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首页> 外文会议>OCEANS Conference >Applicability assessment for global standard algorithm of marine primary production in the seas surrounding Taiwan around the Tropic of Cancer in the northwest Pacific
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Applicability assessment for global standard algorithm of marine primary production in the seas surrounding Taiwan around the Tropic of Cancer in the northwest Pacific

机译：西北太平洋北回归线附近台湾海域海洋初级生产全球标准算法的适用性评估

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The Vertically Generalized Production Model (VGPM) is a standard algorithm of satellite-derived primary production which is widely used to study the effect of climate change on marine ecosystem, but whether it can be accurately applied to regional seas remain questionable. Taiwan is an island and its central is located near the Tropic of Cancer (23.5 °N) in the northwest Pacific. The sea surrounding Taiwan is rich in biological resources and biodiversity due to the rugged seabed topography and the fluctuation of three major water masses (Kuroshio, South China Sea and China Coastal Water). In order to study the effect of climate change on marine ecosystem in the sea surrounding Taiwan and assess the applicability of VGPM, seasonal field investigations of primary production were conducted in 2018. Seasonal variation of primary production observed in winter, spring, summer and autumn is between 42-911, 113-456, 124-832, 249-1898 mgC m-2 d-1, respectively. The corresponding sea surface temperature variations were 15.9-25.7, 23.5-28.4, 28.5-30.4 and 21.7-26.5 °C, respectively. Comparing the measured data with the VGPM model results (measured values of sea surface chlorophyll concentration, euphotic zoon depth, day length and light intensity were used in the model), the average relative error of measured and model results are 466±321, 318±252, 4±48 and 98±61 % in winter, spring, summer and autumn, respectively. The high relative error mainly comes from the inaccuracy of the temperature-dependent optimal carbon fixation rate (PoptB), which is the most important factor affecting the accuracy of the model. Our results show that primary production derived from the VGPM model cannot be used for long-term research on climate change in the seas surrounding Taiwan.
机译：垂直广义生产模型（VGPM）是卫星衍生的初级生产的标准算法，已广泛用于研究气候变化对海洋生态系统的影响，但能否将其准确地应用于区域海洋仍存在疑问。台湾是一个岛屿，其中心位于西北太平洋的北回归线（23.5°N）附近。由于崎bed的海床地形和三个主要水域（黑潮，南中国海和中国沿海水域）的波动，台湾周边的海洋拥有丰富的生物资源和生物多样性。为了研究气候变化对台湾海域海洋生态系统的影响并评估VGPM的适用性，于2018年进行了一次生产的季节性实地调查。 42-911、113-456、124-832、249-1898之间 -2 d -1 ， 分别。相应的海表温度变化分别为15.9-25.7、23.5-28.4、28.5-30.4和21.7-26.5°C。将测量的数据与VGPM模型的结果进行比较（在模型中使用海面叶绿素浓度，富营养的动物区深，日长和光强度的测量值），测量和模型结果的平均相对误差为466±321、318±冬季，春季，夏季和秋季分别为252％，4±48％和98±61％。较高的相对误差主要来自与温度相关的最佳碳固定率（P 选择 B ），这是影响模型准确性的最重要因素。我们的结果表明，从VGPM模型获得的初级产量不能用于台湾周边海洋的气候变化的长期研究。

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