open access

https://hdl.handle.net/2115/14756

Air-sea humidity effects on the generation of tropical Atlantic SST anomalies during the ENSO events

英語

2006

American Geophysical Union

Geophysical Research Letters

33(L19702)

After the mature stage of the ENSO events in the boreal winter, SST and latent heat flux anomalies over the tropical Atlantic during the following spring show large amplitude north of the equator but small one south of the equator. The linear decomposition analyses of the latent heat flux anomalies indicate that the contribution from wind speed anomaly shows an equatorial antisymmetric structure with same magnitude but opposite polarity between north and south of the equator, while the contribution from anomalous air-sea humidity difference counters to that from wind speed anomaly south of the equator. These results suggest an important role of anomalous air-sea humidity difference on forming latent heat flux anomaly and significantly modifies the conventional view of wind speed as the dominant effect in ENSO-induced tropical Atlantic SST changes.

学術雑誌論文

Accepted Manuscript

An edited version of this paper was published by AGU; Copyright 2006, American Geophysical Union, GEOPHYSICAL RESEARCH LETTERS,VOL. 33, L19702

0094-8276