Sentences with phrase «biological feedback system»

But we do know that it is just one part of a complex biological feedback system.

Not exact matches

By using supercomputers such as Titan, a large multidisciplinary team of scientists led by Peter Thornton of the US Department of Energy's (DOE's) Oak Ridge National Laboratory (ORNL) had the power required to integrate massive codes that combine physical and biological processes in Earth system with feedbacks from human activity.

In a recent paper in the Journal of Biological Chemistry, Nathan Johnson and colleagues at the University of Wisconsin - Madison write that they found that IRP - 1 activity also could be suppressed by degradation when the iron - sulfur cluster biogenesis system was disabled, and that there were regulatory feedbacks between the protein degradation and iron - sulfur cluster mechanisms.

I am curious as to what additional slower «earth - system» feedbacks might be indicated by the release of the methane... i.e. what kind of biological changes might occur to arctic regions by the melting of permafrost and release of methane that will add a longer - term feedback response that needs to accounted for before any sort of new equalibrium would be reached.

The idea that the earth system has feedbacks that potentially benefit and are influenced by biological systems is fine.

It is also increasingly clear that interaction between physical, chemical, and biological components are critical not only for understanding climate impacts but also for understanding feedbacks in the system.

• biological aerosol seeding of clouds (phytoplankton and forests releasing isoprenes, Lovelock, Makarieva / Gorshkov), • and the «biotic pump hypothesis» (Makarieva / Gorshkov) •... among others... In addition, AGW - theory advocates systematically downplay the number and contribution of damping / stabilizing (or «negative») feedbacks (both of heat and CO2) in the global climate system — most implicated directly or indirectly with the activities of life, as illustrated in point # 3.

James Hurrell and colleagues in an article in the Bulletin of the American Meteorological Society stated that the «global coupled atmosphere — ocean — land — cryosphere system exhibits a wide range of physical and dynamical phenomena with associated physical, biological, and chemical feedbacks that collectively result in a continuum of temporal and spatial variability.

A CO2 pulse in the atmosphere will take centuries to finally return to original levels, and that is completely ignoring any potential feedbacks from other parts of the system (ie temperatures raised for centuries could result in massve methane releases and loss of signficant low albedo ice sheets etc.) The experiments I am aware of that show improved plant growth in elevated CO2 levels require that all additional biological needs are amply provided for.

T he global coupled atmosphere — ocean — land — cryosphere system exhibits a wide range of physical and dynamical phenomena with associated physical, biological, and chemical feedbacks that collectively result in a continuum of temporal and spatial variability.

Climate model - A numerical representation of the climate system based on the physical, chemical and biological properties of its components, their interactions and feedback processes, and accounting for all or some of its known properties.

While biological systems, which may have positive feedback between various subsystems (with on / off switches to bound the response), are often control systems, energy - conserving natural systems don't operate that way.

Imagine an economic vision where we incorporate a whole systems perspective, adequate physical and biological contexts (i.e. planetary carrying capacity considerations), accurate feedback systems (wherein pollution costs are factored into the price of goods and services) thus better representing the actual (or true) costs of our activities.

Such issues are of particular significance for studies of climate impacts, which may, for example, represent linkages between physical and social science, as well as feedbacks among physical, chemical and biological systems.

Topics that I work on or plan to work in the future include studies of: + missing aerosol species and sources, such as the primary oceanic aerosols and their importance on the remote marine atmosphere, the in - cloud and aerosol water aqueous formation of organic aerosols that can lead to brown carbon formation, the primary terrestrial biological particles, and the organic nitrogen + missing aerosol parameterizations, such as the effect of aerosol mixing on cloud condensation nuclei and aerosol absorption, the semi-volatility of primary organic aerosols, the importance of in - canopy processes on natural terrestrial aerosol and aerosol precursor sources, and the mineral dust iron solubility and bioavailability + the change of aerosol burden and its spatiotemporal distribution, especially with regard to its role and importance on gas - phase chemistry via photolysis rates changes and heterogeneous reactions in the atmosphere, as well as their effect on key gas - phase species like ozone + the physical and optical properties of aerosols, which affect aerosol transport, lifetime, and light scattering and absorption, with the latter being very sensitive to the vertical distribution of absorbing aerosols + aerosol - cloud interactions, which include cloud activation, the aerosol indirect effect and the impact of clouds on aerosol removal + changes on climate and feedbacks related with all these topics In order to understand the climate system as a whole, improve the aerosol representation in the GISS ModelE2 and contribute to future IPCC climate change assessments and CMIP activities, I am also interested in understanding the importance of natural and anthropogenic aerosol changes in the atmosphere on the terrestrial biosphere, the ocean and climate.