|
Post by sigurdur on Nov 18, 2020 3:12:00 GMT
Any thoughts on "interesting"? I am going to pull up some charts in the morning. Now that growing season has ended, I don't watch as close as during that. Where is the center of the "high" located right now? That is as important as the pressure gradients.
|
|
|
Post by missouriboy on Nov 18, 2020 5:38:39 GMT
Any thoughts on "interesting"? I am going to pull up some charts in the morning. Now that growing season has ended, I don't watch as close as during that. Where is the center of the "high" located right now? That is as important as the pressure gradients. Not sure. I'm assuming that the GBI is measured for a specific, non-changing area ... like over and around Greenland. If high pressure were to drift westwardward, I'm not certain there is a published standard geographic measure (index) that would pick it up. Obviously it's on continuous digital coverages, but that is hard to follow over time with a spreadsheet. ACID?
|
|
|
Post by acidohm on Nov 18, 2020 19:54:57 GMT
I am going to pull up some charts in the morning. Now that growing season has ended, I don't watch as close as during that. Where is the center of the "high" located right now? That is as important as the pressure gradients. Not sure. I'm assuming that the GBI is measured for a specific, non-changing area ... like over and around Greenland. If high pressure were to drift westwardward, I'm not certain there is a published standard geographic measure (index) that would pick it up. Obviously it's on continuous digital coverages, but that is hard to follow over time with a spreadsheet. ACID? Theres no specific Greenland high atm, high pressure is over Urals, bit far from any of us tho....
|
|
|
Post by missouriboy on Nov 18, 2020 20:48:27 GMT
Not sure. I'm assuming that the GBI is measured for a specific, non-changing area ... like over and around Greenland. If high pressure were to drift westwardward, I'm not certain there is a published standard geographic measure (index) that would pick it up. Obviously it's on continuous digital coverages, but that is hard to follow over time with a spreadsheet. ACID? Theres no specific Greenland high atm, high pressure is over Urals, bit far from any of us tho.... Classic negative NAO occurs when pressure over Iceland (usually directly related to Greenland pressure) is higher than pressure at Gibraltar and/or the Azores. Calculated as normalized pressure over Azores minus normalized pressure over Iceland OR Gibraltar minus Iceland. Lower than normal pressure over Iceland will not produce your classic negative NAO unless pressures over Azores or Gibraltar are even lower. What other scenarios produce your classic "Beast from the East"?
|
|
|
Post by sigurdur on Nov 19, 2020 1:45:48 GMT
I am going to pull up some charts in the morning. Now that growing season has ended, I don't watch as close as during that. Where is the center of the "high" located right now? That is as important as the pressure gradients. Not sure. I'm assuming that the GBI is measured for a specific, non-changing area ... like over and around Greenland. If high pressure were to drift westwardward, I'm not certain there is a published standard geographic measure (index) that would pick it up. Obviously it's on continuous digital coverages, but that is hard to follow over time with a spreadsheet. ACID? Greenland high is about where it normally is at this time of year. Within a week, it will collapse. A changing pattern looks like it will come next week.
|
|
|
Post by nautonnier on Nov 29, 2020 16:42:52 GMT
How about an X-100 class flare/CME arriving an hour after the big-one on the San Andreas?
|
|
|
Post by gridley on Nov 29, 2020 19:01:38 GMT
How about an X-100 class flare/CME arriving an hour after the big-one on the San Andreas? It would give new meaning to the term "shake and bake."
|
|
|
Post by nautonnier on Dec 22, 2020 16:49:39 GMT
|
|
|
Post by missouriboy on Dec 24, 2020 16:24:04 GMT
Solar activity over nine millennia: A consistent multi-proxy reconstruction Chi Ju Wu1 , I. G. Usoskin2, 3 , N. Krivova1 , G. A. Kovaltsov4 , M. Baroni5 , E. Bard5 , and S. K. Solanki1, 6 arxiv.org/pdf/1804.01302.pdf
|
|
|
Post by nonentropic on Dec 24, 2020 18:15:06 GMT
MB for Xmas can you stick a temperature record on the money graph fig 14.
Have read it fast and it looks well done Be10 etc. have a long and reliable history but they have found new detail.
It should help us with the solar influence discussion.
|
|
|
Post by missouriboy on Dec 24, 2020 22:13:26 GMT
MB for Xmas can you stick a temperature record on the money graph fig 14. Have read it fast and it looks well done Be10 etc. have a long and reliable history but they have found new detail. It should help us with the solar influence discussion. And before I try that, here are two graphs I picked up from Big Joe's Saturday summary back in 2019. The TSI vs. Water Vapor graph brings to mind a brief discussion on whether the heavier than normal precipitation patterns we are seeing around the globe might have anything to do with a cooling atmosphere. Note the declines in the 1960s-80s cold period. Don't have any world regional precip. data, but would I bet it is higher in certain latitude belts? For last 3 graphs that include Chi, don't think I have the raw data ... so overlay becomes a problem. Will check. Hersbach reference rmets.onlinelibrary.wiley.com/doi/10.1002/qj.3803
|
|
|
Post by nautonnier on Jan 2, 2021 17:29:37 GMT
|
|
|
Post by missouriboy on Jan 11, 2021 6:05:56 GMT
The sun has been spotless for 9 of the last 11 days in January. This month will likely not be at SC24 levels.
|
|
|
Post by nautonnier on Jan 11, 2021 14:28:01 GMT
The sun has been spotless for 9 of the last 11 days in January. This month will likely not be at SC24 levels. That may upset a few solar physicists. In many ways the forecasting of the 'strength' of the next Solar cycle is similar to the forecasting of the next Hurricane season
|
|
|
Post by missouriboy on Jan 11, 2021 15:23:41 GMT
The sun has been spotless for 9 of the last 11 days in January. This month will likely not be at SC24 levels. That may upset a few solar physicists. In many ways the forecasting of the 'strength' of the next Solar cycle is similar to the forecasting of the next Hurricane season
|
|