Jed O. Kaplan
@jedokaplan.bsky.social
Researcher, naturalist, educator, cook, father, explorer, traveler. University Professor and Canada Research Chair in geoscience. 🇺🇸🇧🇪🇨🇭🇨🇦 https://jedokaplan.github.io/
Environmental science
52%
Geography
19%
Reposted by Benjamin I. Cook
Published today: Importance of beginning industrial-era climate simulations in the eighteenth century
Defining pre-industrial to be 1750, rather than 1850, produces different (simulated) historical climate changes after 1850. Pre-1850 volcanoes & land use matter.
iopscience.iop.org/article/10.1...
Defining pre-industrial to be 1750, rather than 1850, produces different (simulated) historical climate changes after 1850. Pre-1850 volcanoes & land use matter.
iopscience.iop.org/article/10.1...
This is so important, and don’t forget that major land use change and deforestation occurred across Europe, Asia, and Africa long before even 1750.
Ed Hawkins
@edhawkins.org
· 8d
Published today: Importance of beginning industrial-era climate simulations in the eighteenth century
Defining pre-industrial to be 1750, rather than 1850, produces different (simulated) historical climate changes after 1850. Pre-1850 volcanoes & land use matter.
iopscience.iop.org/article/10.1...
Defining pre-industrial to be 1750, rather than 1850, produces different (simulated) historical climate changes after 1850. Pre-1850 volcanoes & land use matter.
iopscience.iop.org/article/10.1...
Job seekers: Excellent thread from my colleague @watershedlab.bsky.social. If you’re considering applying for any of my open positions, jedokaplan.github.io/opportunities/ consider reading this first!
I've updated the opportunities part of my website with fresh openings for researchers interested in climate and vegetation science, archaeology, history, and geography at all levels from undergraduate intern to postdoc. Take a look! jedokaplan.github.io/opportunities/
Work with me!
jedokaplan.github.io
Looking for: postdoc on quantitative history of China; postdoc on measuring wildfire fuels with LiDAR; PhDs on modeling fire in the boreal forest and the Pacific Northwest; MSc’s on earth system science; interns in many topics. Check it out!
This is truly hilarious.
Work with me!
jedokaplan.github.io
I've updated the opportunities part of my website with fresh openings for researchers interested in climate and vegetation science, archaeology, history, and geography at all levels from undergraduate intern to postdoc. Take a look! jedokaplan.github.io/opportunities/
Jed O. Kaplan
@jedokaplan.bsky.social
· Dec 2
Increasing late Holocene dust deposition in West Africa is amplified by land use change
Changes in dust deposition in West Africa over the mid- to late Holocene have traditionally been attributed to orbital forcing affecting the West Afri…
www.sciencedirect.com
Could prehistoric farmers and pastoralists have caused skies to be dustier than normal? What feedbacks could that dust have had to societies downwind? This paper was a long time coming, and I am really glad to see it published!
www.sciencedirect.com/science/arti...
#envhist #envhum
www.sciencedirect.com/science/arti...
#envhist #envhum
Jed O. Kaplan
@jedokaplan.bsky.social
· Nov 27
Thanks for this detailed comparison. I use freedom mobile and am satisfied with the speed and the included roaming but I don’t stream much video.
🚨 Postdoctoral opportunities! 🚨
Hello #econsky! We are hiring 2 postdocs in the department of economics at UCalgary for those working in *electricity economics*
Term: 2 years
Pay: $80,000/yr + benefits + $10k research allowance
Start: July 2026
Details in next two posts 👇
Hello #econsky! We are hiring 2 postdocs in the department of economics at UCalgary for those working in *electricity economics*
Term: 2 years
Pay: $80,000/yr + benefits + $10k research allowance
Start: July 2026
Details in next two posts 👇
Jed O. Kaplan
@jedokaplan.bsky.social
· Oct 20
Looks interesting! What’s the paper about?
Jed O. Kaplan
@jedokaplan.bsky.social
· Oct 3
🚨FOUR tenure track positions in my dept @ucalgary.bsky.social @ucalgaryscience.bsky.social in applied & computational geophysics, subsurface geochemistry, sedimentary geology, and sustainable soil science. careers.ucalgary.ca/search/jobs?...
(please reskeet widely!) #academicsky 🧪⚒️🇨🇦
(please reskeet widely!) #academicsky 🧪⚒️🇨🇦
Opportunities
matching 'earth'
Search 4 Careers available at University of Calgary.
careers.ucalgary.ca
Happy to chat about these opportunities and/or life in Calgary if you’re interested!
Reposted by Andy Baker, Jed O. Kaplan, Marc Strous
Opportunities
matching 'earth'
Search 4 Careers available at University of Calgary.
careers.ucalgary.ca
🚨FOUR tenure track positions in my dept @ucalgary.bsky.social @ucalgaryscience.bsky.social in applied & computational geophysics, subsurface geochemistry, sedimentary geology, and sustainable soil science. careers.ucalgary.ca/search/jobs?...
(please reskeet widely!) #academicsky 🧪⚒️🇨🇦
(please reskeet widely!) #academicsky 🧪⚒️🇨🇦
Jed O. Kaplan
@jedokaplan.bsky.social
· Sep 14
There are many ideas I agree with in this thread. But @mliebreich.bsky.social gets his guidance to science wrong.
6. Science. Scientists need to stop trying to scare people and focus on informing them. IPCC scenarios need to be plausible from an energy systems perspective, and they need to focus on the landing zone to which we might actually be headed. 24/n about.bnef.com/insights/cle...
Great thread and sub-threads to chase down on a Sunday afternoon. Interesting debate. Having just gotten out of my personal comfort zone to give a seminar on the history and current status of the SSP-RCPs and antecedent scenarios, I was glad to see it remains a very current topic for discussion!
Reposted by Jed O. Kaplan
Bob Kopp
@bobkopp.net
· Sep 14
6. Science. Scientists need to stop trying to scare people and focus on informing them. IPCC scenarios need to be plausible from an energy systems perspective, and they need to focus on the landing zone to which we might actually be headed. 24/n about.bnef.com/insights/cle...
Liebreich: The Pragmatic Climate Reset – Part II: A Provocation | BloombergNEF
As the debate on transition deepens, Michael Liebreich details how a pragmatic climate and energy reset might unfold.
about.bnef.com
There are many ideas I agree with in this thread. But @mliebreich.bsky.social gets his guidance to science wrong.
Jed O. Kaplan
@jedokaplan.bsky.social
· Sep 6
The Source of Europe's Mild Climate: The notion that the Gulf Stream is responsible for keeping Europe anomalously warm turns out to be a myth on JSTOR
Richard Seager, The Source of Europe's Mild Climate: The notion that the Gulf Stream is responsible for keeping Europe anomalously warm turns out to be a myth, American Scientist, Vol. 94, No. 4 (JULY...
www.jstor.org
You assert that "...the conveyor belt of currents in the Atlantic Ocean [is] responsible for Western Europe’s mild climate..." This idea is at the very least debatable. Richard Seager has argued for decades that it is not important at all, e.g., www.jstor.org/stable/27858...
Jed O. Kaplan
@jedokaplan.bsky.social
· Aug 26
Summer fermentation experiment homemade pickles. Taste is great but some are mushy. Any ideas to avoid mushy pickles?
Reposted by Garry Peterson, Ellen C. Hopmans, Elena Litchman
Jed O. Kaplan
@jedokaplan.bsky.social
· Aug 17
CRC Opportunities | Queen's University
Queen’s University invites applications for multiple Tier 1 and Tier 2 Canada Research Chairs (CRCs).
www.queensu.ca
It's not often that a senior professorship in paleolimnology comes long, but here is one great opportunity. Deadline September 10. If you consider applying and wonder what the process is like, feel free to reach out to me! www.queensu.ca/vpr/crc/oppo...
Jed O. Kaplan
@jedokaplan.bsky.social
· Jul 28
I have been waiting for you to comment on this fire. I still vividly remember reading “Fire on the Rim” as a teenager. Looking forward to seeing your thoughts!
Jed O. Kaplan
@jedokaplan.bsky.social
· Jul 20
The Turkeyfeather Fire in the Gila Wilderness, NM has burned as a low-severity fire over about 24,000 acres (so far). This is a continuation of a fire regime that existed for millennia before the 20th century. This 🧵reviews the fire history of the Gila, as my colleagues and I have studied it. 1/18
Really enjoyed this thread and got me thinking about how we could evaluate our fire model output in such a data-rich area. Wonder: what was more important for 20th century suppression, grazing or FS crews?
Tom Swetnam
@firescar.bsky.social
· Jul 20
The Turkeyfeather Fire in the Gila Wilderness, NM has burned as a low-severity fire over about 24,000 acres (so far). This is a continuation of a fire regime that existed for millennia before the 20th century. This 🧵reviews the fire history of the Gila, as my colleagues and I have studied it. 1/18
Jed O. Kaplan
@jedokaplan.bsky.social
· Jun 21
There was a tragic rockfall yesterday afternoon at Bow Glacier Falls in Banff National Park. Here's a recent story from @ctvnewscalgary.bsky.social about it. I'll try to explain my understanding of the event here over the next few minutes. www.ctvnews.ca/calgary/arti... 🧪⚒️
https://www.ctvnews.ca/calgary/article/one-dead-three-injured-in-banff-national-park-rockslide/🧪⚒️
Great explainer from my colleague Dan.
Reposted by Jed O. Kaplan
https://www.ctvnews.ca/calgary/article/one-dead-three-injured-in-banff-national-park-rockslide/🧪⚒️
There was a tragic rockfall yesterday afternoon at Bow Glacier Falls in Banff National Park. Here's a recent story from @ctvnewscalgary.bsky.social about it. I'll try to explain my understanding of the event here over the next few minutes. www.ctvnews.ca/calgary/arti... 🧪⚒️
Jed O. Kaplan
@jedokaplan.bsky.social
· Jun 17
Cool diagram. Will use this next time I teach intro meteorology.
Jed O. Kaplan
@jedokaplan.bsky.social
· Jun 12
Mixed severity burn from 2022 at Kootenay Lake, British Columbia. Photo taken in spring 2025.
Jed O. Kaplan
@jedokaplan.bsky.social
· Jun 12
┏┓
┃┃╱╲ in
┃╱╱╲╲ this
╱╱╭╮╲╲house
▔▏┗┛▕▔ we believe
╱▔▔▔▔▔▔▔▔▔▔╲
“mixed severity” is a meaningless fire regime concept 💘
╱╱┏┳┓╭╮┏┳┓ ╲╲
▔▏┗┻┛┃┃┗┻┛▕▔
┃┃╱╲ in
┃╱╱╲╲ this
╱╱╭╮╲╲house
▔▏┗┛▕▔ we believe
╱▔▔▔▔▔▔▔▔▔▔╲
“mixed severity” is a meaningless fire regime concept 💘
╱╱┏┳┓╭╮┏┳┓ ╲╲
▔▏┗┻┛┃┃┗┻┛▕▔
Good thread. Having thought about these issues a lot myself and recognizing that landscape scale wildfires are rarely all of one severity or another, I enjoyed this back and forth.
Reposted by Jed O. Kaplan
gavin jones
@ecologyofgavin.bsky.social
· Jun 12
┏┓
┃┃╱╲ in
┃╱╱╲╲ this
╱╱╭╮╲╲house
▔▏┗┛▕▔ we believe
╱▔▔▔▔▔▔▔▔▔▔╲
“mixed severity” is a meaningless fire regime concept 💘
╱╱┏┳┓╭╮┏┳┓ ╲╲
▔▏┗┻┛┃┃┗┻┛▕▔
┃┃╱╲ in
┃╱╱╲╲ this
╱╱╭╮╲╲house
▔▏┗┛▕▔ we believe
╱▔▔▔▔▔▔▔▔▔▔╲
“mixed severity” is a meaningless fire regime concept 💘
╱╱┏┳┓╭╮┏┳┓ ╲╲
▔▏┗┻┛┃┃┗┻┛▕▔
Jed O. Kaplan
@jedokaplan.bsky.social
· Jun 9
No. no. Just no.
Jed O. Kaplan
@jedokaplan.bsky.social
· May 31
Heartbreaking photo. I have so many great memories of inspiring times at the GISS lab in Manhattan.
Jed O. Kaplan
@jedokaplan.bsky.social
· May 21
How was Hong Kong able to keep COVID19 out for so long? Essentially by reducing inbound travel volume and using quarantine, everything else was basically theatrics: www.sciencedirect.com/science/arti...
Assessing the effectiveness of travel control measures in preventing imported COVID-19 cases reveals the critical role of travel volume
Although travel control measures have played a key role in mitigating COVID-19 spread in certain regions, few empirical observational studies have spe…
www.sciencedirect.com
Those were the days. I’ll never forget my two weeks in solitary confinement at the Penny’s Bay COVID detention camp.
Reposted by Jed O. Kaplan
Karen Grépin
@karengrepin.bsky.social
· May 20
Assessing the effectiveness of travel control measures in preventing imported COVID-19 cases reveals the critical role of travel volume
Although travel control measures have played a key role in mitigating COVID-19 spread in certain regions, few empirical observational studies have spe…
www.sciencedirect.com
How was Hong Kong able to keep COVID19 out for so long? Essentially by reducing inbound travel volume and using quarantine, everything else was basically theatrics: www.sciencedirect.com/science/arti...