Skip to main content

Odor Modeling with Updated Meteorological Data: A Comparison of H2S Impacts using Standard Hourly ASOS and 1-minute ASOS Data

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

Due to the temporal and subjective nature of odors, odor modeling techniques have tended to be project specific. When used in the regulatory arena, odor modeling for compliance with odor standards and criteria have traditionally used models developed for and approved by federal, state, and local regulatory agencies. One critical model input that may play an important role in characterizing the short-term impacts often used for odor is the hourly meteorological data. Traditionally, this hourly data has been a single reading of wind speed, wind direction, etc. taken just before or after the hour, which was then used as a representative value for that hour of wind parameters. Recently, the national Climatic Data Center has begun archiving much shorter-term (2-minute) average wind speeds and reporting this data every minute of the hours. There has been concern that use of this new “1-minute” ASOS (Automated Surface Observations System) data in modeling might result in different modeling results and conclusions than found previously using the traditional hourly meteorological data especially in areas where there is the likelihood of a large number of calm conditions, and where the wind conditions are variable. The objective of the study presented in this paper is to explore this issue, especially as it pertains to odor assessment at wastewater treatment facilities.

Three different municipal wastewater treatment plants – one in a densely populated urban area, one in a suburban setting, and the third in a relatively sparsely populated area in the southwest were evaluated. The three facilities include a variety of source types, including point, area, and volume sources, representative of the different processes at such facilities. All three plants were modeled for H2S using standard hourly average meteorological data. In this study, the three facilities were remodeled using the 1-minute ASOS data, and the results compared to those found using the standard hourly meteorological data. The results of the study are presented both in tabular format and in the form of isopleths showing lines of constant concentration, and the implications of the new meteorological data on the potential conclusions in going from one form of meteorological data to the other is discussed.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2012-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more