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توجه: در صورتی که از کاربران قدیمی ایران انجمن هستید و امکان ورود به سایت را ندارید، میتوانید با آیدی altin_admin@ در تلگرام تماس حاصل نمایید.
مباحث عمومی هواشناسی
- شروع کننده موضوع Amir Mohsen
- تاریخ شروع
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Amir Mohsen
متخصص بخش هواشناسی
Amir Mohsen
متخصص بخش هواشناسی
Amir Mohsen
متخصص بخش هواشناسی
ali_kermanshah
کاربر ويژه
Amir Mohsen
متخصص بخش هواشناسی
امیر کوروش جان
شاخصهای بسیار زیادی بر اقلیم ایران تاثیر گذار هست که اثرات این شاخصها در کنار هم دیگه باید مورد بررسی قرار بگیره.
گاهی بعضی شاخصها نباید مثبت همزمان مثبت و یا منفی بشن( یعنی یکی باید منفی بشه و یکی مثبت)
در بعضی ماهها باز وقتی دو تا مثبت باشن و یا دوتا منفی باشن خوب هست و ما در ایران تنها ابزای که در دسترس داریم و می تونیم به این واقعیتها برسیم ، الگوسازی بر اساس مدلهای آماری و توجه ویژه به تغییرات شاخصهاست.
Amir Mohsen
متخصص بخش هواشناسی
بعنوان مثال فاز مثبت QBO در ماه فوریه منجر به پر بارشی در برخی نقاط کشور میشه:
Amir Mohsen
متخصص بخش هواشناسی
یا شاخص TNI در فاز مثبت در ماه ژانویه تبعات پربارشی در ایران به همراه داره:
TNI (Trans-Niño Index) and N3.4 (Niño 3.4 Index)
Regression of global SST anomalies with TNI for 1900-1976 in °C. Values exceeding 0.10°C are hatched and less than -0.10°C are stippled. The contours are ±0.05°C, ±0.10°C, ±0.15°C, etc. (The TNI is defined and discussed below.)
TNI (Trans-Niño Index) and N3.4 (Niño 3.4 Index)
Regression of global SST anomalies with TNI for 1900-1976 in °C. Values exceeding 0.10°C are hatched and less than -0.10°C are stippled. The contours are ±0.05°C, ±0.10°C, ±0.15°C, etc. (The TNI is defined and discussed below.)
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| Fig. 4. Correlations of SST anomalies with TNI for 1900-1976 and 1977-2000. Values exceeding 0.3 are hatched and less than -0.3 are stippled. The contours are ±0.1, ±0.3, ±0.5, etc. |
40 Years Ago, Iran Was Hit by the Deadliest Blizzard in History
Forty years ago this week, the deadliest blizzard on record ripped through the lower Caucasus and into
Iran, where it left 4,000 people dead. The Blizzard of 1972, as this hellish storm has come to be known, wasn’t your run of the mill squall; it wiped entire villages—200 villages, to be exact—off the map.
Coming on the heels of a series of storms in late January, the blizzard of 1972 traveled through western Iran and into Azerbaijan from about February 3 to February 8, dropping up to 26 feet of snow—that’s a two and half story building worth of snowfall—and snapping telephone lines, burying commuter trains, entombing villages, and crushing cars in its wake.
At the height of this blizzard, authorities estimated that a region about the size of Wisconsin, spanning most of western Iran, was entirely buried for more than a week. Those few who survived the -13 degree Fahrenheit temperatures were without water, food, heat and medical aid for days on end at a time when—just in case these poor people didn’t have enough to deal with—a deadly flu virus was also moving through rural Iran.
On February 9, 1972, after nearly a week of constant snowfall, the blizzard broke for a brief, but merciful, 24-hour period, allowing Iranian rescue workers to be transported by helicopter out to what looked essentially like enormous snow drifts—white expanses where villages used to be.
According to Associated Press reports, some rescue workers who’d been dropped on a snow drift burying a village called Sheklab dug for two days straight, burrowing through 8 feet of snow, only to find 18 frozen bodies and no one—not one single person in a population of 100—still alive.
Another blizzard started up again on February 11, forcing rescue workers to abandon their searches. Army helicopters left two tons of bread and dates scattered over the snowdrifts, in hopes that some people could tunnel their way to the surface, but many never did.
Iran, where it left 4,000 people dead. The Blizzard of 1972, as this hellish storm has come to be known, wasn’t your run of the mill squall; it wiped entire villages—200 villages, to be exact—off the map.
Coming on the heels of a series of storms in late January, the blizzard of 1972 traveled through western Iran and into Azerbaijan from about February 3 to February 8, dropping up to 26 feet of snow—that’s a two and half story building worth of snowfall—and snapping telephone lines, burying commuter trains, entombing villages, and crushing cars in its wake.
At the height of this blizzard, authorities estimated that a region about the size of Wisconsin, spanning most of western Iran, was entirely buried for more than a week. Those few who survived the -13 degree Fahrenheit temperatures were without water, food, heat and medical aid for days on end at a time when—just in case these poor people didn’t have enough to deal with—a deadly flu virus was also moving through rural Iran.
On February 9, 1972, after nearly a week of constant snowfall, the blizzard broke for a brief, but merciful, 24-hour period, allowing Iranian rescue workers to be transported by helicopter out to what looked essentially like enormous snow drifts—white expanses where villages used to be.
According to Associated Press reports, some rescue workers who’d been dropped on a snow drift burying a village called Sheklab dug for two days straight, burrowing through 8 feet of snow, only to find 18 frozen bodies and no one—not one single person in a population of 100—still alive.
Another blizzard started up again on February 11, forcing rescue workers to abandon their searches. Army helicopters left two tons of bread and dates scattered over the snowdrifts, in hopes that some people could tunnel their way to the surface, but many never did.
Amir Mohsen
متخصص بخش هواشناسی
اینو ببین آبتین جان:
http://mashhadmeteo.ir/post/185
قبلا خونده بودمش . اطلاعات خوبی داره .
حیف که عکس از ان سال کم هست در اون سال ها دست هرکس دوربین نبود .
حالا به نظرت باید پرونده زمستان امسال رو بست یا امیدی به برف و سرمای شدید در نیمه شمالی وجود داره .
جالب بود
به نظر میاد کم کم توجه بعضی از کاربرای این سایت به صفحه شما داره بیشتر میشه.
Amir Mohsen
متخصص بخش هواشناسی
اعتقاد دارم که در زمستان امسال تا این لحظه دوبار این اتفاق رخ داده.
یک بار در شمال غرب و یک بار در نواحی جنوبی ایران
اگه الان هم سال 1350 خورشیدی بود و ما در زیرساختمون ضعف داشتیم و امکانات فعلی نبود از اون سال تلافات بیشتری رخ میداد
Amir Mohsen
متخصص بخش هواشناسی
آره خدا رو شکر
من هم اینرو در جوابش ارسال کردم:
QUOTE(idecline @ Jan 15 2014, 11:39 AM)
From Santa Cruz, California...
As far as the "Pineapple Express" is concerned...I was wondering who has been getting 'our' rain...Ha ha
We haven't had a 'true' Pineapple Connection set up in California for a long, long time....we had a record breaking year for lack of rainfall in 2013 and our ridge in the NE pacific will not budge...I hope we get some sub-tropical enhanced rain later this year to help ease the drought...
Enjoy your posts!
Hi
I do appreciate for your kind reply and I am so happy ,my posts is on your interest.
Unfortunately,many Iranian people do not share the weather phenomena at Iran with the people all around the world and by this lack of information you and the others have no information and Ideas about the Climate of Iran.
As you know the Iran's extent is almost about one-Sixth of the united states but in both countries we have unbelievable similarities weather pattern which connect both soils together surprisingly.
Refer to pineapple express, I wish ,it come back to California coast and brought to you Rainy and stormy weather and hopefully ease the drought.
Cheers.
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Amir Mohsen
متخصص بخش هواشناسی
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