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Andrew Dessler

"climate scientists are exaggerating the impacts of climate change"

[the planet Earth]: "Hold my beer"

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Kau)))

We have a new out in focusing on the tropical Pacific – Asian Monsoon relationship (and how it varies) across the last millennium using data assimilation products: agupubs.onlinelibrary.wiley.co

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Kau)))

A new article in by staff & myself on some best practices for peer-reviews: eos.org/editors-vox/the-dos-an

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John Kennedy

Outside of Greenland and Antarctica, very few land areas were even close to average during the NH summer. You can also see the developing El Nino. Plot from: data.giss.nasa.gov/gistemp/map

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legraLeGra

In 1979, Jules Charney (and team) produced

"Carbon Dioxide and Climate: A Scientific Assessment”

They examined two models. Manabe's GFDL model and, wouldn't you know, the not-yet-even-described GISS Climate model by Jim Hansen and others. (We call it ‘Model I’ because we're inventive.)

They concluded
"taking into consideration all the above direct effects and feedbacks, we estimate ... 𝚫T for doubled CO2 to lie in the range of 1.6 to 4.5 K”

Again-- things haven't changed so much…

15/many

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legraLeGra

Next week, #NASA Goddard Institute for Space Studies turns 60, and we are celebrating our anniversary with some retrospective talks on our history… and forward thinking talks about our future.

I have been appointed to present “History and Future of #Climate Modeling”, so I’ve been interviewing many GISS alumni.

The back-stories to the published development are fascinating.

I’ve asked my boss to get a film maker to document these oral histories better. It would make a great documentary imho.

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Scott Doney

accepted version of new paper available today in Global Biogeochemical Cycles: Magnitude, trends, and variability of the global ocean carbon sink from 1985-2018

This contribution to the RECCAP2 (REgional Carbon Cycle Assessment and Processes) assessment analyzes the processes that determine the global ocean carbon sink, and its trends and variability over the period 1985-2018, using a combination of models and observation-based products. Key points:

The RECCAP2 global ocean analysis provides an authoritative multi-model and observation-based assessment of global ocean CO2 uptake

pCO2-based products yield a mean sea-air CO2 flux from 1985-2018 of -1.6±0.2 PgC yr-1 with a trend of -0.61 PgC yr-1 decade-1 since 2001

Ocean anthropogenic CO2 uptake averages -2.1-2.4 PgC yr-1 from 1985-2018, with a trend of -0.34-0.41 PgC yr-1 decade-1 since 2001

#ocean #carbon #ClimateChange #co2 #agu #biogeochemistry

agupubs.onlinelibrary.wiley.co

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David Ho

In case you don’t believe the same equations govern #motion in the #atmosphere and the #ocean.

Video by Tristan Heth in Tenerife, Canary Islands, Spain.

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Kau)))

Woah!! It looks like there is a up in the ? (Sorry for the poor quality video!)

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Kau)))

@bee8bit Ah! So it has to do with the fact that the subsurface-dwelling planktic foraminifera are living in "older", deeper waters (~500 m), as opposed to the others which are living in upper waters at the surface (0-50 m). While making shells, the surface bugs readily equilibrate with atmospheric radiocarbon (and hence gives accurate dates). The scientists are looking at dating sediment cores taken from the bottom of the ocean, which contain shells deposited from above; but plankton that lived in 0-50 m and >300 m (and even those living at the ocean bottom), all "co-occur" in the sediments (or mud/clay) that is brought in by rivers or wind. This is why its important to only date shells of surface-ocean species of plankton from marine sediment cores as opposed to the deeper-dwelling ones (w nice experiment borne out in that article).

If two types of plankton were living in the same waters, their source of carbon is the same, and hence their shells will not give different ages.

Sorry to be long, but hopefully simple!

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Kau)))

A nice, new out by Jörg Lippold & colleagues on differences in co-occurring planktic . They document how subsurface-dwellers like G. truncatulinoides have ages offset, on average, by ~300 14-C yrs compared to surface-ocean species (like G. ruber & T. sacculifer).

cambridge.org/core/services/ao

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Dr. Brad Rosenheim

"Imagine the future..."

Ironic and likely iconic photo shared by Tom Hallock, professor at USF. South of downtown St. Petersburg, FL, which was about 115 miles (at the closest) to a Category 2 (at the time) hurricane, August 30, 2023.

#HurricaneIdalia
#ClimateCrisis
#GlobalWarming
#UrbanFlooding
#ImagineTheFuture

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Rob Larter

A thread about the extreme anomaly in Antarctic sea-ice extent this year, the present state of knowledge on the reasons for it and why further research is important.
I find the sharp downward trend in Antarctic sea-ice extent that started 7 years ago deeply unsettling, which is why I toot about it a lot.
1/n

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@Fury Love the Lamy and the Kawecos! Got a few of those here too!

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And the fully formatted article is out! Link: agupubs.onlinelibrary.wiley.co
QT: qoto.org/@kau/1108993792019759

Kau)))  
New article out in #Paleoceanography & #Paleoclimatology where we (Chris Maupin & myself) briefly recount how scientists have sought to und...
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Dr Micha Campbell

Nice paper out recently from some #UNSW colleagues in GRL linking ENSO and synoptic weather in Australia.

agupubs.onlinelibrary.wiley.co

#ENSO #ElNino #LaNina #Weather #climate

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Kau)))

@alexwild I *just* visited the National Museum of Anthropology in México City (fresh on my mind — yesterday!) and boy, hands down, my favorite and most impressive museum I’ve ever visited! Why? The collections are MASSIVE and the exhibits are so well curated; indigenous peoples and civilizations of Mesoamerica are represented excellently in space & time. To top it all off, the architecture is stunning!

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Kau)))

@alexwild I *just* visited the National Museum of Anthropology in México City (fresh on my mind — yesterday!) and boy, hands down, my favorite and most impressive museum I’ve ever visited! Why? The collections are MASSIVE and the exhibits are so well curated; indigenous peoples and civilizations of Mesoamerica are represented excellently in space & time. To top it all off, the architecture is stunning!

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Daniel Swain

Palm Springs just recorded its heaviest hourly rainfall on record, and intense tropical downpours could continue for hours in the Coachella Valley. Urban and flash flooding will further escalate in coming hours throughout the SE CA deserts. #CAwx t.co/Im37SgdzNf

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Alex Wild

Montevideo, the Capitol of Uruguay and home to about 2 million people, is out of water in the midst of a prolonged drought. The government is trying to secure bottled water as an emergency measure.

#climatechange #Montevideo #Uruguay

en.mercopress.com/2023/07/06/u

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