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Brand new hemispheric compare off exotic SST, ?SST, possess a maximum property value 2

Brand new hemispheric compare off exotic SST, ?SST, possess a maximum property value 2

The value of AHTEQ varies from 2.1 PW northward in February to 2.3 PW southward in August with an annual average of 0.1 PW southward. The vast majority (over 99%) of the seasonal variations in cross-equatorial atmospheric heat transport are associated with the zonal and time averaged meridional overturning circulation at the equator (i.e., the Hadley cell), which reverses seasonally (Dima and Wallace 2003). The seasonal variations in cross-equatorial heat transport associated with the stationary and transient eddies are two orders of magnitude smaller in magnitude (not shown). 7 K in September and a minimum of ?0.9 K in March; it lags the insolation by approximately 3 months and lags both PCent and AHTEQ by approximately one month. The annual average ?SST value is 0.9 K, which corresponds with the maximum tropical SSTs being located north of the equator in the annual average.

The brand new seasonal duration of your interhemispheric compare on the atmospheric times fluxes are shown from inside the Fig

The seasonal variations in PPenny and AHTEQ are strongly anticorrelated (as anticipated from Fig. 1) with an R 2 value of 0.99 and a slope of ?2.7 ± 0.6° PW ?1 . This result suggests that seasonal migrations in both PPenny and AHTEQ primarily reflect the seasonal migration of the Hadley cell. This interpretation is also supported by analysis of the seasonal migration of the overturning streamfunction and the partitioning of AHTEQ into latent, sensible, and potential components (not shown); the total AHTEQ is always of the same sign as the potential energy heat transport and is opposed by the sensible and latent heat transport as would be expected from a thermally direct circulation in a stably stratified column with moisture and temperature decreasing with height.Leggi tutto »Brand new hemispheric compare off exotic SST, ?SST, possess a maximum property value 2