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Warm nights

Discussion in 'Environmental Discussion' started by bwilson4web, Aug 22, 2016.

  1. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Source: Huntsville sets new record for warm nighttime temperatures | WHNT.com

    HUNTSVILLE, Ala. – As of Sunday morning, Huntsville has recorded 50 consecutive days with low temperatures at or above 70 degrees. This sets a new record, according to the National Weather Service in Huntsville.

    The previous record of consecutive days with lows at or above 70 was 49, set back in the summer of 2010.

    Our current stretch of warm overnight temperatures likely ends Sunday night into Monday morning with a brief appearance of fall-like weather. Temperatures are expected to drop into the low and middle 60s for two nights as drier air settles into north Alabama.

    One of the climate model predictions is warmer nights. The lethality of the heat spell in India was attributed to hot nights.

    Bob Wilson
     
  2. austingreen

    austingreen Senior Member

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    So here we have a great example of comfirmation bias.

    Prediction Fossil burn -> Hotter nights
    Prediction Fossil burn -> more extreme weather

    We then look for data that supports the hypothesis while not bothering to look at other data.

    Warmer nights -> less extreme cold weather -> less deaths from cold. So we go looking for india heat wave that goes against the bulk of the data. But if we dig ...

    In the US deaths from heat causes were way down bellow average in 2015, while up in India. In the US deaths from flooding were way up, but down in india. The monsoons did not cool down india as normal, but a bad (low) monsoon season is associated with lower deaths from flooding. Only one of the indian states experienced the much higher death toll.

    Conclusion too little data, but certainly the data supports the null hypothesis -> deaths were results of different rain fall closely associated with ocean oscilations not directly tied to ghg.

    If you can tie ENSO and other ocean phanomina with ghg, then that would be the link. Most data does not support a direct relationship leading to increase deaths sometimes called extreme weather.

    Nights are definitely getting warmer and this is not uniform accross the planet. It is mainly in cold places, where warmer nights are not considered extreme weather but work to counter it.
     
  3. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Actually I wasn't looking for anything. It was a local news story about our little patch of the earth's surface. It reminded me of the Indian, heat deaths a year or so ago. It also recalled the "Denial 101" section that discussed the climate model effects. Regardless, I'm fairly sanguine about such things and dismissing it as "comfirmation bias" . . . well gosh darn . . .

    Source: A brief history of fossil-fuelled climate denial

    To reduce the influence of climate science denial, we need to understand it. This requires awareness of both the role of political ideology and the support that ideological groups have received from vested interests.

    Without this understanding, it’s possible to make potentially inaccurate accusations such as climate denial being purely motivated by money, or that it is intentionally deceptive. Psychological research tells us that ideologically driven confirmation bias (misinformation) is almost indistinguishable from intentional deception (disinformation).

    One of the other techniques is to raise impossible expectations such as "If you can tie ENSO and other ocean phanomina with ghg, then that would be the link. Most data does not support a direct relationship leading to increase deaths sometimes called extreme weather." That along with facts not in evidence, ". . . different rain fall closely associated with ocean oscilations not directly tied to ghg."

    Regardless, the models predict things that seem to be happening. Darn those pesky models.

    Bob Wilson
     
  4. austingreen

    austingreen Senior Member

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    Well if you read from a politically charged manual called denial 101, one of your tools is to push for more confirmation bias.
    See here. Constructive criticism of a bad scientific technique drops me into. Dum de dum denial. Now I appologize if you weren't trying to tie deaths from the indian heat wave to climate with some hand waving, but we have scientific ways to decide if it can be attributed to ghg versus ocean oscilations. I expect one to pop up from NOAA in the not too distant future. This would take the shape of would the weather be as extreme if ghg levels were lower. Definitely those with a vested interest in calling scientific inquiry denial, will reject such studies. Trenberth recently reversed his totally unscientific huricane's more frequent and more extreme under more ghg under mountains of evidence versus his gut.
    Well yes one technique to be skeptical of extreme predictions is to use science. I won't deny that. But calling a scientific method to attribute the effect denial is just plain wrong. Yes I know politically lots more people will follow you if you call science names. Hell look at all the creationists out there. But why not follow the science?

    So did the climate models predict the low level of monsoons and heat wave in india? No of course not. This is after the fact attribution based on ... confirmation bias. Why not look at the US too, or Russia? Because we did not see the same things, and the data does not support. Remember global climate change is global.
     
  5. Mendel Leisk

    Mendel Leisk Senior Member

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    I wonder what dark rooftops and great swaths of asphalt paving are doing. Also, I get annoyed, not quite sure why, walking by folks sitting buttoned up in their parked cars, engines running, AC fans incessantly cycling.
     
  6. iplug

    iplug Senior Member

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    Here's a major reason for decreased deaths in the U.S. attributed to heat:

    [​IMG]

    The vast lower classes in India aren't nearly as fortunate. Flooding is yet much more difficult to engineer against.
     
    Trollbait and bwilson4web like this.
  7. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Certainly the warm nights have kept our air conditioners running and the usual, annual electrical usage spike:
    [​IMG]

    One of the best alternatives to PVC array would be solar-powered, cooling. I'm thinking ammonia-absorption would work very nicely. Then if we could use the pool as a heat collector in the winter. It could be a win-win.

    Bob Wilson
     
  8. austingreen

    austingreen Senior Member

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    I was talking about 2011 versus 2015, when the indian spike of deaths occurred, I don't think air conditioning installed between 2011 and 2015 is reasponsible for lower deaths in US.

    Study ranks US cities based on the urban heat island effect on temperatures
    urban heat island effect is great in certain cities like Miami, but is far more dangerous in India
    How urban heat islands are making India hotter | John Vidal and Samarth Pathak | Global development | The Guardian
     
  9. iplug

    iplug Senior Member

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    No implied specific dates here. The graph was posted to show association with diminished US heat related deaths/morbidity. Regardless, the progressively growing installed air conditioning base has helped even in that short period of time. This is particularly true in the Western states such as California where we have seen more of the higher temperature spectrum in global variance in the last few years. In my occupation, I see this in real time, and yes, it's real.

    Agree, have to look at many systems and variables. There are local happenings and global happenings and some of these may or may not be related.
     
  10. bisco

    bisco cookie crumbler

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    i think we had our longest streak of a/c in the 12 years we've been in this house. most nights above 70 and a drought on top of it all. finally broke today, 75 degrees and half inch of rain last night. but heat coming back in a day or two.