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biffmalibu
Joined: 30 May 2008 Posts: 556
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Posted: Mon Jun 12, 2023 1:24 pm Post subject: Global Warming, iwindsurf data for the Gorge |
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https://thenib.com/the-future-is-on-thin-ice/
This cartoon is anecdotal. But there are many such stories which, taken together, provide accurate perspective re: Global Warming and the general warming effects in the northern hemisphere.
I was wondering: Does iwindsurf have data that could easily show that 1) duration of wind events has decreased per time period, 2) that the average wind speed has decreased per time period, 3) that barometric pressure differentials have narrowed, 4) other things I cannot currently think about that would indicate diminishing winds overall in the Gorge.
It seems to me that reduced marine layer intrusions might be a byproduct of Global Warming. When I say "Global Warming", I mean, of course, the gradual increase in ocean water temperature and consequent rise in sea level...caused by human industrial activity.
Last edited by biffmalibu on Mon Jun 12, 2023 3:40 pm; edited 1 time in total |
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mac
Joined: 07 Mar 1999 Posts: 17766 Location: Berkeley, California
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Posted: Mon Jun 12, 2023 1:40 pm Post subject: |
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I don’t know about iwindsurf, it would take better data management skills than I have to crunch and smooth data to get a meaningful time series. But scientists have done the work for fog at SFO. Here’s a report from the SF Examiner a few years back:
Quote: | But as the climate warms, mounting scientific evidence suggests that our beloved — and oft bemoaned — coastal fog is on the decline.
“I feel like, this year, there has been less of it,” said Engel Ching, a photographer and self-proclaimed “fogaholic” well known for capturing our famous fog unfurling over the Golden Gate.
Now, a growing body of research is beginning to back up Ching’s hunch. Todd Dawson, a professor of integrative biology at UC Berkeley looked at historical fog records from coastal stations and airports dating back to the 1950s and found a 33% reduction in fog frequency since the early 20th century.
“We’re really perturbing the climate system,” said Dawson. “We’re changing the way air circulates. That means that changes the way our storms behave, the severity of the storms and other things like fog formation and duration.”
Dawson found that, in general, fog seasons are starting later and ending earlier, and the number of foggy hours per day is also dipping dramatically. “We’ve lost basically three hours per day of fog,” he said.
Fog loss isn’t just an identity crisis for San Franciscans, however. It’s also an ecological problem. |
Of course, this year is a dramatic exception. More fog than in years, and I suspect that, and lower peak velocities on the Bay, have much to do with the huge snowpack and water in the central valley. It sucks up some of the excess heat melting and warming that hge thermal mass. |
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biffmalibu
Joined: 30 May 2008 Posts: 556
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Posted: Mon Jun 12, 2023 3:41 pm Post subject: |
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The Bay fog issues are interesting, of course. To clarify, I'm interested primarily in Global Warming's effects on Gorge winds. |
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isobars
Joined: 12 Dec 1999 Posts: 20936
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Posted: Thu Jun 15, 2023 5:27 pm Post subject: |
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...
Last edited by isobars on Thu Jun 15, 2023 5:44 pm; edited 1 time in total |
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isobars
Joined: 12 Dec 1999 Posts: 20936
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Posted: Thu Jun 15, 2023 5:30 pm Post subject: |
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Cause, schmause. We don't need mass quantities of data, statistics gurus, or supercomputers to tell that Gorge winds have gone to hell* for the past 20 years. They're getting worse every year, and Godsey said here that trend will continue over many years to come. In a nutshell, IIRC, he said the NPH has moved too far north to align well with the Gorge, and we may as well get used to winds tumbling over the river's northern shoreline's bluffs instead of ripping cleanly up the riverbed.
* The Corridor's once-great dawn patrol is all but gone.
* Roosevelt's glorious, fabulous, STEADY, frequent, solo, thermal, by-far-best-of-the-day evening fan and swell are all but gone.
* This week aside, most of what we're left with is repeated reruns of six days of boredom punctuated by a day ... often just a few hours ... of drive-by terror.
* The Washington shoreline is usually wind-shadowed from the very common NW wind cant. Many sailors aren't willing to swim 100, let alone 500 yards, across the WA shore wind shadow to a retreating windline they may or may not catch.
* Even when decent wind quality and direction coexist, most people lack the skill and/or equipment to enjoy winds averaging 15 OR 35-40 mph (let alone Maryhill's 50G60 day on Monday), as evidenced by the ratio of people riding lawn chairs to those riding water toys.
Just Damn. |
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isobars
Joined: 12 Dec 1999 Posts: 20936
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Posted: Thu Jun 15, 2023 5:31 pm Post subject: |
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Cause, schmause. We don't need mass quantities of data, statistics gurus, or supercomputers to tell that Gorge winds have gone to hell* for the past 20 years. They're getting worse every year, and Godsey said here that trend will continue over many years to come. In a nutshell, IIRC, he said the NPH has moved too far north to align well with the Gorge, and we may as well get used to winds tumbling over the river's northern shoreline's bluffs instead of ripping cleanly up the riverbed.
* The Corridor's once-great dawn patrol is all but gone.
* Roosevelt's glorious, fabulous, STEADY, frequent, solo, thermal, by-far-best-of-the-day evening fan and swell are all but gone.
* This week aside, most of what we're left with is repeated reruns of six days of boredom punctuated by a day ... often just a few hours ... of drive-by terror.
* The Washington shoreline is usually wind-shadowed from the very common NW wind cant. Many sailors aren't willing to swim 100, let alone 500 yards, across the WA shore wind shadow to a retreating windline they may or may not catch.
* Even when decent wind quality and direction coexist, most people lack the skill and/or equipment to enjoy winds averaging 15 OR 35-40 mph (let alone Maryhill's 50G60 day on Monday), as evidenced by the ratio of people riding lawn chairs to those riding water toys.
Just Damn. |
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isobars
Joined: 12 Dec 1999 Posts: 20936
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Posted: Thu Jun 15, 2023 5:33 pm Post subject: |
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Dammit, iW, FIX THIS PROBLEM. MANY of us have complained here and directly to Weatherflow about it, to no avail. |
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isobars
Joined: 12 Dec 1999 Posts: 20936
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Posted: Thu Jun 15, 2023 5:33 pm Post subject: |
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Dammit, iW, FIX THIS PROBLEM. MANY of us have complained here and directly to Weatherflow about it, to no avail. |
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isobars
Joined: 12 Dec 1999 Posts: 20936
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Posted: Thu Jun 15, 2023 5:34 pm Post subject: |
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Dammit, iW, FIX THIS PROBLEM. MANY of us have complained here and directly to Weatherflow about it, to no avail. |
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isobars
Joined: 12 Dec 1999 Posts: 20936
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Posted: Thu Jun 15, 2023 5:43 pm Post subject: |
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Dammit, iW, FIX THIS PROBLEM. MANY of us have complained here and directly to Weatherflow about it, to no avail. |
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