Details:

Journal Title:
Journal of Geophysical Research: Oceans
Personal Author:
Kida, Shinichiro ; Richards, Kelvin J. ; Sasaki, Hideharu
Kida, Shinichiro ; Richards, Kelvin J. ; Sasaki, Hideharu Less -
NOAA Program & Office:
OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office)
OAR (Oceanic and Atmospheric Research) ; CPO (Climate Program Office) Less -
Description:
The Indonesian Seas receive one of the largest amounts of rainfall around the globe. Part of this freshwater disperses to the Indian Ocean through the Indonesian Throughflow (ITF), the Pacific and Indian interocean exchange flow, making the Indonesian Seas a major source of freshwater, and plays an important part of the global hydrological cycle. By using a Lagrangian particle tracking model, we examine the pathways behind the dispersion of freshwater that the Indonesian Seas receive through precipitation. The model suggests that the dispersion from the near-surface water of the Indonesian Seas occurs in about 6 months, primarily through advection to the surrounding seas, followed by evaporation, entrainment, and vertical mixing. The Lombok Strait and the Timor Strait are the major outflowing straits, and the freshwater exiting through these straits are found to originate from limited areas and seasons. The sources for the Lombok Strait outflow are the Java Sea precipitated freshwater during boreal fall and winter, while the sources for the Timor Strait outflow are the Flores-Banda Seas and Arafura Sea precipitated freshwater during winter and spring. Mixing with the thermocline water is found to occur when the monsoonal winds induce upwelling events in winter and summer, along the shelf breaks and steep coastlines surrounding the Flores-Banda Seas. Vertical mixing provides a pathway for the surface freshwater to enter the ITF thermocline, and our model suggests that it is the Java Sea precipitated freshwater during winter that is entering the ITF thermocline along its main pathway.
Keywords:
[+]
Freshwater Hydrological Cycle Lagrangian Model
Source:
Journal of Geophysical Research: Oceans, 124, 3228– 3245
DOI:
https://doi.org/10.1029/2018JC014707
Document Type:
Journal Article
Funding:
Grant no. NA17OAR4310252
Place as Subject:
Indonesia
Rights Information:
Other
Compliance:
Submitted
Main Document Checksum:
[+]
urn:sha256:63197bd87ee01ce52a8435343b574f2026eb14a3d88ed37e430ea209f718cbf2
Download URL:
https://repository.library.noaa.gov/view/noaa/32649/noaa_32649_DS1.pdf
File Type:

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