Application of the Seasat Altimeter Data for Estimations of Sea Surface Height and Ocean Tide in the Northwest Pacific Ocean

1985 ◽  
pp. 351-356
Author(s):  
K. Sato ◽  
M. Ooe ◽  
T. Teramoto
Keyword(s):  
Pacific Ocean ◽  
Sea Surface Height ◽  
Sea Surface ◽  
Altimeter Data ◽  
Ocean Tide ◽  
Northwest Pacific ◽  
Northwest Pacific Ocean ◽  
The Northwest Pacific Ocean

Habitat suitability modelling revealing environmental-driven abundance variability and geographical distribution shift of winter–spring cohort of neon flying squid Ommastrephes bartramii in the northwest Pacific Ocean

2019 ◽  
Vol 76 (6) ◽  
pp. 1722-1735 ◽  
Author(s):  
Wei Yu ◽  
Xinjun Chen ◽  
Yang Zhang ◽  
Qian Yi
Keyword(s):  
Pacific Ocean ◽  
Habitat Suitability ◽  
Sea Surface ◽  
Height Anomaly ◽  
Northwest Pacific ◽  
Suitable Habitat ◽  
Ommastrephes Bartramii ◽  
Catch Per Unit Effort ◽  
Northwest Pacific Ocean ◽  
The Northwest Pacific Ocean

Abstract To identify climate-related habitat changes and variations in abundance and distribution of Ommastrephes bartramii in the northwest Pacific Ocean, an habitat suitability index (HSI) model was developed in this study including sea surface temperature (SST), photosynthetically active radiation (PAR), and sea surface height anomaly (SSHA). The catch-per-unit-effort (CPUE) of O. bartramii gradually decreased between 2006 and 2015, and the latitudinal gravity centres (LATG) of the fishing effort shifted southward. Correlation analyses suggested that CPUE was positively related to SST, PAR, and the areas of suitable and optimal habitat, but negatively correlated with SSHA and the percentages of poor habitat. A significantly positive correlation was found between the LATG and the average latitude of the most preferred SST, PAR, and the average latitude of the area with an HSI between 0.9 and 1.0. From 2006 to 2015, the annual declined CPUE was highly consistent with the increase in areas of poor habitat and the reduction in areas of suitable and optimal habitats. The south-approaching LATG coincided with the southward migration pattern of the latitude of the HSI area in the range of 0.9–1.0. Moreover, compared to the El Niño events, the La Niña events, and normal climate condition yielded enlarged suitable habitat areas for O. bartramii, and the LATG moved further north.

scholarly journals Estimation of Extreme Significant Wave Height in the Northwest Pacific Using Satellite Altimeter Data Focused on Typhoons (1992–2016)

2021 ◽  
Vol 13 (6) ◽  
pp. 1063
Author(s):  
Hye-Jin Woo ◽  
Kyung-Ae Park
Keyword(s):  
Pacific Ocean ◽  
Wave Height ◽  
Return Period ◽  
Seasonal Variations ◽  
Eastern Coast ◽  
Altimeter Data ◽  
Northwest Pacific ◽  
Satellite Altimeter ◽  
Northwest Pacific Ocean ◽  
The Northwest Pacific Ocean

The estimation of extreme ocean wave heights is important for understanding the ocean’s response to long-term changes in the ocean environment and for the effective coastal management of potential disasters in coastal areas. In order to estimate extreme wave height values in the Northwest Pacific Ocean, a 100-year return period were calculated by applying a Peak over Threshold (PoT) method to satellite altimeter SWH data from 1992 to 2016. Satellite altimeter SWH data were validated using in situ measurements from the Ieodo Ocean Research Station (IORS) south of Korea and the Donghae buoy of the Korea Meteorological Administration (KMA) off the eastern coast of Korea. The spatial distribution and seasonal variations of the estimated 100-year return period SWHs in the Northwest Pacific Ocean were presented. To quantitatively analyze the suitability of the PoT method in the Northwest Pacific, where typhoons frequently occur, the estimated 100-year return period SWHs were compared by classifying the regions as containing negligible or significant typhoon effects. Seasonal variations of extreme SWHs within the upper limit of 0.1% and the PoT-based extreme SWHs indicated the effect of typhoons on the high SWHs in the East China Sea and the southern part of the Northwest Pacific during summer and fall. In addition, this study discusses the limitations of satellite altimeter SWH data in the estimation of 100-year extreme SWHs.

Sign in / Sign up

Export Citation Format

Share Document