선택한 단어 수는 입니다.
최소 단어 이상 선택하여야 합니다.
최소 단어 이상 선택하여야 합니다.
선택한 단어 수는 30입니다.
최대 10 단어까지만 선택 가능합니다.
최대 10 단어까지만 선택 가능합니다.
제안 방법
- Using the influx data provided by Lee and Chao(2003) as a reference for input data, the amount of inflow and outflow was set as 3sv for the Taiwan Warm Currents and as 24sv for Kuroshio warm currents, in order to make the calculation more convenient. Also, because the target sea area was a typical monsoon area influenced by northwesterly winds during winter and southeasterly winds during summer, the data from January to December of 2008 was entered in monthly time-series using variable wind system(Wxt , Wyt) 「NIMR/KMA WIND WAVES 2008 DB」, which changes according to time and space. The direction of the wind was altered as east-west and north-south components before being entered.
- 075℃ every year. Because it was difficult to verify the average seawater circulation over a long period of time that exceeds the tide cycle in such a wide area, the verification was carried out carefully using data from previous studies instead (fig. 2). As a result the simulation of Kuroshio, Taiwan Warm Currents and other nearby sea currents in the East China Sea was quite successful.
- Concentrating on Kuroshio and Taiwan Warn Currents found in the Yellow Sea and East China Sea during summer, this study simulated the seawater circulation while taking into account the variable wind system and influx load of fresh water, and evaluated the changes in Chlorophylla caused by the rise in sea surface temperature. Since a quantitative verification was difficult due to time and spatial restrictions, the movement of seawater was simulated and the trace of ARGO was meticulously verified, which resulted in a realistic calculation of the currents.
- For winds, the time series data spanning one year regarding changing locations was entered using the 「NIMR/KMA WIND WAVES 2008 DB」. In order to take the sea currents into account, a simulation was carried out in which the load volumes(3sv, 24sv(1vs=106 m3/s)) of the Taiwan currents and Kuroshio at the southern and eastern open boundaries were entered. For Kuroshio this was repeated a few more times by adjusting the load volume according to the depth of water at each open boundary.
- Meanwhile, focusing on the currents, wind fields and the inflow of fresh water at the same time, in the test the water temperature was changed in the following 4 stages: 1 year later, 2 years later, 5 years later, 10 years later. The results derived from the hydrodynamics in summer were entered as the basic flow field of the ecosystem model.
- Concentrating on Kuroshio and Taiwan Warn Currents found in the Yellow Sea and East China Sea during summer, this study simulated the seawater circulation while taking into account the variable wind system and influx load of fresh water, and evaluated the changes in Chlorophylla caused by the rise in sea surface temperature. Since a quantitative verification was difficult due to time and spatial restrictions, the movement of seawater was simulated and the trace of ARGO was meticulously verified, which resulted in a realistic calculation of the currents. Also, when the distribution of Chlorophyll-a concentration detected during summertime was simulated using the Ecosystem model, the results were quite similar to the average Chlorophyll-a distribution pattern detected by satellites in July from 2007 to 2009.
- Therefore, focusing on the Yellow Sea, this study aims to provide basic data that can be used to come up with countermeasures against changes in the ocean environment caused by climate changes, by predicting the impacts of the rise in sea surface temperature on the ocean environment and ecosystem using the ecosystem model.
이론/모형
- In the study the eco-hydrodynamic model was used for the simulation of Yellow Sea’s tides, water temperature and other factors related to the ecosystem (Kremer & Nixon, 1978; Nakata et al., 1983).
- The ocean density ρ was calculated using the Knudsen equation.
- , 1983). This model is made up of multi-level hydrodynamic model (COSMOS), used for the sea water flow simulation, and the ecological model (EUTRP 2), used for the water quality simulation.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.