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پدیده ال نینو نوسان های جنوبی و پیش بینی بارش در ایران

پدیده ال نینو نوسان های جنوبی و پیش بینی بارش در ایران


در این سخنرانی ها دکتر امین شیروانی عضو هیئت علمی دانشگاه شیراز به موضوع بارش ماهواره¬ای TRMM و پیش¬بینی فصلی بارش در ایران به وسیله GCMs پرداخت و پدیده ال¬نینو نوسان¬های جنوبی و نقش آن در نوسان¬های بارش و دمای ایران به وسیله دکتر محمدجعفر ناظم السادات عضو هیئت علمی دانشگاه ... به گزارش پایگاه اطلاع رسانی صنعت آب و برق(پاراب) ، دکتر شیروانی ضمن ارائه اطلاعاتی در خصوص بارش ماهواره¬ای TRMM گفت: امروزه ماهواره ها با بهره گیری از امواج میکروویو فعال و غیر فعال رادار و سنسورهای عملگرا در نور مرئی و مادون قرمز، قادر به تخمین بارش برای اغلب مناطق دنیا هستند. وی با اشاره به اینکه هزینه های زیادی برای پرتاب، نگهداری و ذخیره سازی اطلاعات این ماهواره ها از سوی سازمان¬های فضایی در جهان پرداخت می شود افزود: این در حالی است که اطلاعات آنها به صورت برخط و رایگان در دسترس کاربران قرار دارد. از آنجا که تخمین بارش ماهواره ای در استان فارس در مقیاس زمانی ماهانه و سالانه از دقت خوبی برخوردار است، اطلاعات این ماهواره می تواند درتصمیم گیری های مدیریتی استان به کار گرفته شود. دکتر ناظم السادات نیز ضمن معرفی پدیده ال¬نینو نوسان¬های جنوبی (ENSO) خاطرنشان کرد: رخداد دوران¬گرم به نام ال نینیو و سرد به عنوان لانینا شناخته می شود و تا اندازه زیادی می¬تواند بارش در پهنه¬های گوناگون ایران را دستخوش تغییرات نماید. ناظم السادات به چیرگی دوران ال نینیو و لانینا در پاییز امسال اشاره کرد و افزود: این پدیده تا اندازه زیادی ابتدا افزایش و سپس کاهش منابع آبی این فصل را برای بیشتر بخش¬های کشور به همراه داشت؛ این در حالی است که برای فصل زمستان ارتباط معنی¬داری میان نوسان¬های بارش و چیرگی دوران ال نینیو و لانینا در برخی از گستره¬های کشور دیده نشده است. وی با تاکید بر اینکه میزان تاثیر این پدیده بر نوسان بارش در بخش¬های گوناگون کشور یکسان نیست اضافه کرد: چیرگی دوران لانینا، کاهش 20 تا 50 درصدی ال نینو و افزایش 20 تا70 درصدی بارش¬های فصل سرد استان¬های بوشهر، کهگیلویه و بویراحمد و جنوب فارس را به همراه داشته است در حالیکه در سایر بخش¬های جنوب غربی کشور نشان موثری از این پدیده بر نوسان بارش فصل سرد دیده نشده است

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New Year Message from the Chancellor of Shiraz University
New Year Message from the Chancellor of Shiraz University
On the occasion of the New Year, I extend my sincere greetings and best wishes to all faculty members, students, staff, alumni, and academic partners of Shiraz University. With appreciation for the efforts and achievements of the university community...
Commemoration Ceremony and Awarding of the First Qotb al-Din Shirazi Scientific Reward
Commemoration Ceremony and Awarding of the First Qotb al-Din Shirazi Scientific Reward
The commemoration ceremony and awarding of the first Qotb al-Din Shirazi Scientific reward in the field of astronomy and astrophysics was held on the second day of the National Astronomy and Astrophysics Conference, hosted by Shiraz University. This...
Launching of the National Astronomy Entrepreneurs Exhibition at Shiraz University
Launching of the National Astronomy Entrepreneurs Exhibition at Shiraz University
For the first time in the country, the Astronomy Entrepreneurs Exhibition was hosted at Shiraz University. According to the public relations office of Shiraz University, the exhibition coincided with the 18th National Astronomy and Astrophysics...
Signing Scientific and Technological Cooperation Agreements Between Shiraz University and Iraqi Universities
Signing Scientific and Technological Cooperation Agreements Between Shiraz University and Iraqi Universities
During the second meeting of the "Iran-Iraq Science Week," cooperation agreements were signed between Shiraz University and various Iraqi universities. According to the public relations office of Shiraz University, during the second "Iran-Iraq...
Dr. Zahra Riahi-Zamin has Won the Fourth Biennial Book Award of Fars
Dr. Zahra Riahi-Zamin has Won the Fourth Biennial Book Award of Fars
Dr. Zahra Riahi-Zamin, a Persian Language and Literature professor at Shiraz University, has been awarded the fourth Biennial Book Award of Fars. According to the Public Relations Office of Shiraz University, the awards ceremony took place on...
Unveiling the National Award for Women in Science of Iran (In Honor of Professor Afsaneh Safavi)
Unveiling the National Award for Women in Science of Iran (In Honor of Professor Afsaneh Safavi)
The National Award for Women in Science of Iran (In Honor of Professor Afsaneh Safavi) has been unveiled. According to the Public Relations Office of Shiraz University, during the closing ceremony of Research and Technology Week, held on the evening...
Launching of the Second International Conference on Artificial Intelligence and Software Engineering
Launching of the Second International Conference on Artificial Intelligence and Software Engineering
The Second International Conference on Artificial Intelligence and Software Engineering officially commenced on Tuesday, December 25, at Shiraz University. It intends to enhance practical and theoretical knowledge and facilitate information exchange...
Participation of Shiraz University Faculty Member in BRICS Young Scientists Forum
Participation of Shiraz University Faculty Member in BRICS Young Scientists Forum
Dr. Seyyed Hamed Rastgar, a faculty member in the Telecommunications and Electronics Engineering Department at Shiraz University, was the representative of the Islamic Republic of Iran at the BRICS Young Scientists meeting. According to the Public...
Nine Faculty Members of Shiraz University Among Highly Cited Iranian Researchers in Humanities and Social Sciences
Nine Faculty Members of Shiraz University Among Highly Cited Iranian Researchers in Humanities and Social Sciences
According to the public relations office of Shiraz University, citing the Scientometrics Office of the Research and Technology Department of the university, based on a report by the Institute for Scientific and Technological Research of the Islamic...
Signing of Two Cooperation Agreements Between Shiraz University and European Research Institutions
Signing of Two Cooperation Agreements Between Shiraz University and European Research Institutions
Shiraz University has signed cooperation agreements with the University of Zaragoza in Spain and the National Research Council of Italy (CNR IRPI) aimed at enhancing scientific, research, and technological collaboration. According to the Public...
Shiraz University Professor Named National Outstanding Researcher
Shiraz University Professor Named National Outstanding Researcher
Dr. Mehrdad Niakosari, the professor of the Department of Food Science and Technology at Shiraz University, has been recognized as a national outstanding researcher. According to the public relations office of Shiraz University, at the 25th Festival...
Graduation Celebration for 500 International Students at Shiraz University
Graduation Celebration for 500 International Students at Shiraz University
According to the public relations office of Shiraz University, a graduation celebration for 500 international students from across the country was held at Shiraz University. Approximately 500 international students from various academic...