Impacts of multi‐timescale circulations on meridional heat transport
نویسندگان
چکیده
Abstract Relative contributions to the zonal mean meridional heat transport by climatological annual mean, variation, synoptic, intra‐seasonal and lower‐frequency motions were examined based on ERA‐Interim reanalysis data for period of 1981–2015. The analysed in this study only includes component related wind temperature. In tropics, circulations dominate long‐term transport, while interaction between temperature seasonal anomalous flow largely contributes variation transport. middle latitudes, transient eddies (mostly synoptic eddies) are roughly equal importance poleward leading maximum around 50°N/S. upper‐ lower‐tropospheric transports appear opposite, with magnitude being greater. preferred at 50°N is attributed low‐level southerly situ. peak latitude mid‐latitude near arises from combined effect strong synoptic‐scale variabilities situ their in‐phase relationship. tropical cyclones (TCs) was estimated applying a statistical relationship TC intensity vertically integrated averaged over core region derived high‐resolution Weather Research Forecasting (WRF) model simulations. For northern hemisphere summer, TCs contribute about 35% total active regions, suggesting that play critical role regional
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ژورنال
عنوان ژورنال: International Journal of Climatology
سال: 2021
ISSN: ['0899-8418', '1097-0088']
DOI: https://doi.org/10.1002/joc.7357