🌏 🌊 I am an Earth/climate scientist at the University of Arizona in #Tucson (southwestern US) focusing on the areas of #climate change, #paleoclimates, and #paleoceanography, with an emphasis on #ENSO, #monsoons, & #variability.
⚗️🐚 Our group uses #inorganic #geochemistry incl. measurements of #stableisotopes & #tracemetals in #carbonate rocks & #fossils (e.g., #foraminifera, #mollusks, & #speleothems) alongside climate #observations as well as #simulations to advance understanding of how the Earth's #climate & #oceans have changed in the past and can change in the future.
Some of my hobbies include:
🎵 #music: I am a fan of #metal and heavy music of all sorts, but tend to migrate towards #black, #death, #doom, #drone, #sludge, & #thrash. I also have a soft spot for #carnatic/#hindustani #ragas, #darkambient, oldschool-ish #hiphop, #triphop, and various forms of #electronicmusic.
🦜 #birds & #birding #photography bring me joy. Right now, I feel v lucky to be briefly back in my hometown of #Bengaluru, southern India, after three long years being able to see #oldworld birds I grew up with.
👨🏾💻 #GTD, #mindfulness, #organization, and (vs?) #producivity are things that I enjoy thinking about. Of late, I've been using #Things3, #Streaks, #Hobonichi w a #Lamy Safari, #Obsidian, #Overleaf, & #Bookends to get things done.
🙏🏽 Thanks for reading!
We have a new #article out in #JGR #Atmospheres focusing on the tropical Pacific – Asian Monsoon relationship (and how it varies) across the last millennium using #paleoclimate data assimilation products: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023JD039207
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.)
"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…
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.
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
A nice, new #study out by Jörg Lippold & colleagues on #radiocarbon differences in co-occurring planktic #foraminifera. 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).
"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.
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.
And the fully formatted article is out! Link: https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2023PA004723
@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!
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.
Interesting to see what the #LoopCurrent is up to right now: looks like it is about to shed a warm-core #eddy — especially considering the prevailing easterlies. Wonder how this might affect the upcoming #Atlantic #storm season...
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