Amir Mohsen
متخصص بخش هواشناسی
نقشه آنومالی دما سطح زمین نیروی دریایی هم آپدیت شد:گل:
9 اکتبر 2013
9 اکتبر 2013
-
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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Amir Mohsen
متخصص بخش هواشناسی
به به - آنومالی فشار سطح دریا برآورد سامانه نیروی دریایی - 9 اکتبر:
Amir Mohsen
متخصص بخش هواشناسی
هواشناسی کانادا پیش بینی آنومالی دمایی زیبایی و شیرینی رو ارائه داده!!!!!
10 اکتبر 2013 :
10 اکتبر 2013 :
GEM GLOBAL DETERMINISTIC PREDICTION SYSTEM (GDPS
Amir Mohsen
متخصص بخش هواشناسی
عجب طوفان سهمگینی در انتظار کشور ژاپن هست!!!!!!!!!!!!!!!!
Amir Mohsen
متخصص بخش هواشناسی
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Amir Mohsen
متخصص بخش هواشناسی
غیر جنوب شرق و استان هرمزگان وبقیه کاملا پائیزیههواشناسی کانادا پیش بینی آنومالی دمایی زیبایی و شیرینی رو ارائه داده!!!!!
10 اکتبر 2013 :
GEM GLOBAL DETERMINISTIC PREDICTION SYSTEM (GDPS
ali.doosti
کاربر ويژه
سلام
امیر جان بابت اطلاعات بسیار مفیدی که در اختیارمون می ذاری بی نهایت سپاسگزارم...واقعا که مهربونی برازندتونه...
بنده هم با اجازه حرف شما رو تایید می کنم! این جا هم nao و ao ی مثبت باعث بارش خوب میشه
امیر جان بابت اطلاعات بسیار مفیدی که در اختیارمون می ذاری بی نهایت سپاسگزارم...واقعا که مهربونی برازندتونه...
بنده هم با اجازه حرف شما رو تایید می کنم! این جا هم nao و ao ی مثبت باعث بارش خوب میشه
Amir Mohsen
متخصص بخش هواشناسی
آنومالی ضخامت لایه 500-1000 میلی بار در 7 روز گذشته(وضعیت سطح زمین)
Amir Mohsen
متخصص بخش هواشناسی
سلام
امیر جان بابت اطلاعات بسیار مفیدی که در اختیارمون می ذاری بی نهایت سپاسگزارم...واقعا که مهربونی برازندتونه...
بنده هم با اجازه حرف شما رو تایید می کنم! این جا هم nao و ao ی مثبت باعث بارش خوب میشه
سلام علی عزیز و شب بخیر
خواهش میکنم ، انجام وظیفه است.
از اینکه در مورد شاخص های مذکور اظهار نظر کردید خیلی ممنونم. ولی خوب بسته به شرایط و تاثیر پذیری از نوسانات دیگه همیشه شاخص ها مذکور یک روند قطعی ندارند و تغییر پذیر هستند.
Amir Mohsen
متخصص بخش هواشناسی
وضعیت یخ و برف نیمکره شمالی در آپدیت 30 سپتامبر خیلی بهتر شده:
Data updated 30 September 2013
Data updated 30 September 2013
Amir Mohsen
متخصص بخش هواشناسی
آخرین وضعیت انسو:
Amir Mohsen
متخصص بخش هواشناسی
تجربه اولین دماهای زیر صفر در بلندیهای شمال غرب کشور:
دوشنبه هفته آینده
دوشنبه هفته آینده
Amir Mohsen
متخصص بخش هواشناسی
بارش تجمعی نیمه شمالی کشور تا 144 ساعت آینده:
ali.doosti
کاربر ويژه
شبتون بخیر
والا از لحاظ شاخص های دیگه باید خدمتتون عرض کنم پارسال که النینو خفی بود در IOD مثبت، nao و ao مثبت و mjo 1-2 پربارش ترین دوره ها بود ...بازم ممنونم...
Amir Mohsen
متخصص بخش هواشناسی
Description:
Date Taken: 8/7/2013
Views: 29
City: johnstown
State: pennsylvania
Zipcode: 15909
Country:
Amir Mohsen
متخصص بخش هواشناسی
‘Atmospheric River’ Smashes Records in Pacific Northwest
By Andrew Freedman
Follow @afreedma
A barrage of unusually intense early-autumn storm systems swept across the Pacific Northwest this weekend, bringing hurricane-force winds and dumping enough rain to smash all-time monthly rainfall records from Seattle to Portland.
In Seattle and Olympia, Wash., Sept. 28 was the wettest September day on record. In Seattle, 1.71 inches of rain fell, which was more rain than typically falls during the entire month.
Water vapor satellite image showing the "atmospheric river" extending from near Hawaii in the lower left to the Pacific Northwest in the upper right. Arrows indicate the direction of moisture transport.
Credit: U. Wisc. via Facebook/Stu Ostro.
The rainfall was the product of a long, snake-like plume of moisture that stretched from near Hawaii to the gulf of Alaska, and it aimed squarely at the Pacific Northwest. These moisture plumes are sometimes called “atmospheric rivers,” which are responsible for some of the most damaging flooding events along the U.S. West Coast, particularly in California.
Some of the moisture originally came from Typhoon Pabok, which was in the western Pacific several days ago, according to the National Weather Service.
The highest rainfall totals were recorded in mountainous areas, with 5-10 inches or more of rainfall commonplace in the higher elevations of Oregon and Washington. Lees Camp, Ore., for example, recorded 11.10 inches of rain from Sept. 27-30, and Tillamook, along the north Oregon coast, received 6.84 inches.
A weather station on Mount St. Helens recorded 15.30 inches of rain during the same period.
The Portland metro area saw between 3-4 inches of rainfall, which is extremely rare for this time of year. Oregon wine country was also affected, with more than 3 inches of rain falling in three days.
While the Pacific Northwest sees its fair share of storms, it is typically quite dry during September, and the storm was sufficient to break numerous records.
In Portland, September 2013 is now the wettest such month on record, with 6.21 inches and counting at the downtown weather station, where records have been maintained since 1872. Typically, Portland receives just 1.47 inches of rain during the month.
Astoria, Ore., had received 10.51 inches of rain as of Monday morning, nearly 2 inches more than its previous mark set in September, 1906. Its normal monthly rainfall is just 2.14 inches.
The blitz of rain and strong, damaging winds also pushed September into record wettest territory in Eugene, Hillsboro, Salem, and Vancouver, Wash.
Winds reached speeds of greater than 80 mph in higher elevations of Oregon and Washington, knocking down trees and power lines. Winds in Seattle and Portland, which are at lower elevations, were much lower. (Cliff Mass has a comprehensive rundown on the strong wind reports over at his weather blog.)
According to the National Oceanic and Atmospheric Administration (NOAA), up to half of the yearly precipitation along the West Coast comes in just a few atmospheric river events. A NOAA website on atmospheric rivers contains this fascinating statistic that illustrates just how much moisture can be transported by winds in the mid-to-upper atmosphere: “A strong atmospheric river transports an amount of water vapor roughly equivalent to 7.5-15 times the average flow of liquid water at the mouth of the Mississippi River.”
A study published earlier this year found that climate change may contribute to the growth of atmospheric rivers, increasing the threat of associated flooding.
- Published: September 30th, 2013, Last Updated: September 30th, 2013
By Andrew Freedman Follow @afreedma
A barrage of unusually intense early-autumn storm systems swept across the Pacific Northwest this weekend, bringing hurricane-force winds and dumping enough rain to smash all-time monthly rainfall records from Seattle to Portland.
In Seattle and Olympia, Wash., Sept. 28 was the wettest September day on record. In Seattle, 1.71 inches of rain fell, which was more rain than typically falls during the entire month.
Credit: U. Wisc. via Facebook/Stu Ostro.
The rainfall was the product of a long, snake-like plume of moisture that stretched from near Hawaii to the gulf of Alaska, and it aimed squarely at the Pacific Northwest. These moisture plumes are sometimes called “atmospheric rivers,” which are responsible for some of the most damaging flooding events along the U.S. West Coast, particularly in California.
Some of the moisture originally came from Typhoon Pabok, which was in the western Pacific several days ago, according to the National Weather Service.
The highest rainfall totals were recorded in mountainous areas, with 5-10 inches or more of rainfall commonplace in the higher elevations of Oregon and Washington. Lees Camp, Ore., for example, recorded 11.10 inches of rain from Sept. 27-30, and Tillamook, along the north Oregon coast, received 6.84 inches.
A weather station on Mount St. Helens recorded 15.30 inches of rain during the same period.
The Portland metro area saw between 3-4 inches of rainfall, which is extremely rare for this time of year. Oregon wine country was also affected, with more than 3 inches of rain falling in three days.
While the Pacific Northwest sees its fair share of storms, it is typically quite dry during September, and the storm was sufficient to break numerous records.
In Portland, September 2013 is now the wettest such month on record, with 6.21 inches and counting at the downtown weather station, where records have been maintained since 1872. Typically, Portland receives just 1.47 inches of rain during the month.
Astoria, Ore., had received 10.51 inches of rain as of Monday morning, nearly 2 inches more than its previous mark set in September, 1906. Its normal monthly rainfall is just 2.14 inches.
The blitz of rain and strong, damaging winds also pushed September into record wettest territory in Eugene, Hillsboro, Salem, and Vancouver, Wash.
Winds reached speeds of greater than 80 mph in higher elevations of Oregon and Washington, knocking down trees and power lines. Winds in Seattle and Portland, which are at lower elevations, were much lower. (Cliff Mass has a comprehensive rundown on the strong wind reports over at his weather blog.)
According to the National Oceanic and Atmospheric Administration (NOAA), up to half of the yearly precipitation along the West Coast comes in just a few atmospheric river events. A NOAA website on atmospheric rivers contains this fascinating statistic that illustrates just how much moisture can be transported by winds in the mid-to-upper atmosphere: “A strong atmospheric river transports an amount of water vapor roughly equivalent to 7.5-15 times the average flow of liquid water at the mouth of the Mississippi River.”
A study published earlier this year found that climate change may contribute to the growth of atmospheric rivers, increasing the threat of associated flooding.
Amir Mohsen
متخصص بخش هواشناسی
Government Shutdown Affects Weather, Climate Programs
By Andrew Freedman
Follow @afreedma
With the federal government shut down for the first time in 17 years, many of the nation’s weather forecasters remain at work, but longer-term climate research is taking a hit. According to Commerce Department documents, 6,601 of the 12,001 employees of the National Oceanic and Atmospheric Administration (NOAA) -- or 55 percent of the agency's workforce -- have been sent home without pay. That leaves 5,400 “excepted” from the shutdown, mainly because they are needed for the protection of life and property.
NOAA and NASA satellites will continue operating during the government shutdown, but the public may have trouble accessing images as websites are not maintained.
Credit: NASA.
In particular, the National Weather Service will continue operating its network of 122 local forecast offices to provide weather forecasts, watches, and warnings, and NOAA will also continue to operate its weather and climate computer models, as well as satellite data feeds to ensure that forecasters have uninterrupted access to weather information.
But while the weather service forecast offices are open, employees are not allowed to engage in their typical full range of activities, according to a NWS meteorologist.
“We are restricted to 'mission critical' duties. We aren't allowed to engage the public in outreach activities (such as spotter talks or school talks), and we're supposed to only include forecast-critical information on Facebook and Twitter accounts," the meteorologist told Climate Central, speaking on the condition of anonymity because they were not authorized to talk to the media about the shutdown. "Only emergency equipment maintenance is allowed, which means that routine maintenance is not. This will hamstring us in the future, either when the shutdown is lifted and the rush of delayed work hits or when equipment breaks because it is not being maintained properly,” the meteorologist said.
According to a spokesperson for the Commerce Department, which houses NOAA, the missions of “weather, water, and climate observing, prediction, forecast, warning, and support” will all continue despite a lapse in fiscal year 2014 appropriations.
However, much of NOAA’s research activities have stopped or been slowed. For example, Harold Brooks, a top tornado researcher who works at the National Severe Storms Laboratory in Norman, Okla., reported his furlough notice on Facebook on Tuesday. Much of the staff at NOAA's Earth Systems Research Lab and the Geophysical Fluid Dynamics Laboratory, except for positions related to maintaining computing resources, have also been furloughed. Those two labs are heavily involved in NOAA's climate research programs.
"Because your services are no longer needed for orderly suspension of operations and you are not engaged in one of the excepted functions, you are being placed in a furlough status effective October 1, 2013,” said Brooks' post on Facebook. “Always a good letter to get,” he said.
Two noteworthy exceptions in the research arena are computer models that are used for weather and climate forecasting and hurricane research flights. The Atlantic hurricane season ends on November 30, and although the season has been unusually quiet this year, NOAA is maintaining its readiness to fly into storms to conduct scientific research.
NOAA’s fleet of weather satellites, which it operates with NASA, will continue to gather data.
The longer the shutdown lasts, though, the greater the risks that it will have lasting impacts on America’s weather and climate infrastructure. For example, the country is already looking at a likely gap in critical weather satellite coverage starting in about 2016, which experts say will result in less accurate weather forecasts.
The message on the main NOAA website on October 1, the first day of the shutdown.
Any further delays in developing new satellites will increase the likelihood and length of such a gap. A short shutdown will allow the contractors that are building the new satellites, including new polar-orbiting and geostationary weather satellites, to keep working using funding left over from fiscal year 2013 appropriations. But, according to NOAA, if the furloughs last beyond 1 to 2 weeks, the satellite production schedule could slip.
Other government agencies that play a role in weather and climate research are not faring as well as the NWS under the shutdown. NASA, which recieves the largest share of climate science research funding under the U.S. Global Change Science Program, did not have a functioning main website as of Tuesday morning, and just 3 percent of its workforce (including the astronauts currently in space on the International Space Station) are still on the job. NASA's Landsat satellite, which scientists use for monitoring changes in Earth systems and plant health, will continue operating but its images won't be processed into a format useful for research and monitoring, according to a report in The Atlantic.
Other federal agencies that have a significant role in climate and weather research have also sharply curtailed their operations. The National Science Foundation is not offering any new research grants until the shutdown ends, and the Department of Energy will have just 1,113 employees remaining on the job, compared to its full contingent of 13,814 employees. Most of the non-furloughed Energy employees are responsible for maintaining the U.S. nuclear weapons stockpile and conducting other critical life and property protection work.
The Energy Department is a key funder of climate research programs, and provides advanced computing resources at its national labs. The National Renewable Energy Laboratory is closed due to the shutdown. Programs related to energy efficiency and researching advanced energy technologies, along with the Energy Information Administration, which conducts research on energy trends, have also been shuttered.
Other agencies that conduct climate research include the Department of Interior, where about 81 percent of agency employees have been furloughed. The U.S. Geological Survey is housed within the Interior Department and operates the national network of river flood gauges that help warn of dangerous flash flood events.
- Published: October 1st, 2013 , Last Updated: October 1st, 2013
By Andrew Freedman Follow @afreedma
With the federal government shut down for the first time in 17 years, many of the nation’s weather forecasters remain at work, but longer-term climate research is taking a hit. According to Commerce Department documents, 6,601 of the 12,001 employees of the National Oceanic and Atmospheric Administration (NOAA) -- or 55 percent of the agency's workforce -- have been sent home without pay. That leaves 5,400 “excepted” from the shutdown, mainly because they are needed for the protection of life and property.
Credit: NASA.
In particular, the National Weather Service will continue operating its network of 122 local forecast offices to provide weather forecasts, watches, and warnings, and NOAA will also continue to operate its weather and climate computer models, as well as satellite data feeds to ensure that forecasters have uninterrupted access to weather information.
But while the weather service forecast offices are open, employees are not allowed to engage in their typical full range of activities, according to a NWS meteorologist.
“We are restricted to 'mission critical' duties. We aren't allowed to engage the public in outreach activities (such as spotter talks or school talks), and we're supposed to only include forecast-critical information on Facebook and Twitter accounts," the meteorologist told Climate Central, speaking on the condition of anonymity because they were not authorized to talk to the media about the shutdown. "Only emergency equipment maintenance is allowed, which means that routine maintenance is not. This will hamstring us in the future, either when the shutdown is lifted and the rush of delayed work hits or when equipment breaks because it is not being maintained properly,” the meteorologist said.
According to a spokesperson for the Commerce Department, which houses NOAA, the missions of “weather, water, and climate observing, prediction, forecast, warning, and support” will all continue despite a lapse in fiscal year 2014 appropriations.
However, much of NOAA’s research activities have stopped or been slowed. For example, Harold Brooks, a top tornado researcher who works at the National Severe Storms Laboratory in Norman, Okla., reported his furlough notice on Facebook on Tuesday. Much of the staff at NOAA's Earth Systems Research Lab and the Geophysical Fluid Dynamics Laboratory, except for positions related to maintaining computing resources, have also been furloughed. Those two labs are heavily involved in NOAA's climate research programs.
"Because your services are no longer needed for orderly suspension of operations and you are not engaged in one of the excepted functions, you are being placed in a furlough status effective October 1, 2013,” said Brooks' post on Facebook. “Always a good letter to get,” he said.
Two noteworthy exceptions in the research arena are computer models that are used for weather and climate forecasting and hurricane research flights. The Atlantic hurricane season ends on November 30, and although the season has been unusually quiet this year, NOAA is maintaining its readiness to fly into storms to conduct scientific research.
NOAA’s fleet of weather satellites, which it operates with NASA, will continue to gather data.
The longer the shutdown lasts, though, the greater the risks that it will have lasting impacts on America’s weather and climate infrastructure. For example, the country is already looking at a likely gap in critical weather satellite coverage starting in about 2016, which experts say will result in less accurate weather forecasts.
Any further delays in developing new satellites will increase the likelihood and length of such a gap. A short shutdown will allow the contractors that are building the new satellites, including new polar-orbiting and geostationary weather satellites, to keep working using funding left over from fiscal year 2013 appropriations. But, according to NOAA, if the furloughs last beyond 1 to 2 weeks, the satellite production schedule could slip.
Other government agencies that play a role in weather and climate research are not faring as well as the NWS under the shutdown. NASA, which recieves the largest share of climate science research funding under the U.S. Global Change Science Program, did not have a functioning main website as of Tuesday morning, and just 3 percent of its workforce (including the astronauts currently in space on the International Space Station) are still on the job. NASA's Landsat satellite, which scientists use for monitoring changes in Earth systems and plant health, will continue operating but its images won't be processed into a format useful for research and monitoring, according to a report in The Atlantic.
Other federal agencies that have a significant role in climate and weather research have also sharply curtailed their operations. The National Science Foundation is not offering any new research grants until the shutdown ends, and the Department of Energy will have just 1,113 employees remaining on the job, compared to its full contingent of 13,814 employees. Most of the non-furloughed Energy employees are responsible for maintaining the U.S. nuclear weapons stockpile and conducting other critical life and property protection work.
The Energy Department is a key funder of climate research programs, and provides advanced computing resources at its national labs. The National Renewable Energy Laboratory is closed due to the shutdown. Programs related to energy efficiency and researching advanced energy technologies, along with the Energy Information Administration, which conducts research on energy trends, have also been shuttered.
Other agencies that conduct climate research include the Department of Interior, where about 81 percent of agency employees have been furloughed. The U.S. Geological Survey is housed within the Interior Department and operates the national network of river flood gauges that help warn of dangerous flash flood events.
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