Dong Shan Ko
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Dong Shan Ko has a total of 8 co-authors. Here are the top co-authors by number of shared publications:
- Chun-Chi Lien
Department of Atmospheric Sciences, National Taiwan University, Taipei, Taiwan
1 shared publication - Hsiao-Ching Huang
Department of Atmospheric Sciences, National Taiwan University, Taipei 10617, Taiwan
1 shared publication - Iam-Fei Pun
Graduate Institute of Hydrological and Oceanic Sciences, National Central University, Taoyuan, Taiwan
1 shared publication - Iris I. Lin
Department of Atmospheric Sciences National Taiwan University Taipei Taiwan
1 shared publication - James F. Price
Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
1 shared publication - Johnny Chung Leung Chan
Shanghai Typhoon Institute China Meteorological Administration Shanghai China
1 shared publication
Latest Publications
- Open Access
- 6 July 2019
- Published by MDPI AG in Sustainability
- Vol. 11 (13) , 3709
Rapid Intensification of Typhoon Hato (2017) over Shallow Water
On 23 August, 2017, Typhoon Hato rapidly intensified by 10 kt within 3 h just prior to landfall in the city of Macau along the South China coast. Hato’s surface winds in excess of 50 m s−1 devastated the city, causing unprecedented damage and social impact. This study reveals that anomalously warm ocean conditions in the nearshore shallow water (depth < 30 m) likely played a key role in Hato’s fast intensification. In particular, cooling of the sea surface temperature (SST) generated by Hato at the critical landfall point was estimated to be only 0.1–0.5 °C. The results from both a simple ocean mixing scheme and full dynamical ocean model indicate that SST cooling was minimized in the shallow coastal waters due to a lack of cool water at depth. Given the nearly invariant SST in the coastal waters, we estimate a large amount of heat flux, i.e., 1.9k W m−2, during the landfall period. Experiments indicate that in the absence of shallow bathymetry, and thus, if nominal cool water had been available for vertical mixing, the SST cooling would have been enhanced from 0.1 °C to 1.4 °C, and sea to air heat flux reduced by about a quarter. Numerical simulations with an atmospheric model suggest that the intensity of Hato was very sensitive to air-sea heat flux in the coastal region, indicating the critical importance of coastal ocean hydrography.
- 6 July 2019
- Published by MDPI AG in Sustainability
- Vol. 11 (13) , 3709
Open AccessRapid Intensification of Typhoon Hato (2017) over Shallow Water
On 23 August, 2017, Typhoon Hato rapidly intensified by 10 kt within 3 h just prior to landfall in the city of Macau along the South China coast. Hato’s surface winds in excess of 50 m s−1 devastated the city, causing unprecedented damage and social impact. This study reveals that anomalously warm ocean conditions in the nearshore shallow water (depth < 30 m) likely played a key role in Hato’s fast intensification. In particular, cooling of the sea surface temperature (SST) generated by Hato at the critical landfall point was estimated to be only 0.1–0.5 °C. The results from both a simple ocean mixing scheme and full dynamical ocean model indicate that SST cooling was minimized in the shallow coastal waters due to a lack of cool water at depth. Given the nearly invariant SST in the coastal waters, we estimate a large amount of heat flux, i.e., 1.9k W m−2, during the landfall period. Experiments indicate that in the absence of shallow bathymetry, and thus, if nominal cool water had been available for vertical mixing, the SST cooling would have been enhanced from 0.1 °C to 1.4 °C, and sea to air heat flux reduced by about a quarter. Numerical simulations with an atmospheric model suggest that the intensity of Hato was very sensitive to air-sea heat flux in the coastal region, indicating the critical importance of coastal ocean hydrography.