[MCN] "I can't breathe" -- if ocean fish could speak

[Annie Heuscher]

I realize that this listserv has become anemic in recent years, but I'm
surprised that no one responded to this email from Lance Olsen. Lance, it
is so completely unacceptable that you capitalized on George Floyd's death
in the subject line of your email. That is crass and deeply problematic.

I would hope that it has become apparent to you over the past several years
that your domination of this listserv has rendered it completely unutilized
by others in the community. While I'm sure your emails are sent with
helpful intent, what used to be a vibrant listserv sharing housing,
activism opportunities, job opportunities, and issues of community concern
has seemed to become your personal platform for sending 2-3 articles per
day. Many days, you are the only person sending emails to the listserv. I
know that this issue has been raised before and that the admin jumped on
the back of those who commented on your overuse of this list but I would
strongly encourage you to cut back dramatically on your emails to this
listserv (1-2 emails per *month *would be reasonable and would compare
fairly with others' usage of the listserv) and for those emails you do
send, I would ask that you never again take advantage of the Black Lives
Matter movement and the death of black people at the hands of police
brutality for spreading your message.

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Message: 3
Date: Fri, 12 Jun 2020 17:47:22 -0600
From: Lance Olsen <lance at wildrockies.org>
To: missoula-community-news at bigskynet.org
Subject: [MCN] "I can't breathe" -- if ocean fish could speak
Message-ID: <0B608BFC-904A-4513-9A23-758ACDDB4B89 at wildrockies.org>
Content-Type: text/plain; charset="utf-8"

Geophysical Research Letters June 16, 2020
https://doi.org/10.1029/2019GL086345 <https://doi.org/10.1029/2019GL086345>

Increasing Escape of Oxygen From Oceans Under Climate Change

Changyu Li <
https://agupubs.onlinelibrary.wiley.com/action/doSearch?ContribAuthorStored=Li%2C+Changyu>
Jianping Huang <
https://agupubs.onlinelibrary.wiley.com/action/doSearch?ContribAuthorStored=Huang%2C+Jianping>
Lei Ding <
https://agupubs.onlinelibrary.wiley.com/action/doSearch?ContribAuthorStored=Ding%2C+Lei>
Xiaoyue Liu <
https://agupubs.onlinelibrary.wiley.com/action/doSearch?ContribAuthorStored=Liu%2C+Xiaoyue>
Haipeng Yu <
https://agupubs.onlinelibrary.wiley.com/action/doSearch?ContribAuthorStored=Yu%2C+Haipeng>
Jiping Huang <
https://agupubs.onlinelibrary.wiley.com/action/doSearch?ContribAuthorStored=Huang%2C+Jiping
>

Abstract
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019GL086345 <
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019GL086345>
The global oxygen cycle is one of the most important cycles on Earth for
all aerobic organisms, and it is a basic constraint sustaining aerobic
life. As a major component of the cycle, oceans are now experiencing
widespread declines in oxygen concentrations. Here, based on model
simulations we found that ocean deoxygenation occurs as a result of oceanic
oxygen outgassing, which is tightly related with the marine warming.
Although the O2 flux from the ocean to atmosphere is quite small compared
with that of oceanic oxygen production, this outgassing accounts for almost
all of the decline in marine oxygen and even exceeds the amount of the
loss. The model projections indicate accelerated oxygen escape from the
ocean under climate change. The oceanic outgassing will increase from 1.6
to 4.3 Gt/yr over the 21st century due to solubility and circulation
changes related with warming, which may eventually lead to a more hypoxic
ocean in the future.

Plain Language Summary
It is well?known that O2 is fundamental for all aerobic life. However, the
oxygen content of the ocean has been declining during the past few decades.
This phenomenon, known as the ?ocean deoxygenation,? will have widespread
consequences, which could eventually threaten the marine ecosystems. In
this study, we systematically diagnosed the global oceanic oxygen budget on
the basis of earth system models and found enhanced O2 escape from the
ocean to atmosphere. The O2 outgassing is directly responsible for ongoing
deoxygenation, and it will continue to increase in the future. A shift in
the oceanic oxygen cycle characterized by increasing oxygen escape has been
occurring as a consequence of human?induced climate change, followed by
intensified ocean deoxygenation and resulting in severe damage to marine
biota.

*********************************************   I have the pdf
 **************************************

?Precipitation is just the supply side," said study coauthor Jason Smerdon,
a Lamont-Doherty paleoclimatologist. "Temperature is on the demand side,
the part that dries things out."

"If we don't see it coming in stronger in, say, the next 10 years, we might
have to wonder whether we are right," said (Kate) Marvel. "But all the
models are projecting that you should see unprecedented drying soon, in a
lot of places."

Precipitation over much of central America, Mexico the central and western
United States and Europe is projected to stay about the same, or even
increase. But, according to both the new study and a separate 2018 paper,
rising temperatures and resulting evaporation of moisture from soils in
those regions will probably predominate.

https://www.eurekalert.org/pub_releases/2019-05/eiac-ssf042919.php <
https://www.eurekalert.org/pub_releases/2019-05/eiac-ssf042919.php>
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