Climate Change Discussion

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Monty
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Re: February 2020 Forecasts and Discussions

Post by Monty » Sat Feb 15, 2020 11:32 am

Abby_wx wrote:
Fri Feb 14, 2020 9:35 pm
It would be interesting to hear more on this subject. Is it entirely due to CO2, or are there another factors at play (what)?

I remember all of the talk about a cold period beginning around 2017... +/- two years as the margin of error, if I recall correctly. Well, it's been three years and we're at the bottom of the solar cycle... so this cold must be really taking its time. :lol:
The low solar equals high latitude blocking theory certainly fell flat on its face this season. Blocking has been almost non existent this winter. And the stratospheric PV has been on steroids.
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Re: February 2020 Forecasts and Discussions

Post by Abby_wx » Sat Feb 15, 2020 2:01 pm

moonshadow0825 wrote:
Sat Feb 15, 2020 9:00 am
I agree with you on this for a couple of reasons, and similar to you I do believe climate is changing I am just not convinced CO2 is THE reason

first: historically we've had way warmer periods that weren't tied to CO2 emissions, this is from the University of Oslo department of Geosciences
Unfortunately that graph is for a single location, so it tells us nothing about the temperature around here during the time periods indicated.

For example, most contemporary research seems to refute the idea that the Medieval Warm Period was a global phenomena. The bulk of evidence points to current global temperatures being the warmest in the past 2000 years.


https://blogs.ei.columbia.edu/2019/07/2 ... at-werent/
https://www.researchgate.net/publicatio ... arm_Period
https://www.sciencedaily.com/releases/2 ... 145919.htm


Agree with the rest of your post, though.
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January 2020 Cold Snap Stats

Date/Lo/Hi/Snowfall(cm)
12/-7.4/3.9/2.0
13/-10.3/-7.3/1.0
14/-11.7/-9.7/2.0
15/-12.4/-5.1/8.0
16/-8.4/-4.1/3.4
17/-10.2/-1.9/trace
18/-3.3/1.1/4.0
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Re: February 2020 Forecasts and Discussions

Post by moonshadow0825 » Sun Feb 16, 2020 8:20 am

Abby_wx wrote:
Sat Feb 15, 2020 2:01 pm
Unfortunately that graph is for a single location, so it tells us nothing about the temperature around here during the time periods indicated.

For example, most contemporary research seems to refute the idea that the Medieval Warm Period was a global phenomena. The bulk of evidence points to current global temperatures being the warmest in the past 2000 years.


https://blogs.ei.columbia.edu/2019/07/2 ... at-werent/
https://www.researchgate.net/publicatio ... arm_Period
https://www.sciencedaily.com/releases/2 ... 45919.htmI


Agree with the rest of your post, though.
thanks :) and thanks as well for those links, I would have been nice to be able to read the full paper from research gate as the abstract was interesting.

I agree with you that the bulk of the work on the Medieval Climate Anomaly (apparently that's the new term :D ) is limited to areas with civilizations that routinely recorded climate data such as Northern Europe and China and may not apply elsewhere. Unfortunately the rest has to be done by proxy which then invites interpretation of results :shock: .

I think the real issue is climate science is relatively new and cannot be considered "settled". a quick Google search "medieval warm period (insert location)", like the CO2 search, brings up pages of scientific articles that contradict each other, almost all of which are peer reviewed.

for example, looking for research on a warm period in the southern hemisphere I found in quick succession I found an article that claimed it didn't exist
http://www.antarctica.gov.au/magazine/2 ... ifferences

and another that said it did in the Western Antarctic but less obviously in the Eastern portions
https://www.sciencedirect.com/science/a ... 8219303190

both papers about Antarctica published and peer reviewed yet both papers coming to completely different conclusions.

There was a 3rd paper focused on the southern hemisphere that claimed warming could be found globally at higher elevations and inland locations but that coastal locations may have cooled because of an upswell of deep water :shrug:
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Re: Climate Change Discussion

Post by Glacier » Sun Feb 16, 2020 6:16 pm

"Being a skeptic isn’t hard. Being a consistent skeptic is really hard."
- Cameron Bertuzzi
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Re: Climate Change Discussion

Post by Glacier » Thu Feb 20, 2020 4:26 pm

New climate report from the Okanagan.
okreport.png
They claim that the summer is the driest season of the year!

LOL!!!!!
Pentictondailyprecip.png
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