Very Brief Warm Spell

Photo2I mentioned what appeared to be a Circumzenithal Arc  in the 10pm show tonight.  It’s somewhat more rare than a halo around the sun.  Nice colors overhead today though.  Click on that link to see much more detailed info about what causes an arc such as this.
A quick jump into summer today.  I noticed there was even a very brief east wind at the west end of the Gorge this morning as the onshore flow briefly stopped.  That’s what helped us go from 67 at PDX yesterday to 83 today.  Pretty good to get a 16 degree jump in one day.  Now we level off tomorrow as onshore flow kicks in late in the day.  Weakening front offshore moves inland Thursday morning.  Latest (00z) runs show little or no moisture making it into the Western Valleys with this system.  Considering the past 10 days it’s probably safest to have a few sprinkles in the forecast, but I took them out (living dangerously apparently).  Big trough gets closer and closer and then moves into the Northwest Saturday and Sunday.  Luckily I work those days so apparently I won’t be missing any nice summer weather eh?
I see a change, a very familiar change, in the 00z long range maps tonight.  Ridging is going to stay to the east next week, keeping a new trough quite close to the close.  So I reduced the high temps to below 80 degrees next Monday and Tuesday.  Hmm…Cloudy June weather is going to continue…Mark

18 Responses to Very Brief Warm Spell

  1. Camas Mom says:

    I’m just glad to see that we aren’t supposed to get rain!

  2. Gregg-Troutdale says:

    67.2 here now, and 56.6 at my station in Hillsboro.

  3. AtmosphericWrath -Far S.E. Portland- says:

    70.5 here. I absolutely love it when we get a strong onshore surge as it always leads to a very comfortable night for sleeping.
    I just read the evening AFD from the NWS PDX office.
    .LONG TERM…NO CHANGES. PREVIOUS DISCUSSION FOLLOWS… THE BEGINNING OF THE EXTENDED PERIOD BODES TO BE THE HIGHLIGHT OF THE EXTENDED FORECAST STARTING OFF WITH A SYSTEM CLOSING IN ON THE PAC NW SATURDAY EVENING AND MOVING ASHORE ON SUNDAY BRINGING WITH IT A SLIGHT CHANCE OF TSTMS. HAVE INCREASED POPS ACCORDINGLY ON SAT EVENING AND SUN. A WELL MODELED DEEP UPPER LEVEL TROUGH DIGS SOUTH INTO CALIFORNIA BRINGING COOL MID TO UPPER LEVEL TEMPS AND WARMER W TO SWLY FLOW LOW LEVEL FLOW. 1000-700 MU CAPE VALUES NEAR 700 J/KG AND -28 C 500 MB TEMPS FAVOR THE TSTM WORDING PARTICULARLY WITH THE FRONTOGENETIC FORCING ASSOCIATED WITH THE WEAK APPROACHING SYSTEM.
    Any thoughts?
    Rob

  4. Gregg-Troutdale says:

    My Station in Hillsboro is already down to 61.4, still 74.2 here.

  5. AtmosphericWrath -Far S.E. Portland- says:

    Significant onshore surge underway. Onshore gradients all increasing. 77 here where as Aurora is 66 with increasing SW winds. 63 at Salem. Even seeing some status/low clouds pushing through the gaps in the Coast Range. Feels wonderful outside.
    Rob

  6. Tyler in Vancouver says:

    I do have a picture of the circumzenithal arc from last night, it was one of the ones Mark showed on the news, but I can’t post it here. The other photographer had a much better picture of what was seen.
    I do also have a picture of iridescence from years ago, but again I can’t post here.
    Tyler

  7. Mark Nelsen says:

    Good marine push underway right now. Gradients from the Coast to the Valley are pretty large.

  8. Gregg-Troutdale says:

    83.1 right now very nice day again today, West winds about 8 mph. Looks like early spring weather starts up again tomorrow.

  9. Andrew---Ellensburg, Wa and Portrland, Or says:

    wow 94 degrees in ellensburg now, 11 degrees above what the NWS forcasted.

  10. gene says:

    About an hour ago (230pm) instead of an arc or halo there was just one brightly colored (mostly red but other rainbow colors too) cloud and it lasted only a few minutes. Is this common or have I just never noticed before? I tried a couple photos but it’ll be next week before the film gets used enough to develop.. thanx, gene

  11. Jordan-Kelso says:

    The rainbow wasn’t large, it like a peice of a rainbow within the clouds. A rectangular peice.

  12. Andrew---Ellensburg, Wa and Portrland, Or says:

    90 in ellensburg now currently

  13. Andrew---Ellensburg, Wa and Portrland, Or says:

    LONG: Very interesting article here for anyone following the global temperature trends. This article suggests that we must actually prepare for global cooling, not warming…
    Read the sunspots
    The mud at the bottom of B.C. fjords reveals that solar output drives climate change – and that we should prepare now for dangerous global cooling
    R. TIMOTHY PATTERSON, Financial Post
    Published: Wednesday, June 20, 2007
    Politicians and environmentalists these days convey the impression that climate-change research is an exceptionally dull field with little left to discover. We are assured by everyone from David Suzuki to Al Gore to Prime Minister Stephen Harper that “the science is settled.” At the recent G8 summit, German Chancellor Angela Merkel even attempted to convince world leaders to play God by restricting carbon-dioxide emissions to a level that would magically limit the rise in world temperatures to 2C.
    The fact that science is many years away from properly understanding global climate doesn’t seem to bother our leaders at all. Inviting testimony only from those who don’t question political orthodoxy on the issue, parliamentarians are charging ahead with the impossible and expensive goal of “stopping global climate change.” Liberal MP Ralph Goodale’s June 11 House of Commons assertion that Parliament should have “a real good discussion about the potential for carbon capture and sequestration in dealing with carbon dioxide, which has tremendous potential for improving the climate, not only here in Canada but around the world,” would be humorous were he, and even the current government, not deadly serious about devoting vast resources to this hopeless crusade.
    Climate stability has never been a feature of planet Earth. The only constant about climate is change; it changes continually and, at times, quite rapidly. Many times in the past, temperatures were far higher than today, and occasionally, temperatures were colder. As recently as 6,000 years ago, it was about 3C warmer than now. Ten thousand years ago, while the world was coming out of the thou-sand-year-long “Younger Dryas” cold episode, temperatures rose as much as 6C in a decade — 100 times faster than the past century’s 0.6C warming that has so upset environmentalists.
    Climate-change research is now literally exploding with new findings. Since the 1997 Kyoto Protocol, the field has had more research than in all previous years combined and the discoveries are completely shattering the myths. For example, I and the first-class scientists I work with are consistently finding excellent correlations between the regular fluctuations in the brightness of the sun and earthly climate. This is not surprising. The sun and the stars are the ultimate source of all energy on the planet.
    My interest in the current climate-change debate was triggered in 1998, when I was funded by a Natural Sciences and Engineering Research Council strategic project grant to determine if there were regular cycles in West Coast fish productivity. As a result of wide swings in the populations of anchovies, herring and other commercially important West Coast fish stock, fisheries managers were having a very difficult time establishing appropriate fishing quotas. One season there would be abundant stock and broad harvesting would be acceptable; the very next year the fisheries would collapse. No one really knew why or how to predict the future health of this crucially important resource.
    Although climate was suspected to play a significant role in marine productivity, only since the beginning of the 20th century have accurate fishing and temperature records been kept in this region of the northeast Pacific. We needed indicators of fish productivity over thousands of years to see whether there were recurring cycles in populations and what phenomena may be driving the changes.
    My research team began to collect and analyze core samples from the bottom of deep Western Canadian fjords. The regions in which we chose to conduct our research, Effingham Inlet on the West Coast of Vancouver Island, and in 2001, sounds in the Belize-Seymour Inlet complex on the mainland coast of British Columbia, were perfect for this sort of work. The topography of these fjords is such that they contain deep basins that are subject to little water transfer from the open ocean and so water near the bottom is relatively stagnant and very low in oxygen content. As a consequence, the floors of these basins are mostly lifeless and sediment layers build up year after year, undisturbed over millennia.
    Using various coring technologies, we have been able to collect more than 5,000 years’ worth of mud in these basins, with the oldest layers coming from a depth of about 11 metres below the fjord floor. Clearly visible in our mud cores are annual changes that record the different seasons: corresponding to the cool, rainy winter seasons, we see dark layers composed mostly of dirt washed into the fjord from the land; in the warm summer months we see abundant fossilized fish scales and diatoms (the most common form of phytoplankton, or single-celled ocean plants) that have fallen to the fjord floor from nutrient-rich surface waters. In years when warm summers dominated climate in the region, we clearly see far thicker layers of diatoms and fish scales than we do in cooler years. Ours is one of the highest-quality climate records available anywhere today and in it we see obvious confirmation that natural climate change can be dramatic. For example, in the middle of a 62-year slice of the record at about 4,400 years ago, there was a shift in climate in only a couple of seasons from warm, dry and sunny conditions to one that was mostly cold and rainy for several decades.
    Using computers to conduct what is referred to as a “time series analysis” on the colouration and thickness of the annual layers, we have discovered repeated cycles in marine productivity in this, a region larger than Europe. Specifically, we find a very strong and consistent 11-year cycle throughout the whole record in the sediments and diatom remains. This correlates closely to the well-known 11-year “Schwabe” sunspot cycle, during which the output of the sun varies by about 0.1%. Sunspots, violent storms on the surface of the sun, have the effect of increasing solar output, so, by counting the spots visible on the surface of our star, we have an indirect measure of its varying brightness. Such records have been kept for many centuries and match very well with the changes in marine productivity we are observing.
    In the sediment, diatom and fish-scale records, we also see longer period cycles, all correlating closely with other well-known regular solar variations. In particular, we see marine productivity cycles that match well with the sun’s 75-90-year “Gleissberg Cycle,” the 200-500-year “Suess Cycle” and the 1,100-1,500-year “Bond Cycle.” The strength of these cycles is seen to vary over time, fading in and out over the millennia. The variation in the sun’s brightness over these longer cycles may be many times greater in magnitude than that measured over the short Schwabe cycle and so are seen to impact marine productivity even more significantly.
    Our finding of a direct correlation between variations in the brightness of the sun and earthly climate indicators (called “proxies”) is not unique. Hundreds of other studies, using proxies from tree rings in Russia’s Kola Peninsula to water levels of the Nile, show exactly the same thing: The sun appears to drive climate change.
    However, there was a problem. Despite this clear and repeated correlation, the measured variations in incoming solar energy were, on their own, not sufficient to cause the climate changes we have observed in our proxies. In addition, even though the sun is brighter now than at any time in the past 8,000 years, the increase in direct solar input is not calculated to be sufficient to cause the past century’s modest warming on its own. There had to be an amplifier of some sort for the sun to be a primary driver of climate change.
    Indeed, that is precisely what has been discovered. In a series of groundbreaking scientific papers starting in 2002, Veizer, Shaviv, Carslaw, and most recently Svensmark et al., have collectively demonstrated that as the output of the sun varies, and with it, our star’s protective solar wind, varying amounts of galactic cosmic rays from deep space are able to enter our solar system and penetrate the Earth’s atmosphere. These cosmic rays enhance cloud formation which, overall, has a cooling effect on the planet. When the sun’s energy output is greater, not only does the Earth warm slightly due to direct solar heating, but the stronger solar wind generated during these “high sun” periods blocks many of the cosmic rays from entering our atmosphere. Cloud cover decreases and the Earth warms still more.
    The opposite occurs when the sun is less bright. More cosmic rays are able to get through to Earth’s atmosphere, more clouds form, and the planet cools more than would otherwise be the case due to direct solar effects alone. This is precisely what happened from the middle of the 17th century into the early 18th century, when the solar energy input to our atmosphere, as indicated by the number of sunspots, was at a minimum and the planet was stuck in the Little Ice Age. These new findings suggest that changes in the output of the sun caused the most recent climate change. By comparison, CO2 variations show little correlation with our planet’s climate on long, medium and even short time scales.
    In some fields the science is indeed “settled.” For example, plate tectonics, once highly controversial, is now so well-established that we rarely see papers on the subject at all. But the science of global climate change is still in its infancy, with many thousands of papers published every year. In a 2003 poll conducted by German environmental researchers Dennis Bray and Hans von Storch, two-thirds of more than 530 climate scientists from 27 countries surveyed did not believe that “the current state of scientific knowledge is developed well enough to allow for a reasonable assessment of the effects of greenhouse gases.” About half of those polled stated that the science of climate change was not sufficiently settled to pass the issue over to policymakers at all.
    Solar scientists predict that, by 2020, the sun will be starting into its weakest Schwabe solar cycle of the past two centuries, likely leading to unusually cool conditions on Earth. Beginning to plan for adaptation to such a cool period, one which may continue well beyond one 11-year cycle, as did the Little Ice Age, should be a priority for governments. It is global cooling, not warming, that is the major climate threat to the world, especially Canada. As a country at the northern limit to agriculture in the world, it would take very little cooling to destroy much of our food crops, while a warming would only require that we adopt farming techniques practiced to the south of us.
    Meantime, we need to continue research into this, the most complex field of science ever tackled, and immediately halt wasted expenditures on the King Canute-like task of “stopping climate change.”
    R. Timothy Patterson is professor and director of the Ottawa-Carleton Geoscience Centre, Department of Earth Sciences, Carleton University

  14. ChuckyD81 says:

    Jordan…
    Can you give a little more description of what you saw? IF…there were no apparent arcs, or elongated features with these colors you saw then perhaps they were iridescent clouds…i.e. they just appeared around the fringes of a thin cirrus cloud.
    Here’s a link…see if they look like any of these pics!
    http://www.atoptics.co.uk/droplets/iridim0.htm
    If there were some sort of arcing features…in other words the color didn’t JUST appear around the fringes of the cloud (or throughout the cloud if it were thin enough)…then it might have been some sort of halo/circle/arc feature. You would need to know the position of that feature relative to the sun to know what it was though.
    Tyler…
    I’ve only seen a Circumzenithal Arc a few times before as well. One of the best halo/arc displays I’ve ever seen was about 3-4 yrs ago when I lived in Asheville, NC. I got to see a complete 22 degree halo…a full parahelic circle (which by means of existence produced sundogs), the upper tangent arc and a very very subtle Circumzenithal arc. It was rather amazing actually! I’ve visited the site Mark linked to many many times before as it is usually (when significant halo events are documented) gets linked to on Spaceweather.com…which is a site I view on a daily basis! (I’m a big fan of atmospheric optics!) Anyway…it would be cool to photograph some of these events however I haven’t (in my few attempts) been able to block out the sun with an object well enough to expose the halos properly. Maybe a photographer such as yourself has some suggestions???

  15. Andrew---Ellensburg, Wa and Portrland, Or says:

    Up to 87 degree in ellenburg, might hit 90+ today.

  16. Ryan (Da Couve) says:

    It appears that we are going to have near perfect weather to close out June in my opinion. The showers this weekend are a bit of a bummer but other wise temps in the low 70s to low 80s are perfect.

  17. Andrew---Ellensburg, Wa and Portrland, Or says:

    Thanks for the update as always and thats a great photo!

  18. Gregg-Troutdale says:

    Thanks for the update Mark!!

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