1) Design operates Music dating review put
1 (Delworth et al. 2006) presenting a limited-frequency dynamical center (Lin 2004) which have a lateral quality around dos° latitude and you will twenty-four vertical accounts. The newest atmospheric model are coupled to help you an effective slab sea which have spatially consistent breadth. Four dress people having given water deepness regarding dos.cuatro, 6, several, twenty four, and fifty meters is examined inside data. The design was pressed by the seasonally differing insolation having zero eccentricity and you can ° obliquity, which is work on having twenty years, adequate to converge toward a constant climatology. The fresh new model climatology try taken from the final 5 years out of brand new integrations.
2) Overall performance
The seasonal migration of the ITCZ off the equator has a larger amplitude for shallower ocean depths (Fig. 8) and PPenny reaches as far as 21° in the 2.4-m slab depth run as compared to 3° in the 50-m slab depth run. This behavior is expected because the adjustment time scale of a 50-m-deep ocean to solar heating is on the order of one year (Donohoe 2011) as compared to weeks for 2.4-m-deep ocean. Thus, the SSTs barely adjust to the seasonally varying insolation in the 50-m run while the maximum SST moves seasonally with the insolation in the 2.4-m run.
(top) Regular a number of rain centroid and you may atmospheric temperature transport along side equator on slab ocean aquaplanet simulations with every simulator (water depth) offered by another type of color. The fresh seasonal range are twice new amplitude of the annual harmonic of any variable and also the mountain of one’s line is the regression coefficient of one’s month-to-month analysis. The brand new black colored asterisks could be the monthly findings and the good black colored line is the regular variety of the fresh new findings. (bottom) As within better, but also for precipitation centroid and warm SST gradient.
(top) Seasonal directory of precipitation centroid and you can atmospheric heat transport along side equator from the slab water aquaplanet simulations with each simulation (ocean breadth) given by a separate colour. The new seasonal range is twice this new amplitude of the annual harmonic of every adjustable plus the hill of the line is the regression coefficient of month-to-month studies. The new black asterisks will be the monthly findings plus the good black colored line is the seasonal set of the newest observations. (bottom) Just like the at better, but also for rain centroid and you may exotic SST gradient.
(top) Seasonal a number of precipitation centroid and atmospheric temperature transportation along side equator throughout the slab sea aquaplanet simulations with each simulation (sea breadth) given by a unique colour. New seasonal diversity are double the newest amplitude of annual harmonic each and every varying and also the hill of line ‘s the regression coefficient of your monthly investigation. This new black asterisks are definitely the monthly findings and the strong black colored range ‘s the seasonal selection of new findings. (bottom) While the at greatest, however for rain centroid and you can warm SST gradient.
The seasonal amplitude of AHTEQ also decreases with increasing ocean depth, from 11.6 PW in the 2.4-m run to 0.5 PW in the 50-m run. In the shallow ocean run, the SSTs respond rapidly to the seasonally varying insolation, heating up over the summer hemisphere and subsequently fluxing energy upward (via turbulent and longwave fluxes) to the adjacent atmosphere to drive seasonal variations in AHTEQ; in the 2.4-m run ?SHF? is nearly in phase with the insolation (11-day lag) and has a seasonal amplitude of 11.6 PW. In contrast, the solar heating of the ocean makes a minimal impact on ocean temperatures in the deep ocean runs due to the large heat capacity of the ocean. In fact, SWABS is the only source of seasonal atmospheric heating in the 50-m run and the atmosphere loses energy to the ocean during the warm season; in the 50-m run ?SHF? is nearly antiphased with the insolation (192-day lag) and has a seasonal amplitude of 3.7 PW.