edu.ucar.opensky::articles:21287 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T02:33:29.669299 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7hq42h3 Hydrological controls on the tropospheric ozone greenhouse gas effect 2017-03-13T00:00:00Z publication https://n2t.org/ark:/85065/d7hq42h3 https://doi.org/10.1525/elementa.208 Kuai, L. author Bowman, K. W. author Worden, Helen M. author Herman, R. L. author Kulawik, S. S. author UCAR/NCAR - Library publisher The influence of the hydrological cycle in the greenhouse gas (GHG) effect of tropospheric ozone (O-3) is quantified in terms of the O-3 longwave radiative effect (LWRE), which is defined as the net reduction of top-of-atmosphere flux due to total tropospheric O-3 absorption. The O-3 LWRE derived from the infrared spectral measurements by Aura's Tropospheric Emission Spectrometer (TES) show that the spatiotemporal variation of LWRE is relevant to relative humidity, surface temperature, and tropospheric O-3 column. The zonally averaged subtropical LWRE is similar to 0.2 W m(-2) higher than the zonally averaged tropical LWRE, generally due to lower water vapor concentrations and less cloud coverage at the downward branch of the Hadley cell in the subtropics. The largest values of O-3 LWRE over the Middle East (> 1 W/m(2)) are further due to large thermal contrasts and tropospheric ozone enhancements from atmospheric circulation and pollution. Conversely, the low O-3 LWRE over the Inter-Tropical Convergence Zone (on average 0.4 W m(-2)) is due to strong water vapor absorption and cloudiness, both of which reduce the tropospheric O-3 absorption in the longwave radiation. These results show that changes in the hydrological cycle due to climate change could affect the magnitude and distribution of ozone radiative forcing. 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 author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation