The Human Impacts Database

A collection of useful numbers for quantifying the impacts of the human presence on Earth.

This quantity comes from a time series measurement and the most recent value (2021) is reported.


Value:		≈ 334 parts per billion see this value in other units This is equivalent to... ≈ 0.33 parts per million ≈ 3.34 × 10^-7 mol N₂O mol^-1 air
HuID:		25529
Relevant Year(s):		2021
Summary:		Globally-averaged, monthly mean atmospheric nitrous oxide (N₂O) concentrations determined from a globally distributed network of air sampling sites from 2001-Present.
Method:		The Global Monitoring Division of NOAA’s Earth System Research Laboratory has measured nitrous oxide since 1997 at a globally distributed network of air sampling sites. A global average is constructed by first smoothing the data for each site as a function of time, and then smoothed values for each site are fitted as a function of latitude at 48 equally-spaced time steps per year. Global means are calculated from the latitude fits at each time step. The 95% confidence interval is the uncertainty presented in the time series.
Source:		NOAA ESRL Global Monitoring Laboratory Trends in Nitrous Oxide. (2021)
Dataset:		Globally-averaged, monthly mean atmospheric N2O concentrations (monthly_global_n2o_data_processed.csv) global resolution
Trend:
Original Data License:		NOAA Public Domain Share Alike
Added By:		ilopezgo