Increased levels of SRP associated with organic matter (POC), which stemmed from reduced DIN:SRP ratios, contributed to increased Cyanoprokaryota and picophytoplankton C concentrations, which created a positive feedback loop. However, a simultaneous reduction in the total N:P ratio could have ...
We are on track to reach 1000ppm within a century, but we’ll never get there of our own volition because our civilization will be toast long before then; however, once tipping points in the climate system are breached, positive feedback loops will have been set in motion that will ...
2016; Rezai and van der Ploeg 2016; Gerlagh and Liski 2018), we also allow for a model of carbon dynamics with the positive feedback loop that get unleashed as the capacity of the oceans to absorb carbon diminishes (Millar et al. 2017). Finally, regarding the political drivers of ...
atmospheric energy balance atmospheric energy budget greenhouse effect enhanced greenhouse effect (global warming) global dimming (positive/negative) feedback loop greenhouse gases albedo vulnerability resilience long-wave/short-wave radiation fossil fuel hydrosphere 如果这些概念理解不清晰,knowledge的理解就有困难...
On the magnitude of positive feedback between future climate change and the carbon cycle Dufresne J-L, Friedlingstein P, Berthelot M, Bopp L, Ciais P, Fairhead L, Le Treut H, Monfray P (2002) On the mag- nitude of positive feedback between future climate change and the carbon cycle...
each creating a positive feedback cycle (Nowacki and Abrams2015). This is confounded by evidence that more fire-adapted species can produce a thicker organic layer than more fire sensitive species, causing a positive feedback loop of potentially higher delayed mortality in fire-adapted species due...
Under high greenhouse gas emissions scenarios, there are reductions in moisture convergence, precipitation, and evapotranspiration, primarily due to a positive feedback loop. Conversely, in scenarios of future deforestation, precipitation reductions are even more pronounced, driven by a negative feedback ...
Positive feedback tends to increase the initial change. Imagine a thermostat that turns the furnace on when it gets hot. Water vapor is a powerful greenhouse gas. If we increase the temperature, more water evaporates. This adds more GHG to the atmosphere and traps more heat thus increasing th...
(Fig.4a). This possible increase in fire activity in boreal areas may result in significant peatland combustion and a release of the large quantities of soil carbon that they store into the atmosphere43. These greenhouse gas emissions may create a positive feedback loop, leading to a further ...
A positive feedback loop can emerge that is self-sustaining--no longer requiring independent climate-change drivers. Current research regimes and insect control strategies are insufficient at present to cope with the present regional scale of insect-caused deforestation, let alone its likely future ...