Abstract
The Atmospheric Chemistry Experiment (ACE) Fourier transform spectrometer (FTS) has been measuring water vapor and methane in the stratosphere and mesosphere from low Earth orbit since 2004. Recently, substantial increases in water vapor in the upper atmosphere were observed with the MLS and SABER satellite instruments. The main source of water vapor in the upper atmosphere is methane oxidation. ACE-FTS data show substantial water and methane increases, and confirm that the methane increases are too small to explain the water increases. Therefore, changes in the transport of water across the tropical tropopause layer and in atmospheric dynamics are responsible for the positive water trends.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Quantitative Spectroscopy and Radiative Transfer
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
