Presented By: Climate and Space Sciences and Engineering
Constraints on Marine Cloud Feedback from Satellite Observations
Dr. Timothy Myers
Research Scientist in the Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado, Boulder, Dr. Timothy Myers will give a lecture in person on Thursday, April 7, 2022. Please join us!
Dr. Myers' presentation is titled: "Constraints on Marine Cloud Feedback from Satellite Observations" Please join us in the CSRB Auditorium, Room 2246 at 3:30 EST.
Viewing will also be available using this link:
https://umich.zoom.us/j/96018333630?pwd=TllleEZPQ094TVlJaVNJSzBCN2IvZz09
PassCode:430350
Abstract:
Historically, the response of clouds to planetary warming has been among the most uncertain of all climate feedbacks. Recent advances in observational methods have substantially reduced this uncertainty. These advances stem from the framework of cloud-controlling factor analysis, which posits that large-scale meteorological conditions set the boundary conditions to which clouds respond.
In this seminar, I highlight recent studies that use satellite observations to estimate the sensitivity of low clouds to meteorological perturbations, and that exploit model simulations of meteorological changes under greenhouse warming, to predict cloud feedbacks over the global oceans. These studies suggest a moderate global cloud feedback and climate sensitivity. I will conclude with observational evidence that low clouds have exerted negative feedback to planetary warming over the last four decades, which is opposite to the positive feedback expected from greenhouse warming. This indicates that the processes responsible for marine low cloud changes since ~1980 are distinct from those associated with a long-term increase in carbon dioxide alone.
Dr. Myers' presentation is titled: "Constraints on Marine Cloud Feedback from Satellite Observations" Please join us in the CSRB Auditorium, Room 2246 at 3:30 EST.
Viewing will also be available using this link:
https://umich.zoom.us/j/96018333630?pwd=TllleEZPQ094TVlJaVNJSzBCN2IvZz09
PassCode:430350
Abstract:
Historically, the response of clouds to planetary warming has been among the most uncertain of all climate feedbacks. Recent advances in observational methods have substantially reduced this uncertainty. These advances stem from the framework of cloud-controlling factor analysis, which posits that large-scale meteorological conditions set the boundary conditions to which clouds respond.
In this seminar, I highlight recent studies that use satellite observations to estimate the sensitivity of low clouds to meteorological perturbations, and that exploit model simulations of meteorological changes under greenhouse warming, to predict cloud feedbacks over the global oceans. These studies suggest a moderate global cloud feedback and climate sensitivity. I will conclude with observational evidence that low clouds have exerted negative feedback to planetary warming over the last four decades, which is opposite to the positive feedback expected from greenhouse warming. This indicates that the processes responsible for marine low cloud changes since ~1980 are distinct from those associated with a long-term increase in carbon dioxide alone.
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