Drawdown Emissions

If we do not manage to reduce our emissions rapidly, more and more attention is being given to removing greenhouse gases in the atmosphere by other strategies

Drawdown.org

Drawdown - 60 Minutes with Paul Hawken from esaltzberg

Drawdown maps, measures, models, and describes the 100 most substantive solutions to global warming. For each solution, it describes its history, the carbon impact it provides, the relative cost and savings, the path to adoption, and how it works. The goal of the research that informs Drawdown is to determine if we can reverse the buildup of atmospheric carbon within thirty years. All solutions modeled are already in place, well understood, analyzed based on peer-reviewed science, and are expanding around the world.

They have ranked the top 80 solutions and the total emissions are approximately 1,050 Gigatons of carbon dioxide equivalents. The top solution is managing refrigerants (air-conditioning and refrigerators). Ranked next are onshore wind turbines (off-shore turbines are ranked lower although they also drawdown emissions.)

For example, the following electricity generation options would drawdown a total of 246 Gigatons.

Ranking Electricity Generation

2

Wind Turbines (Onshore)

8

Solar Farms

10

Rooftop Solar

18

Geothermal

20

Nuclear

22

Wind Turbines (Offshore)

25

Concentrated Solar

29

Wave and Tidal

30

Methane Digesters (Large)

34

Biomass

41

Solar Water

48

In-Stream Hydro

50

Cogeneration

64

Methane Digesters (Small)

68

Waste-to-Energy

76

Micro Wind

77

Energy Storage (Distributed)

77

Energy Storage (Utilities)

77

Grid Flexibility

78

Microgrids

 

Carbon Brief

Carbon Brief created the infographic of 10 of the most frequently proposed negative emissions technologies (NETs):

However, some strategies (e.g. albedo modification) reduce warming without reducing the amount of greenhouse gases in the atmosphere and that does nothing to reduce ocean acidification which many see as a greater threat to our wellbeing.