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RISThe Halting Effect of Baroclinicity in Vortex Merging
Publisher: American Meteorological Society
Abstract: We study the quasigeostrophic merging dynamics of axisymmetric baroclinic vortices to understand how baroclinicity affects merging rates and the development of the nonlinear cascade of enstrophy. The initial vortices are ...
Climate Sensitivity to Changes in Ocean Heat Transport
Publisher: American Meteorological Society
Abstract: sing an atmospheric general circulation model coupled to a slab ocean, the effects of ocean heat transport (OHT) on climate are studied by prescribing OHT from 0 to 2 times the present-day values. In agreement with previous ...
Estimation and Impact of Nonuniform Horizontal Correlation Length Scales for Global Ocean Physical Analyses
Publisher: American Meteorological Society
Abstract: ptimally modeling background-error horizontal correlations is crucial in ocean data assimilation. This paper investigates the impact of releasing the assumption of uniform background-error correlations in a global ocean ...
Implementing a Parallel Version of a Variational Scheme in a Global Assimilation System at Eddy-Resolving Resolution
Publisher: American Meteorological Society
Abstract: Recent advances in global ocean prediction systems are fostered by the needs of accurate representation of mesoscale processes. The day-by-day realistic representation of its variability is hampered by the scarcity of ...
Impact of Orbital Parameters and Greenhouse Gas on the Climate of MIS 7 and MIS 5 Glacial Inceptions
Publisher: American Meteorological Society
Abstract: his work explores the impact of orbital parameters and greenhouse gas concentrations on the climate of marine isotope stage (MIS) 7 glacial inception and compares it to that of MIS 5. The authors use a coupled atmosphere?ocean ...
Assimilating Along-Track Altimetric Observations through Local Hydrostatic Adjustment in a Global Ocean Variational Assimilation System
Publisher: American Meteorological Society
Abstract: A global ocean three-dimensional variational data assimilation system was developed with the aim of assimilating along-track sea level anomaly observations, along with in situ observations from bathythermographs and ...
South Asian Summer Monsoon and the Eastern Mediterranean Climate: The Monsoon–Desert Mechanism in CMIP5 Simulations
Publisher: American Meteorological Society
Abstract: ry summers over the eastern Mediterranean are characterized by strong descent anchored by long Rossby waves, which are forced by diabatic heating associated with summer monsoon rainfall over South Asia. The large-scale ...
Tropical Cyclone Count Forecasting Using a Dynamical Seasonal Prediction System: Sensitivity to Improved Ocean Initialization
Publisher: American Meteorological Society
Abstract: his study investigates the predictability of tropical cyclone (TC) seasonal count anomalies using the Centro Euro-Mediterraneo per i Cambiamenti Climatici?Istituto Nazionale di Geofisica e Vulcanologia (CMCC-INGV) Seasonal ...
Strongly Coupled Data Assimilation Experiments with Linearized Ocean–Atmosphere Balance Relationships
Publisher: American Meteorological Society
Abstract: AbstractCoupled data assimilation is emerging as a target approach for Earth system prediction and reanalysis systems. Coupled data assimilation may be indeed able to minimize unbalanced air?sea initialization and maximize ...
Tropical Cyclone Interaction with the Ocean: The Role of High-Frequency (Subdaily) Coupled Processes
Publisher: American Meteorological Society
Abstract: AbstractThrough tropical cyclone (TC) activity the ocean and the atmosphere exchange a large amount of energy. In this work possible improvements introduced by a higher coupling frequency are tested between the two components ...