fa بررسی اثر توپوگرافی در تشکیل خرده نواحی آب و هوایی مناطق خزری تخصصي Special كاربردي Applicable <span style="font-size:11pt"><span style="line-height:normal"><span style="direction:rtl"><span style="unicode-bidi:embed"><span style="font-family:Calibri,sans-serif"><a name="_Hlk134052192"><span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">بررسی و شناخت نوع آب و هوای یک منطقه و عناصر غالب و موثر آن، تعیین کننده اقلیم آن منطقه خواهد بود. آب</span></span></a> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">و</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">هوا</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">از</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">یک</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">محل</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">تا</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">محل</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">دیگر</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">متغیر</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">است</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">زیرا</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">عناصر</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">و</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">عوامل</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">آب و</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">هوایی،</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">در</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">هر</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">محل</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">شرایط</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">خاص</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">خود</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">را</span></span> <span lang="AR-SA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">دارند.</span></span><span lang="FA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:"> فقدان اطلاع از خرده اقلیم های نواحی، برنامه ریزی های اقتصادی و کشاورزی انسان را با شکست مواجه می&shy;سازد. به طور کلی اقلیم یک منطقه، متوسط وضعیت هوا در آن منطقه است و دسترسی به متوسط وضعیت هوا در یک مکان خاص، نیازمند آمار و اطلاعات درازمدت هواشناسی است</span></span><a name="_Hlk134052206"></a><span lang="FA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:">. برای دریافت شناخت صحیح و جامع از اقلیم منطقه خزری، پهنه&shy;بندی اقلیمی با روش های نوین آماری مانند تحلیل عاملی و تحلیل خوشه&shy;ای طی دوره 23 ساله (1990-2012) انجام شد. برای این منظور تعداد 26 متغیر اقلیمی از 16 ایستگاه هواشناسی انتخاب گردید. سپس با استفاده از مدل رقومی ارتفاع، بین پارامترهای هواشناسی و لایه مذبور یک رابطه رگرسیونی چند متغیره اعمال گردید که در نهایت یک ماتریس پهنه ای به ابعاد 26&times;242 به دست آمد و مبنای ناحیه بندی قرارگرفت.</span></span><span lang="FA" style="font-size:13.0pt"><span b="" lotus="" style="font-family:"> <a name="_Hlk134052229">بررسی اقلیم منطقه با روش تحلیل عاملی نشان&nbsp; می&shy;دهد که اقلیم استان ساخته&shy;ی 3 عامل است، این عوامل به ترتیب اهمیت عبارتند از: دمایی، بارشی و بادی-تندری می باشد. نتایج حاصل از تحلیل خوشه ای بر روی 3 عامل اقلیمی، وجود 4 ناحیه را در منطقه خزری نشان می&shy;دهد. یافته ها حاکی از آن است که 2 عامل اول و دوم به تنهایی 84 درصد رفتار اقلیمی را در منطقه تبیین می&shy;نمایند</a></span></span><span dir="LTR" style="font-size:13.0pt"><span new="" roman="" style="font-family:" times="">.</span></span><span lang="FA" style="font-size:13.0pt"><span style="font-family:"B Lotus""></span></span></span></span></span></span></span><br> &nbsp; <pre style="text-align:justify"> <span style="font-size:10pt"><span style="line-height:115%"><span courier="" new="" style="font-family:"><span lang="EN" style="font-size:13.0pt"><span style="background:yellow"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="background-color:#ffffff;">Investigating and knowing the type of climate of a region and its dominant and effective elements will determine the climate of that region.</span></span></span></span></span><span style="background-color:#ffffff;"> </span><span lang="EN" style="font-size:13.0pt"><span style="background:yellow"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="background-color:#ffffff;">The weather varies from one place to another because the weather elements and factors have their own conditions in each place.</span></span></span></span></span><span style="background-color:#ffffff;"> </span><span lang="EN" style="font-size:13.0pt"><span style="background:yellow"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="background-color:#ffffff;">The lack of information about the sub-climates of the regions makes human economic and agricultural planning fail.</span></span></span></span></span><span style="background-color:#ffffff;"> </span><span lang="EN" style="font-size:13.0pt"><span style="background:yellow"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="background-color:#ffffff;">In general, the climate of a region is the average weather condition in that area, and accessing the average weather condition in a specific place requires long-term meteorological statistics and information.</span></span></span></span></span><span style="background-color:#ffffff;"> </span><span lang="EN" style="font-size:13.0pt"><span style="background:yellow"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="background-color:#ffffff;">In order to obtain a correct and comprehensive understanding of the climate of the Caspian region, climate zoning was carried out with new statistical methods such as factor analysis and cluster analysis during a period of 23 years (1990-2012).</span></span></span></span></span><span style="background-color:#ffffff;"> </span><span lang="EN" style="font-size:13.0pt"><span style="background:yellow"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="background-color:#ffffff;">For this purpose, 26 climate variables were selected from 16 meteorological stations.</span></span></span></span></span><span style="background-color:#ffffff;"> </span><span lang="EN" style="font-size:13.0pt"><span style="background:yellow"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="background-color:#ffffff;">Then, using the digital height model, a multi-variable regression relationship was applied between the meteorological parameters and the mentioned layer, and finally a zone matrix of 242 x 26 dimensions was obtained and was used as the basis for zoning.</span></span></span></span></span><span style="background-color:#ffffff;"> </span><span lang="EN" style="font-size:13.0pt"><span style="background:yellow"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="background-color:#ffffff;">Investigating the climate of the region with the method of factor analysis shows that the climate of the province is made up of 3 factors, these factors in order of importance are: temperature, precipitation and wind-thunderstorm.</span></span></span></span></span><span style="background-color:#ffffff;"> </span><span lang="EN" style="font-size:13.0pt"><span style="background:yellow"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="background-color:#ffffff;">The results of cluster analysis on 3 climatic factors show the existence of 4 regions in the Caspian region.</span></span></span></span></span><span style="background-color:#ffffff;"> </span><span lang="EN" style="font-size:13.0pt"><span style="background:yellow"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="background-color:#ffffff;">The findings indicate that the first and second factors alone explain 84% of the climate behavior in the region.</span></span></span></span></span><span style="font-size:13.0pt"><span style="background:yellow"><span style="line-height:115%"><span style="font-family:"Times New Roman",serif"></span></span></span></span></span></span></span></pre> پهنه‌بندی اقلیمی, ناحیه خزری, تحلیل عاملی, تحلیل خوشه‌ای, مدل رقومی ارتفاع climate zoning, Caspian region, factor analysis, cluster analysis, digital elevation model 111 127 http://geographical-space.iau-ahar.ac.ir/browse.php?a_code=A-10-3819-1&slc_lang=fa&sid=1 sayeh paydari تهمینه چهره آرا ta_ch_55_ir@yahoo.com 100319475328460023046 100319475328460023046 No Qazvin, Payame Noor University دانشگاه پیام نور قزوین somayeh hajivandpaydari سمیه حاجیوند پایداری sayeh9294@gmail.com 100319475328460023047 100319475328460023047 Yes Kharazmi University دانشگاه خوارزمی