1991 – Present
• 1000 terabytes!
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 20068
Data
NEXRAD Level-II – WDSS-II Display
Image courtesy of Travis Smith, NSSL/CIMMS
http://www.wdssii.org
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 20069
Data
NCDC Storm Events Database
• Text reports from NWS and Storm Prediction Center.
• Data from 1950 – Present
• Tornado, Hail, Lightning, Wind, etc…
• Fatalities, Injuries, Crop/Property Damage
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200610
Data
NCDC Storm Events Database
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200611
Data
Vaisala’s National Lightning Detection Network (NLDN)
• 130 Sensors Nationwide
• 1995 – Present
Images courtesy of NASA (http://thunder.msfc.nasa.gov/primer/primer3.html)
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200612
Process
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200613
Geospatial Database
• Oracle Spatial Extension
• Adds GIS functionality to Oracle database
• Links all spatial datasets together
“Select all NLDN within 50 miles of ATL between 20050819 18:00Z and 20050819 22:00Z”
“Select all Hail > 1” within Fulton County”
+
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Atlanta, Georgia January 29 – February 2, 200614
Access
Web Pages
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Atlanta, Georgia January 29 – February 2, 200615
Access
Data Download
• Shapefile, NetCDF, Text File
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200616
Access
Web Map Server / Web Feature Server (WMS/WFS)
• Direct access from GIS Clients
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200617
Access
SOAP Web Services
• Programmatic access to data
• Allows integration into custom applications
• System and language independent
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200618
Analysis
• Comparison between datasets
“Select all TVS between 20050810 0:00Z and 20050811 0:00Z where there are no NLDN within 10 miles”
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200619
Analysis
• Event Study
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200620
Analysis
• Disaster Mitigation
• Example:Compare 1 Hour of NLDN to Population Grid
Data: NLDN 08/02/2005 20:00 – 21:00 UTCGridded Population of the World - SEDAC (Socioeconomic Data and Applications
Center at Columbia University)http://sedac.ciesin.columbia.edu/gpw
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200621
Analysis
• Example:
Compare 1 Hour of NLDN to Population Grid
Process:
1. Download 2000 Population Grid at
~4 km resolution.
2. Convert cell centroids to points
3. Subset data for Florida
4. Spatial Join to closest NLDN data
5. Examine matching population grid cells
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200622
Example Analysis
• Process: Download 2000 Population Grid (~12 km resolution).
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200623
Example Analysis
• Process: Convert cell centroids to points, subset for Florida.
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200624
Example Analysis
• Process: Spatially join to NLDN data based on distance.
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200625
Example Analysis
Total Population Affected = 696,179 --- 5 Strikes or More = 166,346
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200626
Conclusion
The Severe Weather Data Inventory:• Modular GIS spatial database approach• Datasets remain independent• Multiple user access methods• Improve disaster response, recovery and
mitigation.• Many possibilities of application.• Free!
86th Annual American Meteorological Society Meeting
Atlanta, Georgia January 29 – February 2, 200627
Future Plans2006
2007
Finish decoder software.Start populating database with current data.
(NEXRAD, Storm Data and NLDN)
Web page access / Data Export
Reprocess historical data
Advanced user access (WMS/WFS/SOAP)
Contact:
(828) 271-4611
151 Patton Ave.
Asheville, NC 28801
