Tiny critters, huge impacts: Ocean microbes, climate, and health
jeudi 10 nov 2022
20e Colloque Wright pour la science
1Le thermostat naturel de la planète et son délicat équilibre / How rock...
01:31:49
2Le thermostat naturel de la planète et son délicat équilibre01:31:45
3How rock weathering sets Earth’s thermostat01:31:48
4Les volcans et la gestion des risques / Volcanoes, their eruption and risk...01:32:01
5Les volcans et la gestion des risques01:32:04
6Volcanoes, their eruption and risk management01:31:59
7La turbulence des océans révélée par de nouvelles techniques d’observation /...01:27:57
8La turbulence des océans révélée par de nouvelles techniques d’observation 01:27:57
9The turbulent ocean: technological frontiers, new paradigms, and the emerging Arctic...01:27:57
10Les liens entre les microbes océaniques, le climat et la santé / Tiny critters,...01:26:56
11Les liens entre les microbes océaniques, le climat et la santé01:26:55
12Tiny critters, huge impacts: Ocean microbes, climate, and health 01:26:56
13Questionnements sur l’origine de la vie / How can we know anything about the...01:37:34
14Questionnements sur l’origine de la vie 01:37:34
15 How can we know anything about the origin of life? 01:37:35
It is critical to improve our understanding of the impacts of the ocean/atmosphere system on climate as Earth undergoes unprecedented change. Current models are limited in their treatment of marine aerosols, atmospheric chemistry, and clouds. A particularly challenging area involves determining the impact of ocean microbial emissions on the atmosphere. The ability to determine the impact of ocean biology on clouds and climate in field studies has been impaired by the additional complexities from added human pollution, even out over the open ocean. This lecture will provide an overview of unique ocean/atmosphere-in-the laboratory studies in the NSF Center for Aerosol Impacts on Chemistry of the Environment (CAICE; https://caice.ucsd.edu) designed to unravel the composition of the marine atmosphere with a major focus on the factors controlling the chemical mixing state, cloud formation, and ice nucleating ability of marine aerosols. Over the past decade, CAICE scientists have been able to successfully transfer the full physical, chemical, and biological complexity of the ocean/atmosphere system into the laboratory at Scripps Institution of Oceanography. This presentation will highlight results obtained using this unique approach and how they are now being used to explain marine field observations and improve climate models. This lecture will describe how CAICE studies have been able to finally account for changes in clouds in regions with phytoplankton blooms. This lecture will also discuss the new Scripps Ocean-Atmosphere Research Simulator (SOARS) that will use winds and waves to simulate the complex marine atmosphere boundary layer under varying scenarios of temperature, from tropical to polar, atmospheric gas phase concentrations, and ocean pH. SOARS will be able to simulate the current and future states of the ocean/atmosphere system thus uniquely capable of simulating Earth’s rapidly changing ocean-atmosphere system. Finally, a discussion will be presented on recent field and laboratory studies investigating the factors controlling the ocean-to-atmosphere transfer of bacteria, viruses, and gases and the implications for the health of residents living in and near coastal regions. These studies are yielding insight into how our atmosphere and climate will change as climate and oceans warm.