We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK


97% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Indirect long-term global radiative cooling fro...
View graph of relations

« Back

Indirect long-term global radiative cooling from NOx emissions

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>1/05/2001
<mark>Journal</mark>Geophysical Research Letters
Number of pages4
<mark>Original language</mark>English


Anthropogenic emissions of short‐lived, chemically reactive gases, such as NO x and CO, are known to influence climate by altering the chemistry of the global troposphere and thereby the abundance of the greenhouse gases O3, CH4 and the HFCs. This study uses the characteristics of the natural modes of the tropospheric chemical system to decompose the greenhouse effect of NO x and CO emissions into (i) short‐lived modes involving predominantly tropospheric O3 and (ii) the long‐lived mode involving a global coupled CH4‐CO‐O3 perturbation. Combining these two classes of greenhouse perturbations—large, short‐lived, regional O3 increases and smaller, long‐lived, global decreases in CH4 and O3—we find that most types of anthropogenic NO x emissions lead to a negative radiative forcing and an overall cooling of the earth.

Bibliographic note

©2009. American Geophysical Union. All Rights Reserved.