eReefs GBR4 biogeochemistry and sediments v3.1 reduced loads catchment scenario

Results from version 3.1 of the the 4km-resolution biogeochemistry and sediments model of the Great Barrier Reef (GBR4), forced by version2 of the Hydrodynamic model and by a reduced-loads catchment scenario which is derived from SOURCE Catchments with 2019 catchment condition (q3b) with anthropogenic loads (q3b – q3p) reduced according to the percentage reductions of DIN, PN, PP and TSS specified in the Reef 2050 Water Quality Improvement Plan (WQIP) 2017-2022 as calculated in Brodie et al., (2017). Further, the reductions are adjusted to account for the cumulative reductions already achieved between 2014 and 2019 that will be reflected in the 2019 catchment condition used in q3b. This model configuration and associated results dataset may be referred to as "GBR4_H2p0_B3p1_Cq3R_Dhnd" according to the eReefs biogeochemical simulation naming protocol. The model ran in hindcast-mode as one of a suite of simulations which included baseline (GBR4_H2p0_B3p1_Cq3b_Dhnd) and pre-industrial (GBR4_H2p0_B3p1_Cq3p_Dhnd) catchment scenarios.

本数据集源自大堡礁（Great Barrier Reef）4公里分辨率生物地球化学与沉积物模型（GBR4）3.1版本的模拟结果，该模型由2.0版本水动力模型（Hydrodynamic model）驱动，并采用基于SOURCE Catchments模型2019年流域状态（q3b）开发的负荷削减流域情景：其中人为负荷（q3b – q3p）按照《大堡礁2050水质改善计划（Reef 2050 Water Quality Improvement Plan, WQIP）2017-2022》中规定的溶解无机氮（Dissolved Inorganic Nitrogen, DIN）、颗粒态氮（Particulate Nitrogen, PN）、颗粒态磷（Particulate Phosphorus, PP）及总悬浮固体（Total Suspended Solids, TSS）削减比例实施削减，该削减比例由布罗迪等人（Brodie et al., 2017）测算得出。此外，本次模拟的负荷削减量已针对2014至2019年间已实现的累计削减量进行调整，该累计削减成果将体现在q3b所采用的2019年流域状态中。根据eReefs生物地球化学模拟命名规范，该模型配置及配套结果数据集可被称为"GBR4_H2p0_B3p1_Cq3R_Dhnd"。该模型采用后报模式运行，属于包含基准流域情景（"GBR4_H2p0_B3p1_Cq3b_Dhnd"）与前工业化流域情景（"GBR4_H2p0_B3p1_Cq3p_Dhnd"）的系列模拟之一。