عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
شماره کتابشناسی ملی
شماره
TL53312
زبان اثر
زبان متن نوشتاري يا گفتاري و مانند آن
انگلیسی
عنوان و نام پديدآور
عنوان اصلي
A Synoptic Approach to the South Asian Monsoon Climate
نام عام مواد
[Thesis]
نام نخستين پديدآور
Islam, Md Rafiqul
نام ساير پديدآوران
Sheridan, Scott
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
Kent State University
تاریخ نشرو بخش و غیره
2020
يادداشت کلی
متن يادداشت
173 p.
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
Ph.D.
کسي که مدرک را اعطا کرده
Kent State University
امتياز متن
2020
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
Understanding the South Asian seasonal cycle is important. Using a synoptic climatological approach to identify circulation patterns, using the self-organizing maps (SOMs) technique, this research successfully has demonstrated several novel aspects of the seasonal cycle. First, it identifies the south Asian seasonal cycle showing the general climatology in the context of spatio-temporal variation. Second, this research provides an objective estimation of onset and withdrawal dates for four determined seasons (winter, pre-monsoon, monsoon, and post-monsoon). Third, this dissertation provides an understanding of the different possible monsoon mechanisms across the seasons by analyzing multiple atmospheric layers and potential feedback. Categorizing atmospheric patterns individually for each of five surface variables (sea-level pressure, wind, temperature, relative humidity, and precipitation), a 9x9 SOM was created using surface-level data obtained from the NCEP/NCAR Reanalysis 1 project. Nodes are assigned to seasons, as well as seasonal transitions, based on defined standard criteria, and the seasons on the SOMs were determined and partitioned based on their temporal variations. A complete reversal of mean sea-level pressure over the course of the year, with high pressure over the land in winter and low pressure in the summer, and a clear seasonal cycle in wind directions have been observed. The monsoon season can be identified as starting earlier using variables other than precipitation, substantiate prevailing precondition of the atmospheric circulation prior to monsoonal rainfall. The pressure gradient due to land-sea thermal contrast and the movement of ITCZ lead other effective climatological features in different atmospheric layers, are the most important driving force for monsoon circulation.
اصطلاحهای موضوعی کنترل نشده
اصطلاح موضوعی
Atmospheric sciences
اصطلاح موضوعی
Climate change
اصطلاح موضوعی
Geography
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )
مستند نام اشخاص تاييد نشده
Islam, Md Rafiqul
نام شخص - ( مسئولیت معنوی درجه دوم )
مستند نام اشخاص تاييد نشده
Sheridan, Scott
شناسه افزوده (تنالگان)
مستند نام تنالگان تاييد نشده
Kent State University
دسترسی و محل الکترونیکی
نام الکترونيکي
مطالعه متن کتاب وضعیت انتشار
فرمت انتشار
p
اطلاعات رکورد کتابشناسی
نوع ماده
[Thesis]
کد کاربرگه
276903
اطلاعات دسترسی رکورد
سطح دسترسي
a
تكميل شده
Y
