Document: NUREG-0800
Document ID: b82533b2-f9f2-45b2-bbed-bdbb41b07adb
Document Type: srp
Title: REGIONAL CLIMATOLOGY
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340567.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.3.1
CFR Part: 
CFR Title: 

Content:
ions. 6. Freezing rain estimates should be based on representative NWS station data. 7. High air pollution potential information should be based on U.S. Environ- mental Protection Agency (EPA) studies (Ref.. 12, 13). 8. All other meteorological and air quality data used for safety-related plant design and operating bases should be documented and. substantiated. III. REVIEW PROCEDURES 1. General Climate The general climatic description of the region in which the site is located is reviewed for completeness and authenticity. -Climatic param- eters such as air masses, general airflow, pressure patterns, frontal systems, and temperature and humidity conditions reported by the appli- cant are checked against standard references (Ref. 4 and 5) for appro- priateness with respect to location and period of record. The applicant's description of the role of synoptic-scale atmospheric processes on local (site) meteorological conditions .is checked against the descriptions provided in References 5 and 6. 2. Regional Meteorological Averages and Extremes Since meteorological averages and extremes can only be obtained from stations in the region of the site which have long periods of record, and the stations are.not usually yery close to the site, a determination of the representativeness of the data to site conditions is the primary concern in the review. A determination of the adequacy of the stations and their data is also made. Recorded meteorological averages and extremes are checked against standard publications such as Reference 6. Snow and ice load adequacy is checked for reasonableness against ANSI A58.1-1972 (Ref. 9) and regional data available in References 5, 6 and 7. References 5 and 6 provide informa- tion on other averages and extremes. References 12 and 13 provide infor- mation on high air pollution potential for verification. Extreme winds and the specific vertical velocity distribution are checked against References 9 and 10. -Gust factors are checked against