Presenter's Choice (Spring 2021)

GEOL 5705 - Seminar in Paleoclimate

Phanerozoic paleoclimate

Course description: This course will entail a weekly seminar-style critical reading of journal articles in paleoclimate (one paper per week). This year, papers will be drawn from the recent literature according to student interest. Papers may address any time interval within the Cenozoic, and any aspect of Earth's climate system.

Expectations and grading: During the semester, each student will be required to lead the discussion of several papers. Each presenter will be selected two weeks ahead of time so that they have one week to choose a paper and inform the class. One of the first two papers presented by each student is to be delivered as a 'formal' AGU style PowerPoint presentation (<15 minutes). Other papers may be presented informally and with or without visual aids, according to the presenter's preference. Each week, everyone is responsible for reading the papers and participating in the discussions. Grades will be based on overall participation (50%) and on the effort put into the presentations and discussion-leading (50%).

Meets: Wednesdays 12:40-1:30, via Zoom for now
Zoom meeting ID: tmarchitto
Zoom link
Instructor:Tom Marchitto, tom.marchitto@colorado.edu
Office Hours: By appointment
Credits: 1

 

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Course schedule (updated weekly)

We will only be discussing the papers with names assigned after them; the others are for background. Note that most of the links below must be accessed from a campus computer or via a CU VPN. Refresh your browser if links are missing or dead

January 27: Starr et al. (2021) Antarctic icebergs reorganize ocean circulation during Pleistocene glacials (Tom)

February 3: Cramwinckel et al. (2018) Synchronous tropical and polar temperature evolution in the Eocene (Lina)

February 10: Sewall et al. (2000) Climate sensitivity to changes in land surface characteristics (Anne)

February 17: No class (wellness day)

February 24: Menviel et al. (2018) Southern Hemisphere westerlies as a driver of the early deglacial atmospheric CO2 rise (Cole)

March 3: Raia et al. (2020) Past Extinctions of Homo Species Coincided with Increased Vulnerability to Climatic Change (Emily)

March 10: Ibarra et al. (2018) Warm and cold wet states in the western United States during the Pliocene–Pleistocene (Anne)

March 17: Daradich et al. (2017) The influence of true polar wander on glacial inception in North America (Cole)

March 24: Yu et al. (2020) Last glacial atmospheric CO2 decline due to widespread Pacific deep-water expansion (Emily)

March 31: Tierney et al. (2020) Glacial cooling and climate sensitivity revisited (Lina)

April 7: Abe-Ouchi et al. (2013) Insolation-driven 100,000-year glacial cycles and hysteresis of ice-sheet volume (Cole)

April 14: Zhang et al. (2019) The evolution of latitudinal temperature gradients from the latest Cretaceous through the Present (Anne)

April 21: Westerhold et al. (2020) An astronomically dated record of Earth’s climate and its predictability over the last 66 million years (Emily)

April 28: Rustic et al. (2020) Modulation of late Pleistocene ENSO strength by the tropical Pacific thermocline (Lina)

List of possible papers that look interesting (a work in progress). Sorted in rough stratigraphic order according to the time period considered. This lists reflects the bias of Tom's interests, and students are very welcome to make their own suggestions!

• Caesar et al. (2021) Current Atlantic Meridional Overturning Circulation weakest in last millennium
• Mann et al. (2021) Multidecadal climate oscillations during the past millennium driven by volcanic forcing (or, The AMO does not exist)
• Bramante et al. (2020) Increased typhoon activity in the Pacific deep tropics driven by Little Ice Age circulation changes
• Degroot et al. (2021) Towards a rigorous understanding of societal responses to climate change
• Lapointe et al. (2020) Annually resolved Atlantic sea surface temperature variability over the past 2,900 y
• Brierley et al. (2020) Large-scale features and evaluation of the PMIP4-CMIP6 midHolocene simulations
• Bova et al. (2021) Seasonal origin of the thermal maxima at the Holocene and the last interglacial
• Barker et al. (2019) Early Interglacial Legacy of Deglacial Climate Instability
• Li et al. (2020) Rapid shifts in circulation and biogeochemistry of the Southern Ocean during deglacial carbon cycle events
• Gottschalk et al. (2020) Glacial heterogeneity in Southern Ocean carbon storage abated by fast South Indian deglacial carbon release
• Shuttleworth et al. (2021) Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans
• Nehrbass-Ahles et al. (2020) Abrupt CO2 release to the atmosphere under glacial and early interglacial climate conditions
• Yu et al. (2020) Last glacial atmospheric CO2 decline due to widespread Pacific deep-water expansion
• Zhu et al. (2021) Assessment of equilibrium climate sensitivity of the Community Earth System Model version 2 through simulation of the Last Glacial Maximum
• Rae et al. (2020) Overturning circulation, nutrient limitation, and warming in the Glacial North Pacific
• Klockmann et al. (2020) Coupling of the Subpolar Gyre and the Overturning Circulation During Abrupt Glacial Climate Transitions
• Corrick et al. (2020) Synchronous timing of abrupt climate changes during the last glacial period
• Walczak et al. (2020) Phasing of millennial-scale climate variability in the Pacific and Atlantic Oceans
• Windler et al. (2020) Unraveling Glacial Hydroclimate in the Indo-Pacific Warm Pool: Perspectives From Water Isotopes
• Geibert et al. (2021) Glacial episodes of a freshwater Arctic Ocean covered by a thick ice shelf
• Clark et al. (2020) Oceanic forcing of penultimate deglacial and last interglacial sea-level rise
• Friedrich and Timmermann (2020) Using Late Pleistocene sea surface temperature reconstructions to constrain future greenhouse warming
• Glasscock et al. (2020) Changes in Antarctic Bottom Water Formation During Interglacial Periods
• Ai et al. (2020) Southern Ocean upwelling, Earth’s obliquity, and glacial-interglacial atmospheric CO2 change
• de la Vega et al. (2020) Atmospheric CO2 during the Mid-Piacenzian Warm Period and the M2 glaciation
• White and Ravelo (2020) The Benthic B/Ca Record at Site 806: New Constraints on the Temperature of the West Pacific Warm Pool and the “El Padre” State in the Pliocene
• Abell et al. (2021) Poleward and weakened westerlies during Pliocene warmth
• Tauxe and Feakins (2020) A Reassessment of the Chronostratigraphy of Late Miocene C3–C4 Transitions
• Reichgelt et al. (2020) Elevated CO2, increased leaf-level productivity, and water-use efficiency during the early Miocene
• Modestou et al. (2020) Warm Middle Miocene Indian Ocean Bottom Water Temperatures: Comparison of Clumped Isotope and Mg/Ca-Based Estimates
• Steinthorsdottir et al. (2021) The Miocene: the Future of the Past
• Rugenstein et al. (2019) Neogene cooling driven by land surface reactivity rather than increased weathering fluxes
• O'Brien et al. (2020) The enigma of Oligocene climate and global surface temperature evolution
• Paytan et al. (2021) A 35-million-year record of seawater stable Sr isotopes reveals a fluctuating global carbon cycle
• Anagnostou et al. (2020) Proxy evidence for state-dependence of climate sensitivity in the Eocene greenhouse
• Zhu et al. (2019) Simulation of Eocene extreme warmth and high climate sensitivity through cloud feedbacks
• Inglis et al. (2020) Global mean surface temperature and climate sensitivity of the early Eocene Climatic Optimum (EECO), Paleocene–Eocene Thermal Maximum (PETM), and latest Paleocene
• Miller et al. (2020) Cenozoic sea-level and cryospheric evolution from deep-sea geochemical and continental margin records
• Hull et al. (2020) On impact and volcanism across the Cretaceous-Paleogene boundary