GETM dataset - The major role of riverine outflows in shaping the current and future habitats of Harmful Algal Blooms : the case of the North Sea

GETM experiment data supporting the article : "Duteil, O., Macias, D., Stips, A., & Polimene, L. (2024). The major role of riverine outflows in shaping the current and future habitats of Harmful Algal Blooms : the case of the North Sea. In Environmental Research Communications. IOP Publishing. https://doi.org/10.1088/2515-7620/ad97ab"This study investigates the extension of the potential habitat of Harmful Algal Blooms (HABs) in the North Sea using observational data and model experiments under current and future climate scenarios. We assess the combined effects of temperature, salinity, and nutrient availability, particularly the nitrogen-to-phosphorus ratio, on HABs in the region. Climate change projections indicate a decrease in salinity concomitant with an increase in surface temperature, potentially leading to an offshore extension of HAB habitat. Reducing nitrogen and phosphorus loads in rivers differentially affects dissolved inorganic nitrogen (DIN) and phosphorus (DIP) levels, with DIN being more sensitive to load reduction, thereby constraining HAB habitat extension. Our study underscores the importance of considering both physical and biogeochemical factors in assessing HAB habitat dynamics and the potential impacts of climate change and nutrient reduction measures on HAB expansion in the North Sea. These findings have significant implications for environmental policy and management.

GETM实验数据，用于支持以下文章：
Duteil, O., Macias, D., Stips, A., & Polimene, L. (2024). 《河流径流在塑造有害藻华当前及未来栖息地中的重要作用：以北海为例》（The major role of riverine outflows in shaping the current and future habitats of Harmful Algal Blooms: the case of the North Sea）. 发表于《环境研究通讯》（Environmental Research Communications）. IOP Publishing. https://doi.org/10.1088/2515-7620/ad97ab

本研究利用观测数据及当前与未来气候情景下的模型实验，探究了北海有害藻华（Harmful Algal Blooms, HABs）潜在栖息地的扩展规律。我们评估了温度、盐度及营养盐可利用性（尤其是氮磷比）对该区域HABs的综合影响。气候变化预测表明，盐度下降与表层温度升高同步发生，可能导致HAB栖息地向近海延伸。减少河流中的氮磷负荷会对溶解性无机氮（dissolved inorganic nitrogen, DIN）和溶解性无机磷（dissolved inorganic phosphorus, DIP）水平产生差异化影响——其中DIN对负荷削减更为敏感，进而限制HAB栖息地的扩展。本研究强调，在评估HAB栖息地动态及气候变化与营养盐削减措施对北海HAB扩展的潜在影响时，需兼顾物理与生物地球化学因素。这些发现对环境政策制定与管理实践具有重要指导意义。