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Colette Heald

@coletteheald.bsky.social

Canadian πŸ‡¨πŸ‡¦, ETH professorπŸ‡¨πŸ‡­, atmospheric chemist, researcher, educator, wanderer, and wonderer

4,966 Followers  |  299 Following  |  67 Posts  |  Joined: 13.10.2023
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Posts by Colette Heald (@coletteheald.bsky.social)

Abstract Submission - iCACGP-IGAC 2026 Abstracts Submission Be part of the dynamic and engaging scientific program of iCACGP-IGAC 2026! Submit your abstract and share your

Atmospheric Chemistry within the Earth System: Understanding Changes and Impacts
7-11 September 2026
@igacproject.org
ABSTRACTS DUE 27 FEBRUARY 2026
Abstracts: icacgp-igac2026.org/abstract-sub...
Registration: icacgp-igac2026.org/registration/
Star studded Keynote and invited speakers list!

19.02.2026 12:33 β€” πŸ‘ 2    πŸ” 2    πŸ’¬ 0    πŸ“Œ 1
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Trump repeals U.S. government’s power to regulate climate The Environmental Protection Agency finishes the repeal of the β€œendangerment finding,” a landmark legal opinion underpinning policies regulating climate change.

Trump trying to make RCP8.5 happen.

13.02.2026 07:57 β€” πŸ‘ 91    πŸ” 25    πŸ’¬ 9    πŸ“Œ 1
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National Academies Publish New Report Reviewing Evidence for Greenhouse Gas Emissions and U.S. Climate, Health, and Welfare A new National Academies report reviews evidence gathered by the scientific community since 2009 on greenhouse gas emissions and their effects on U.S. climate, health, and welfare.

The @nasonline.org report provides a comprehensive overview of the science evidence linking greenhouse gas emissions to climate change impacts on human health and welfare www.nationalacademies.org/news/nationa...

12.02.2026 13:56 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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Xhuwaji – Haida Grizzly Bear
Bill Reid
1990

10.02.2026 20:30 β€” πŸ‘ 188    πŸ” 59    πŸ’¬ 0    πŸ“Œ 1
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Goodhart’s Law: Are Academic Metrics Being Gamed? Publishing a paper in academia is challenging, stimulating, and a bit baffling. Challenging because the research might fail. Stimulating because research may start assuming one outcome and finish with...

I just learned about Goodhart's Law "When a measure becomes a target, it ceases to be a good measure". So relevant to negative trends in academic publishing as discussed here: thegradient.pub/over-optimiz...

11.02.2026 11:42 β€” πŸ‘ 8    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

Two new faculty openings at U. Minnesota πŸ§ͺ

Assist. Prof. in Climate Science
hr.myu.umn.edu/jobs/ext/372...
Questions: Tim Griffis, tgriffis@umn.edu

Assist. Prof. in Soil Physics / Ecohydrology / Hydropedology
hr.myu.umn.edu/jobs/ext/372...
Questions: David Mulla, mulla003@umn.edu

Due March 13

11.02.2026 08:48 β€” πŸ‘ 6    πŸ” 7    πŸ’¬ 0    πŸ“Œ 0
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The Feeling You Haven't Had in a Long Time
Steve Driscoll
2021

27.01.2026 10:01 β€” πŸ‘ 134    πŸ” 37    πŸ’¬ 0    πŸ“Œ 0
Mark Carney's full speech at the World Economic Forum
YouTube video by National Post Mark Carney's full speech at the World Economic Forum

Tbf, this is probably the actual best thing in 2026 so far… youtu.be/btqHDhO4h10?...

21.01.2026 19:00 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

Macron apparently has an eye condition that requires him to look cool as hell.

bsky.app/profile/mark...

20.01.2026 15:02 β€” πŸ‘ 149    πŸ” 16    πŸ’¬ 6    πŸ“Œ 2

The worst climate and weather news you’ll see today.

16.01.2026 15:26 β€” πŸ‘ 179    πŸ” 77    πŸ’¬ 3    πŸ“Œ 2
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E.P.A. to Stop Considering Lives Saved When Setting Rules on Air Pollution

Whaaat?! The EPA's cost-benefit analysis of air pollution regulations can only consider costs to businesses but not health benefits?! This is nonsense.

GIFT ARTICLE: www.nytimes.com/2026/01/12/c...

13.01.2026 01:05 β€” πŸ‘ 74    πŸ” 32    πŸ’¬ 3    πŸ“Œ 1
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Winter Schoolhouse
Maud Lewis
c. 1958

07.01.2026 10:01 β€” πŸ‘ 179    πŸ” 43    πŸ’¬ 2    πŸ“Œ 1

After reviewing nearly 200 applications from prospective grad students and postdocs over the past few months for a couple different πŸ§ͺβš’οΈ postings, here are some tips, at least as they apply to North American positions. I hope they help future applicants. Share with your networks. 🧡

04.01.2026 14:17 β€” πŸ‘ 121    πŸ” 64    πŸ’¬ 4    πŸ“Œ 12
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Home for Christmas
Maud Lewis
c. 1958

25.12.2025 12:30 β€” πŸ‘ 321    πŸ” 84    πŸ’¬ 0    πŸ“Œ 1
UCAR statement on reports that NSF NCAR could be dismantled | NCAR & UCAR News

NCAR and UCAR have released a statement. NSF has not provided any guidance to UCAR or NCAR leadership about this whole situation. news.ucar.edu/133054/ucar-...

17.12.2025 05:12 β€” πŸ‘ 53    πŸ” 32    πŸ’¬ 0    πŸ“Œ 3

As someone who both loves the New Yorker and is learning German this does my head in. 🚫 to diaeresis

30.11.2025 19:50 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Americans don't understand the big deal about electric kettles because we're on 120 VAC. Once we see how fast water boils at 230 VAC, there's no going back.

30.11.2025 17:39 β€” πŸ‘ 268    πŸ” 17    πŸ’¬ 29    πŸ“Œ 3
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Investigating fire-induced ozone production from local to global scales Abstract. Tropospheric ozone (O3) production from wildfires is highly uncertain; previous studies have identified both production and loss of O3 in fire-influenced air masses. To capture the total ozo...

My last MIT student, Joe, explored what controls the ozone formed in fire plumes. His paper is out today in ACP. Happy Thanksgiving! acp.copernicus.org/articles/25/...

28.11.2025 10:10 β€” πŸ‘ 20    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0
HITEC | HITEC Fellows Call 2025/2026

PhD Opportunity on Volatiles from Plants & Climate Change 🌍πŸ§ͺ
Join @fz-juelich.de to explore how future climate scenarios impact plant emissions and atmospheric chemistry using mass spectrometry measurements. Learn more: www.hitec-graduate-school.de/call2025/ --> Project 4! #PhDOpportunity

27.11.2025 17:15 β€” πŸ‘ 11    πŸ” 6    πŸ’¬ 0    πŸ“Œ 0

Another terrifying article about Stardust, with (what I think is) some new info:
- they claim they'll finally release info on their secret particles starting in early 2026
- they plan a first atmospheric test in 2027
- they've been funding academic research (with one PI named)

24.11.2025 01:14 β€” πŸ‘ 7    πŸ” 2    πŸ’¬ 3    πŸ“Œ 0
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Haida Raven
Bill Reid ~ Haida
1972

23.11.2025 15:30 β€” πŸ‘ 210    πŸ” 51    πŸ’¬ 1    πŸ“Œ 2
Session AS3.2

If you work on sources and impacts of VOCs (biogenic or anthropogenic) from measurement to modeling perspectives please submit an abstract to our atmospheric organics session at #EGU26! Our invited speakers are @dbm.bsky.social and @jacquirickard.bsky.social See you in Vienna! tinyurl.com/55vda8u7

19.11.2025 08:11 β€” πŸ‘ 14    πŸ” 9    πŸ’¬ 0    πŸ“Œ 2

Thanks to Chuck Schumer, the assembly line at the Lucy/Charlie Brown football meme factory has broken down. Folks are advised to look for other metaphors until service can be restored.

10.11.2025 00:21 β€” πŸ‘ 543    πŸ” 97    πŸ’¬ 10    πŸ“Œ 1
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The β€˜pavement vigilante’: why Cameron Roh is naming and shaming bad walking etiquette He films people breaking his self-created β€˜laws’ of street decorum and posts the videos online – with many viewers expressing their gratitude. So watch out if you’re rushing along on your phone or whe...

I approve of pavement vigilantism! It’s chaos out there! www.theguardian.com/lifeandstyle...

08.11.2025 08:08 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Britain’s two-party politics is fragmenting: what unintended consequences await? | Andy Beckett On one hand, no more safe seats or long careers could mean less complacency. On the other, no big parties could mean greater corporate influence, says Guardian columnist Andy Beckett

I imagine that Brits trying to understand a fractured party system could look at Canadian political history.

Though recent Canadian history might suggest that party consolidation (at least under FPTP) is inevitable.

www.theguardian.com/commentisfre...

06.11.2025 17:36 β€” πŸ‘ 8    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0
a graphic showing the pantone numbers for the two core colors of the toronto blue jays. they are skydome blue (pantone 293) and Stieb Navy (pantone 282)

a graphic showing the pantone numbers for the two core colors of the toronto blue jays. they are skydome blue (pantone 293) and Stieb Navy (pantone 282)

a hat and canvas tote with the pantone number for Dodger Blue (294 C)

a hat and canvas tote with the pantone number for Dodger Blue (294 C)

I regret to inform everyone that my pedantic brain couldn’t let me live until I knew whether or not dodger blue and blue jays blue are the same blue. They are ONE PANTONE NUMBER APART.

29.10.2025 02:18 β€” πŸ‘ 4207    πŸ” 908    πŸ’¬ 110    πŸ“Œ 109

It’s okay, Jays. You’ll get β€˜em in game four, which starts ten minutes from now.

28.10.2025 06:53 β€” πŸ‘ 2284    πŸ” 261    πŸ’¬ 29    πŸ“Œ 6
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NΔ“nΔ“ says hello

25.10.2025 16:29 β€” πŸ‘ 145    πŸ” 6    πŸ’¬ 6    πŸ“Œ 0
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Up to $40 million in federal funding fuels research to revolutionize clean indoor air With the contract from the Advanced Research Projects Agency for Health, an interdisciplinary research team led by Virginia Tech and Linsey Marr will create a β€œsmoke alarm” for airborne contaminants t...

Could a β€œsmoke alarm” for airborne contaminants monitor and improve the quality of the air indoors? (Where Americans spend 90 percent of their time!)

An interdisciplinary research team led by @linseymarr.bsky.social will create such a system that could cut respiratory illnesses by 25 percent. πŸ‘

20.10.2025 20:17 β€” πŸ‘ 103    πŸ” 36    πŸ’¬ 4    πŸ“Œ 7
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Diindiisi - Blue Jay
Luke Swinson ~ Anishinaabe
n.d.

20.10.2025 23:01 β€” πŸ‘ 260    πŸ” 72    πŸ’¬ 4    πŸ“Œ 5