HCFC141b_concentration.jpg


Summary

Description
English: Graph shows the concentration of 1,1-dichloro-1-fluoroethane (HCFC-141b, R-141b, C 2 H 3 Cl 2 F) in earth's atmosphere versus time and latitude. X-axis data interval is monthly. Y-axis concentration is parts per trillion.

Atmospheric samples were gathered within evacuated flasks from 8-12 ground stations distributed over the northern (positive latitudes) and southern hemispheres, then sealed and transported to Boulder Colorado for analysis. Most emissions originate at northern latitudes, and are mixed through the troposphere of both hemispheres after about 1-2 years.

Data sampling and analysis by:
Halocarbons and Other Atmospheric Trace Species Group / Global Monitoring Division / Earth Systems Research Laboratories / United States National Oceanic and Atmospheric Administration

https://www.esrl.noaa.gov/gmd/hats/
Date
Source https://www.esrl.noaa.gov/gmd/hats/gases/HCFC141b.html
Author NOAA

Licensing

Public domain
This image is in the public domain because it contains materials that originally came from the U.S. National Oceanic and Atmospheric Administration , taken or made as part of an employee's official duties.

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Captions

HCFC-141b atmospheric concentration since 1993

此文件中描述的项目

depicts

30 June 2020

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