حامد از اصفهان
کاربر ويژه
درود ، موندم بگم اصفهان برف میاد یا نمیاد ، دوباره امیدها برای بارش برف 5 شنبه اصفهان زنده شده ، امیدوار به رخ دادن هستم
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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
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حامد از اصفهان
کاربر ويژه
درود ، ما که مردیم از بی بارشی ، باز بارون بهتر از هوای صافه .........
Amir Mohsen
متخصص بخش هواشناسی
hamed*zagros
کاربر ويژه
Amir Mohsen
متخصص بخش هواشناسی
ehsa az esfahan
کاربر ويژه
Amir Mohsen
متخصص بخش هواشناسی
آخرین اطلاعات رادیو سند ایستگاههای فعال سطح کشور:
تهران:
مشهد:
اصفهان:
تبریز:
تهران:
مشهد:
اصفهان:
تبریز:
Amir Mohsen
متخصص بخش هواشناسی
َAIR MASS
ehsa az esfahan
کاربر ويژه
آخرین اطلاعات رادیو سند ایستگاههای فعال سطح کشور:
تهران:
مشهد:
اصفهان:
تبریز:
امیرخان چطوری از این رادیو سند متوجه فراهم بودن شرایط بارش بشیم؟
اگه میشه آدرس سایتش رو بدید ممنون
حامد از اصفهان
کاربر ويژه
والا من الان با گوشیم اومدم ، ولی نقشه ها را که بررسی می کردم وسعت فعالیت سیستم در مرکز بیشتر شده موقیعیت جنب حاره ای کمی عوض شده و بهتر از قبل رطوبت خلیج فارس را به داخل پمپاژ میکنه دیگه فقط باید منتظر موند و دید چی میشه
ehsa az esfahan
کاربر ويژه
امیدوارم حداقل باریدن برف رو ببینیم
Amir Mohsen
متخصص بخش هواشناسی
درود احسان عزیز
این آدرس سایتی هست که می خواستید :
http://weather.uwyo.edu/upperair/sounding.html
و برای پی بردن به اینکه آیا بارش بوقوع خواهد پیوست یا نه چند تا پارامتر مختلف این نقشه هست که باید بهش توجه بشه
از جمله آبهای قابل بارش، شاخص K- index ، lifted Index ، Showlter Index و ... هستند که باید مد نظر گرفته بشه و اساتید عزیز دیگه هم می تونند شما رو کمک کنند در این خصوص
جالبه دقیقن ابرها از منتهی الیه مرزهای شمالغرب به داخل نفوذ نمیکنند انگار یک خط کش گذاشته باشن نکته جالب دیگر این تصاویر بارز بودن الگوی امگای معکوس در تصویر ماهواره ای اروپاست
در اپدیت جدید ودر فورکست 4 سانت برف برای مهراباد پیشبینی شده . بعد از خروج سیستم فریزینگ لول 650 متر پیشبینی شده
http://www.weather-forecast.com/locations/Tehran/forecasts/latest
http://www.weather-forecast.com/locations/Tehran/forecasts/latest
Amir Mohsen
متخصص بخش هواشناسی
علاوه بر نموداری که در بالا گذاشتم یک سری اطلاعات بصورت لیست هم تو همون سایت موجود هست ولی تو حالت نمودارش از لحاظ شماتیک هرچی اون گرافهای نمودار به همدیگه نزدیکتر باشند شرایط برای وقوع بارش و ناپایدرای مهیا تر هست:
اطلاعات لیست و عددی مورد نیاز برای پیش بینی بارش:
تبریز:
Amir Mohsen
متخصص بخش هواشناسی
Amir Mohsen
متخصص بخش هواشناسی
[h=2]Brutal Cold Waves Could be Heading for the U.S.
[h=6]By Alex Sosnowski, Expert Senior Meteorologist [h=5]January 08, 2013; 9:59 AM
Chief Meteorologist Elliot Abrams and Weather Expert Evan Myers discuss the upcoming weather over the next couple of weeks.
The weather pattern so far this season and last year at this time may seem like a "Lion in Winter," but there are indications that the weather may be ready to roar beginning during the second half of January. (Photos.com image and thumbnail)
Beginning near or just past the middle of January, signs are pointing toward waves of frigid air moving southward across North America from the North Pole.
Much of the nation experienced higher-than-average temperatures and lower heating bills so far during the cold weather season, with the exception of some bouts the past couple of weeks.
However, there are signs of a potential change on the way beginning during the second half of January.
A phenomenon known as sudden stratospheric warming has occurred in the arctic region during the past few days. The stratosphere is located between 6 miles and 30 miles above the ground. Often when this occurs, it forces cold air to build in the lowest layer of the atmosphere then to drive southward.
The problem is the exact timing and location of the emergence of this cold air is uncertain. Typically, the movement of cold air begins 10 to 14 days later.
During the next week or so, a flow of milder Pacific air will invade much of the nation. Because of the time of year, some locations (the northern part of the Great Basin and northern New England) may hold on to the cold they have now due to long nights, light winds and weak sunshine. However, most locations will experience an upswing in temperature for at least a several-day period.
According to AccuWeather.com's Long Range Team, including Mark Paquette, "Overlaying this with other tools, we expect to see cold air spreading out from central Canada later next week into week three of January."
It is possible the cold push will arrive in one big blast. However, it is more likely the cold will advance along in waves of progressively colder air with each wave driving farther south and east.
According to Long Range Weather Expert Paul Pastelok, "The early indications are that the initial thrust of the brutal cold will be directed over the Northwest, northern Rockies or northern Plains first, with subsequent waves reaching farther east."
Expert Senior Meteorologist Brett Anderson stated, "Initially, the cold may seem to be run-of-the-mill or even delayed, but once the cold air engine starts, it may run for quite a while with progressively colder and colder waves of air."
According to Expert Senior Meteorologist Jack Boston, "As the waves of cold air spread to the south and east, some energy may be released in the form of a series of storms riding the cold air."
The storms may initially track from the Southwest to the Upper Midwest, then the western Gulf to the Great Lakes, the eastern Gulf to the Appalachians and perhaps finally northward along the Atlantic Seaboard.
Expert Senior Meteorologist Joe Lundberg added, "While a zone of high pressure off the southern Atlantic coast will offer some resistance to the cold initially in the East, most of the time in situations like this, cold air finishes the job and reaches the Atlantic Seaboard."
AccuWeather.com was expecting a stormy pattern to set up beginning the second half of January in the Eastern states and much lower temperatures this winter, when compared to last winter from the Mississippi Valley to the East in its Winter 2012-13 Forecast.
So while the atmosphere may seem to be settling into a pattern like last winter for some people, meteorologists at AccuWeather.com will be watching the evolution of the winter beginning in mid-January with great interest.
Folks may want to check their supply of fuel for the second half of the winter sooner rather than later, in the event the waves of arctic air develop to their full potential. Folks in the Appalachians and parts of the East may not want to sell their snow blower and ditch their snow shovels just yet.
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