تبلیغات
اقلیم شناسی طوفان های گرد و غباری

اقلیم شناسی طوفان های گرد و غباری
Dust Storm Climatology 
لینک دوستان
A Dust Climatology of the Western United States
Abstract: A Dust Climatology of the Western United States is a historical publication archived at the National Climatic Data Center (NCDC). This publication was prepared by the NCDC for the U.S. Nuclear Regulatory Commission, Washington, D.C. The primary source of data used to product the publication was the original 'Record of Surface Weather Observations' from 180 selected stations from which the beginning and ending times of dust caused visibility values were extracted. 'Record of Surface Weather Observations' consisted of written observations that were sent to NCDC by U.S. National Weather Service, Federal Aviation Administration, and other first-order U.S. weather stations. Maps are presented depicting annual number of dust episodes, dust episode durations, season of occurrence, and probability of thunderstorm inducement. Narrative information provided includes dust storm characteristics and development, weather systems and dust storms, data and data analysis. Statistical data presented for each station are: 1. Number of hours with visibility less than 7, 3, 1, and 5/8 mile(s), 2. Number of episodes with visibility less than 7 and 5/8 mile(s), 3. Duration (hours) per episode visibility less than 7 and 5/8 mile(s), 4. Probability (%) thunderstorm with visibility less than 7 and 5/8 mile(s). The analyzed charts depict the following: 1. Geographical distribution of analyzed stations, 2. Annual average number of hours of dust episode visibility less than 7 miles, 3. Number of hours (1954) of dust episode visibility less than 7 miles, 4. Annual average number of hours of dust episode visibility less than 3 miles, 5. Annual average number of hours of dust episode visibility less than 1 mile, 6. Annual average number of hours of dust episode visibility less than 5/8 mile, 7. Annual number of dust episodes with visibility less than 7 miles, 8. Annual number of dust episodes with visibility less than 5/8 miles, 9. Average duration (hours) of dust episodes with visibility less than 7 miles, 10. Average duration (hours) of dust episodes with visibility less than 5/8 mile, 11. Average duration (hours) of the longest annual dust episode with visibility less than 5/8 mile, 12. Probability (%) of dust episodes with visibility less than 5/8 mile occurring during the primary season, 13. Primary season of dust episodes with visibility less than 5/8 mile, 14. Probability (%) of thunderstorm activity occurring with dust episode visibility less than 7 miles, 15. Probability (%) of thunderstorm activity occurring with dust episode visibility less than 5/8 mile.




[ جمعه 14 بهمن 1390 ] [ 10:57 ق.ظ ] [ محمود خسروی ]
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درباره وبلاگ

طوفان های گرد وغباری در سالهای اخیر در کانون توجه اقلیم شناسان قرار گرفته است.با توجه به اهمیت این پدیده در سلامت جوامع انسانی و محیط زیست این پایگاه تلاش دارد زمینه علمی را برای اطلاع رسانی و استفاده از آخرین روش های مطالعه این پدیده فراهم آورد.استفاده از مطالب این پایگاه با ذکر مآخذ برای عموم آزاد است.
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