نوع مقاله : مقاله علمی - پژوهشی

نویسندگان

گروه مهندسی محیط زیست، دانشکده علوم محیطی، دانشگاه حکیم سبزواری، سبزوار، ایران

چکیده

آلودگی هوا، یک تهدید جهانی برای بهداشت عمومی و محیط ­زیست، به­ ویژه در مناطق شهری است. از این رو برای کنترل و برنامه­ ریزی غلظت آلاینده ­ها از مدلسازی استفاده می ­شود. در این مقاله یک مدل بر مبانی رگرسیون خطی به منظور پیش­ بینی کوتاه­ مدت CO، PM10 و O3 بر حسب پارامترهای هواشناسی ارائه شده است. داده ­های پارامترهای هواشناسی شامل رطوبت، فشار، حداقل و حداکثر دما و سرعت باد (سازمان هواشناسی بیرجند) و داده ­های آلودگی هوا (غلظت CO ،PM10 و O3) از اداره کل محیط زیست بیرجند، تهیه و به صورت میانگین روزانه استفاده شد. برای مدلسازی رگرسیون خطی از نرم ­افزار SPSS.16 استفاده گردید. نتایج بدست آمده نشان داد که بیشترین ضریب همبستگی برای آلاینده CO با حداقل درجه حرارت، 53/0 و کم­ترین ضریب همبستگی با مقدار 166/0 بود. بیشترین ضریب همبستگی آلاینده PM10 با سرعت باد، 33/0 و کم ترین ضریب همبستگی این آلاینده با فشار، 082/0 بدست آمد. بیشترین ضریب همبستگی آلاینده O3 با حداکثر درجه حرارت، 50/0و کم­ترین ضریب همبستگی این آلاینده با جهت باد، 09/0 بدست آمد. هم­چنین نتایج حاصل از مدل رگرسیون برای آلاینده مونوکسیدکربن در مقایسه با دو آلاینده دیگر، بهتر بود.

کلیدواژه‌ها

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