Webinar: AIR Now
and
Air Quality System (AQS)
July 13, 2011
Agenda
•
Introductions
–
Sarah Swenson, EPA (facilitator)
–
John E. White, EPA (presenter)
•
Format
–
EPA speaker (15 minutes)
–
overview of Air datasets
–
Lines are muted
-
submit questions as the speakers talk
–
Questions and Answers (15 minutes)
•
See the website:
epa.gov/appsfortheenvironment
1
Background about the Challenge
•
Apps must use EPA data and address one of EPA
Administrator Lisa Jackson’s Seven Priorities
•
Judged based on usefulness, innovativeness, and
usability
•
Submissions are due by September 16
•
Winners and runners up for Best Overall App and Best
Student App, plus People’s Choice
•
Recognition from EPA in Washington, D.C. in
November
•
Get more details at
epa.gov/appsfortheenvironment
2
AIRNow Web Services
Overview of Available Data
Prepared by
Steven A.
Ludewig
, Timothy S. Dye
Sonoma Technology, Inc.
Petaluma, CA
John E. White
U.S. Environmental Protection Agency
Research Triangle Park,
NC
3800
AIRNow Program Overview
AIRNow is the National system for acquiring and
distributing air quality observations and forecasts to the
public
•
Voluntary participation
•
130
federal, state, local, and tribal air
quality agencies)
•
Standardized
Air Quality Index (AQI)
•
Partnerships with national media
•
Air quality education and outreach
•
Emergency response (e.g., wildfires)
•
Exceptional Event
tools
•
EnviroFlash
The Air Quality Index
7
AIRNow Web Services:
Why Are They Needed?
•
Web Services provide a way to retrieve data and
information ‘on demand’ from the AIRNow system.
–
Forecasts
–
Action days
–
Observed data
–
Multiple format options including maps
–
Agency, reporting area, and monitoring site information
•
Uses
–
Agency websites, web developer access
–
Local news organizations
–
Other agencies
–
Schools and researchers
–
Spreadsheets and other applications
–
The public
8
A few potential uses
AIRNow Web Services
9
AIRNow Web Services
•
Where we’ve been
–
Simple Object Access Protocol (SOAP): not
as simple or clean as it sounds
•
Progress in 2009
–
A RESTful approach
•
The future
–
an AIRNow Application
Programming Interface (API)
–
Additional services, data sets, and formats
useful for building applications
–
An easier to use, well
-
documented interface
10
AIRNow Web Services:
A
RESTful
Approach
•
Example question: “What is the current air
quality forecast for my home town ZIP Code?”
–
URL:
http://ws.airnowgateway.org/GatewayWebService
REST/Gateway.svc/
forecastbyzipcode?key
=43321E
-
F56Q
-
B612
-
68FBN&zipcode=95401&format=
csv
•
Looks complicated, but let’s break it down
–
ForecastByZIPCode
= the name of this request*
–
Key = unique user key
–
ZIPCode
= ZIP Code of interest
–
Format = payload options (CSV, JSON, KML, XML, etc.)
–
Optional: Date = any date of interest (defaults to the
current date)
*a companion service exists for observed data:
ObservedByZIPCode
11
AIRNow Web
Services (example)
Use of
ForecastByZIPCode
and
ObservedByZIPCode
services by the EPA
MyEnvironment
website:
www.epa.gov/
myenvironment
and other state web sites
12
AIRNow Web Services
Use of a geospatial Web Coverage Service (WCS) by
Shasta County, CA:
http://www.co.shasta.ca.us/html/ResMgmt/AQ/aq_map.aspx
KML file
13
AIRNow Web Services
•
ForecastByZIPCode
•
ObservedByZIPCode
•
ForecastsByIssueDate
•
ActionDaysByDate
•
Ozone24HourAQI
•
PM25Mid24HrAQI
•
ReportingAreaMax
-
AverageAQI
•
SiteMaxAverageAQI
•
SiteInfoByAQSCode
•
AgencyGetSites
•
GetReportingAreas
Geospatial:
•
WCS
–
point
•
WCS
–
time series
Coming Soon:
•
WCS
–
grid
•
WMS
–
mapping service
Demonstration Tool
14
AIRNow Web Services
–
The Future
•
AIRNow API
–
Expanded library of services
–
Additional geospatial services
–
More payload options
–
Improved standardization
–
Extensive documentation
–
Online query generator tools
15
AIRNow Web Services
Thank You!
Contact:
Steven A. Ludewig
John E. White
(707) 665
-
9900
(919) 541
-
2306
steve@sonomatech.com
white.johne@epa.gov
Questions and Answers
Potential topics:
•
Questions about accessing or using AIR Now or AQS
data
•
How to submit ideas for apps
•
Ideas for future webinars
–
what datasets do you
want to learn about?
3
Next Steps
•
Check out our new webinar site to catch up on any you’ve missed!
•
Weekly webinars for the next 6 weeks
–
Wednesdays @ 2 PM EST
–
The next webinar is on Wednesday, July 20 at 2 PM eastern
–
Topic: EPA’s Water data! Check the website for registration info
•
Submit your apps by September 16
•
Check the website for the latest news and sign up for the listserv
(EPA App Developer Community)
•
Follow us on Twitter: #greenapps
•
Email us at
greenapps@epa.gov
4
Additional Resources
•
Apps for the Environment:
epa.gov/
appsfortheenvironment
•
AIR Now
–
http://airnowgateway.org/
–
http://www.airnow.gov/
–
Email your questions to
white.johne@epa.gov
•
Air Quality System
–
http://www.epa.gov/ttn/airs/aqsdatamart
–
Email your questions to
mangus.nick@epa.gov
•
Other Air Data
–
http://www.epa.gov/air/airpolldata.html
5
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