Delighted to have two Great Horned Owls move into the neighborhood recently. A few #photographs below.
🌊 🌊 New Paper Out! 🌊 🌊
Led by Chris Brierley, our manuscript on Indian Ocean variability across the latest edition of various paleoclimate modeling intercomparison projects (#PMIP) is out in Climate of the Past (#CotP): https://cp.copernicus.org/articles/19/681/2023/cp-19-681-2023.pdf
We look at the consistency (& lack thereof) of simulated temperature responses & impacts on interannual hydroclimate changes over the Indian Ocean rim for the #midHolocene, #LGM, last #interglacial, and an abrupt 4 x CO₂ simulation. #Paleoclimate #Climate #IndianOcean #ClimateSimulations #ClimateOfThePast #ClimateChange
Two shots of a neighborhood Curve-Billed Thrasher.
A short #GoPro #timelapse video of sunset last evening seen from my office at #TheUniversityOfArizona (5th floor of the Gould-Simpson building). #Tucson
Some #macro #photography experiments with #succulents & #skulls using an #Olympus #Zuiko 30mm Macro lens + an #OMD EM1MarkII.
Yarrow’s Spiny Lizard seen on a gorgeous Spring day close to General Hitchcock campground, Mt. Lemmon in the #SantaCatalinas. #Tucson #lizards
Gorgeous sunset last evening at #Biosphere2 viewing the northern face of the #SantaCatalina #mountains
Nerdy details: we show using #stableisotopes of #carbon (δ¹³C) and #oxygen (δ¹⁸O) that **ONLY** Miliolida benthic foraminifera (including #Pyrgo, #Quinqueloculina, & #Spiroloculina - pictures attached) found **ONLY** in sediments proximal to methane hydrates (site U1446 is in the NW Bay of Bengal) contain wildly negative δ¹³C signatures characteristics associated with methane dynamics in marine sediments. Check out those δ¹³C values!!
🚨🚨New Paper Alert🚨🚨
We have a new paper out in Earth & Planetary Science Letters (#EPSL) entitled “Indian margin methane hydrate dissociation recorded in the carbon isotopes of benthic (Miliolida) foraminifera”
Main take home message: we have identified a group of #benthic #foraminifera (unicellular organisms living at the bottom of the #ocean) whose shell chemistry carries signatures of #methane dynamics within #marine #sediments.
Link to paper: https://www.sciencedirect.com/science/article/pii/S0012821X23001140
New paper out by @willerstorfi et al. in #GCA documenting the evaluation of planktic foraminiferal Na/Ca as a proxy for ocean salinity using plankton tows, sediment traps, and core tops: https://www.sciencedirect.com/science/article/abs/pii/S0016703723001187?
Take home message: looks like this proxy can be quite complex due to varying Na-bearing phases of the foraminiferal calcite, even though the Na/Ca in some of these phases may be strongly correlated to salinity. The authors conclude instead that due to the effect of [CO₃²⁻], foraminiferal Na/Ca over Cenzoic timescales may be a better proxy for major ion chemistry than salinity changes in the ocean.
Chalk another one up for the ever-charismatic #Orbulina universa - this time as #Gojira's classic, From Mars to Sirius. #foraminifera #deathmetal
#Benthic #foraminifera Bulumina aculeata as #Autopsy's Macabre Eternal. #deathmetal #forams
#Planktic #foraminifera #Orbulina #universa back at it again this time as #Sleep’s #HolyMountain
Earth/climate scientist at the #UniversityOfArizona (#Tucson).
📝 #GTD
🦜 #birds
🎹 #synths
🎸 #bassguitar
☀️ #mindfulness
📸 #photography
🌡️ #climate & #paleoclimate
🌊 #oceans & #paleoceanography
⚗️ #geochemistry & #biogeochemistry