TY - JOUR
T1 - Why does reemergence of winter sea surface temperature anomalies not occur in eastern mode water areas?
AU - Sugimoto, Shusaku
AU - Hanawa, Kimio
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2005/8/16
Y1 - 2005/8/16
N2 - In terms of buoyancy flux, winter mixed layer depth, and mode water thickness in summer, we explore the causes why reemergence does not occur in the formation areas of the North Pacific eastern subtropical mode water (NPESTMW) and the North Atlantic Madeira mode water (NAMMW). It is found that as season goes by, the thicknesses of these mode waters become quickly thinner due to vigorous salt-finger type convection throughout the water column in contrast to those of the other mode waters. Correspondingly, mode waters lying under the shallow summer mixed layer quickly lose their water properties. In addition, it is found that in these areas, net buoyancy flux integrated through a year is almost zero, while in the other mode water areas where reemergence occurs, net buoyancy flux is negative (the ocean's loss) to some degree. Based on these facts, we can conclude that the formation areas of NPESTMW and NAMMW are the regions having unfavorable conditions for an occurrence of reemergence.
AB - In terms of buoyancy flux, winter mixed layer depth, and mode water thickness in summer, we explore the causes why reemergence does not occur in the formation areas of the North Pacific eastern subtropical mode water (NPESTMW) and the North Atlantic Madeira mode water (NAMMW). It is found that as season goes by, the thicknesses of these mode waters become quickly thinner due to vigorous salt-finger type convection throughout the water column in contrast to those of the other mode waters. Correspondingly, mode waters lying under the shallow summer mixed layer quickly lose their water properties. In addition, it is found that in these areas, net buoyancy flux integrated through a year is almost zero, while in the other mode water areas where reemergence occurs, net buoyancy flux is negative (the ocean's loss) to some degree. Based on these facts, we can conclude that the formation areas of NPESTMW and NAMMW are the regions having unfavorable conditions for an occurrence of reemergence.
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U2 - 10.1029/2005GL022968
DO - 10.1029/2005GL022968
M3 - Article
AN - SCOPUS:25844434673
VL - 32
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 15
M1 - L15608
ER -