edu.ucar.opensky::articles:24007 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T15:21:43.864429 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7n87f4m Increasing water vapor in the stratosphere and mesosphere after 2002 2019-11-28T00:00:00Z publication https://n2t.org/ark:/85065/d7n87f4m https://doi.org/10.1029/2019GL084973 Yue, J. author Russell, J. author Gan, Q. author Wang, T. author Rong, P. author García, Rolando R. author Mlynczak, M. author UCAR/NCAR - Library publisher Water vapor (H2O) measurements made by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument between 2002 and 2018 and by the Aura Microwave Limb Sounder (MLS) instrument between 2004 and 2018 are analyzed to determine the linear trend and solar cycle response of H2O in the stratosphere and mesosphere. Both SABER and MLS show a rapid global H2O increase of 5-6% per decade in the lower stratosphere after the 2001 drop. The increasing zonal mean H2O at 40 degrees N in SABER and MLS is consistent with the Boulder frost point hygrometer data in the lower stratosphere. The global distribution of SABER and MLS H2O trends are positive at most altitudes and latitudes, and they peak in the tropical lower stratosphere. In the mesosphere the SABER H2O trend is 0.1-0.2 ppmv per decade and the MLS H2O trend is 0.2-0.3 ppmv per decade. The trend and solar cycle response derived from the observations are compared against the Whole Atmosphere Community Climate Model (WACCM). The solar cycle response of H2O from WACCM agrees with SABER and MLS. The linear H2O trend from WACCM does not show the observed increase in the lower stratosphere. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2019 American Geophysical Union. None eng geoscientificInformation