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RISThe Moist Static Energy Budget of a Composite Tropical Intraseasonal Oscillation in a Climate Model
Publisher: American Meteorological Society
Abstract: The intraseasonal moist static energy (MSE) budget is analyzed in a climate model that produces realistic eastward-propagating tropical intraseasonal wind and precipitation variability. Consistent with the recharge?discharge ...
An Idealized Semi-Empirical Framework for Modeling the Madden–Julian Oscillation
Publisher: American Meteorological Society
Abstract: he authors present a simple semi-empirical model to explore the hypothesis that the Madden?Julian oscillation can be represented as a moisture mode destabilized by surface flux and cloud?radiative feedbacks. The model is ...
Moisture Modes and the Eastward Propagation of the MJO
Publisher: American Meteorological Society
Abstract: he authors discuss modifications to a simple linear model of intraseasonal moisture modes. Wind?evaporation feedbacks were shown in an earlier study to induce westward propagation in an eastward mean low-level flow in this ...
An Intraseasonal Oscillation Composite Life Cycle in the NCAR CCM3.6 with Modified Convection
Publisher: American Meteorological Society
Abstract: The NCAR CCM3.6 with microphysics of clouds with relaxed Arakawa?Schubert convection produces an intraseasonal oscillation that is highly dependent on lower-tropospheric moistening by surface convergence. Model intraseasonal ...
The Role of Surface Fluxes in MJO Propagation through the Maritime Continent
Publisher: American Meteorological Society
Interannual Tropical Pacific Sea Surface Temperatures and Their Relation to Preceding Sea Level Pressures in the NCAR CCSM2
Publisher: American Meteorological Society
Abstract: This paper describes aspects of tropical interannual ocean/atmosphere variability in the NCAR Community Climate System Model Version 2.0 (CCSM2). The CCSM2 tropical Pacific Ocean/atmosphere system exhibits much stronger ...
Dr. Yanai’s Contributions to the Discovery and Science of the MJO
Publisher: American Meteorological Society
Abstract: his chapter reviews Professor Michio Yanai?s contributions to the discovery and science of the Madden?Julian oscillation (MJO). Professor Yanai?s work on equatorial waves played an inspirational role in the MJO discovery ...
On the Convective Coupling and Moisture Organization of East Pacific Easterly Waves
Publisher: American Meteorological Society
Abstract: rocesses associated with the local amplification of easterly waves (EWs) in the east Pacific warm pool are explored. Developing EWs favor convection in the southwest and northeast quadrants of the disturbance. In nascent ...
The Madden–Julian Oscillation, Barotropic Dynamics, and North Pacific Tropical Cyclone Formation. Part I: Observations
Publisher: American Meteorological Society
Abstract: Low-level barotropic dynamics may help to explain the modulation of eastern and western North Pacific tropical cyclones by the Madden?Julian oscillation (MJO) during Northern Hemisphere summer. The MJO is characterized by ...
The Influence of the MJO on Upstream Precursors to African Easterly Waves
Publisher: American Meteorological Society
Abstract: he Madden?Julian oscillation (MJO) produces alternating periods of increased and reduced precipitation and African easterly wave (AEW) activity in West Africa. This study documents the influence of the MJO on the West ...