World Atmosphere - Nitrous Oxide Levels



Environment - World Atmosphere - Nitrous Oxide Levels (from NOAA)

Nitrous Oxide is the number three greenhouse gas in the atmosphere in terms of effect (quantity x potency)

Annual Nitrous Oxide levels (parts per billion)

NOLevels
Global Nitrous Oxide Levels by Month
Chart obtained from the NOAA Earth System Research Laboratory http://www.esrl.noaa.gov/gmd/hats/combined/N2O.html
Chart updated here each year, usually in late January

 

Zoom out 800,000 years and you get this:
N20_800K_years
Chart obtained from United States Environmental Protection Agency - the link no longer works


Analysis

Since the levels of Nitrous Oxide have been monitored starting in the late 1970's, the data shows a relentless mostly linear increase.

While the trend is up, the rate of increase is far less than CO2 and there is no huge stockpile of stored Nitrous Oxide to be unleashed if the trend continues, the way there is with Methane.

According to the EPA (http://epa.gov/climatechange/ghgemissions/gases/n2o.html) the sources of Nitrous Oxide emissions in the United States are:
75% - Agricultural Soil Management
6% - Industry or Chemical Production
5% - Stationary Combustion
5% - Other
5% - Manure Management
4% - Transportation

January 22, 2018: The chart produced by NOAA in January 2018 has been posted - The gradual increase continues at about the same linear rate since the late 1970's.