CARBON - Increasing human interference
- Created by: aliceoliviaaa
- Created on: 07-05-18 10:22
View mindmap
- Increasing Human Interference
- The Greenhouse Effect
- Greenhouse gases; H2O, CO2, CH4, NO, O3. These absorb and emit solar radiation.
- The climate is driven by incoming short-wave solar radiation-
- 31% reflected back into space by clouds, GHG's and land surface (Albedo)
- 69% is absorbed by the earth's surface, especially oceans.
- most of this heat is re-radiated as long-wave radiation
- a lot of this long-wave radiation is prevented from returning back to place by clouds and GHG's.
- This trapped radiation is redirected back to the earths surface
- a lot of this long-wave radiation is prevented from returning back to place by clouds and GHG's.
- most of this heat is re-radiated as long-wave radiation
- 69% is absorbed by the earth's surface, especially oceans.
- 31% reflected back into space by clouds, GHG's and land surface (Albedo)
- Maintaining a balanced carbon cycle
- Photo-synthesis
- this keeps CO2 levels relatively constant and thereby help regulate the earth's mean temperature.
- Net Primary Productivity is the amount of organic matter available for harvesting or consumption.This is the highest in the warmest parts of the world (less in tundra and boreal forests
- Soil Health
- depends on the amount of organic carbon stored in soil. This is determined by balance between inputs (remains and nutrients) and outputs (uptake by plants, and erosion).
- organic carbon is concentrated in the outer layer of the soil. a large surface reservoir of available nutrients, meaning the productivity of ecosystems is conditioned.
- This is why soil surface erosion has such a dramatic impact.
- Photo-synthesis
- Fossil fuel combustion
- Half the extra emissions of CO2 has remained in the atmosphere since 1750. rest is stored in oceans and ecosystems and soils via fluxes.
- Fluxes have sped up due to the extra CO2 in the atmosphere, which is the cause of climate changes:
- rise in mean global temperature
- more precipitation and evaporation
- sudden shifts in weather patterns
- more extreme weather events (floods, storm surges and droughts)
- some areas are becoming warmer and drier- others, cooler and wetter.
- Secondary effects of climate change include:
- rising sea level due to melting glaciers and ice sheets - leasing to threat of flooding on coastal cities.
- decline in biodiversity and goods and services by ecosystems. marine organisms threatened by lower oxygen levels and bleaching of corals.
- more moisture travels around the hydrological cycle as a result of rising temperatures and evaporation.
- The Greenhouse Effect
Comments
No comments have yet been made