edu.ucar.opensky::articles:23384 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T15:09:34.550089 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7ww7mxc https://doi.org/10.5065/D6RX99HX https Related Service #1 Cheyenne: SGI ICE XA Cluster Investigating the role of cloud-radiation interactions in subseasonal tropical disturbances 2020-05-16T00:00:00Z publication https://n2t.org/ark:/85065/d7ww7mxc https://doi.org/10.1029/2019GL086817 Benedict, Jim author Medeiros, Brian author Clement, A. C. author Olson, Jerry G. author UCAR/NCAR - Library publisher Cloud locking, a method that prescribes cloud properties for radiative tendency calculations, is traditionally used to explore climate feedbacks, but here is applied novelly to investigate cloud-radiation interaction (CRI) impacts on subseasonal tropical variability. The approach minimizes mean state differences between control (CRI active) and experimental simulations (CRI disabled) of the Community Earth System Model. Disabling CRI weakens amplitudes of the Madden-Julian oscillation (MJO) by 10-35% and equatorial Rossby waves by 10-30% yet strengthens Kelvin waves by 10-40%. MJO weakening results from suppressed radiation-convection positive feedbacks and increased gross moist stability. Kelvin waves strengthen from reduced convective inhibition and reduced radiative damping on temperature variance. The results are compared to a recently proposed theory that describes a continuum of tropical disturbances. MJO survival, when its primary maintenance mechanism (CRI) is eliminated, stresses the importance of advection and surface flux processes. 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 2020 American Geophysical Union. None eng geoscientificInformation