Daily and monthly minimum, maximum and range of eReefs hydrodynamic model outputs - temperature, water elevation (AIMS, Source: CSIRO)

This derived dataset contains basic statistical products derived from the eReefs CSIRO hydrodynamic model v2.0 outputs at both 1 km and 4 km resolution and v4.0 at 4 km for both a daily and monthly aggregation period. The statistics generated are daily minimum, maximum, mean and range. For monthly aggregations there are monthly mean of the daily minimum, maximum and range, and the monthly minimum, maximum and range. The dataset only calculates statistics for the temperature and water elevation (eta).These are generated by the AIMS eReefs Platform (https://ereefs.aims.gov.au/). These statistical products are derived from the original hourly model outputs available via the National Computing Infrastructure (NCI) (https://thredds.nci.org.au/thredds/catalogs/fx3/catalog.html). The data is re-gridded from the original curvilinear grid used by the eReefs model into a regular grid so the data files can be easily loaded into standard GIS software. These products are made available via a THREDDS server (https://thredds.ereefs.aims.gov.au/thredds/) in NetCDF format and This data set contains two (2) products, based on the periods over which the statistics are determined: daily, and monthly.Method:Data files are processed in two stages. The daily files are calculated from the original hourly files, then the monthly files are calculated from the daily files. See Technical Guide to Derived Products from CSIRO eReefs Models for details on the regridding process.Data Dictionary:Daily statistics:The following variables can be found in the Daily statistics product:- temp_mean: mean temperature for each grid cell for the day.- temp_min: minimum temperature for each grid cell for the day.- temp_max: maximum temperature for each grid cell for the day.- temp_range: difference between maximum and minimum temperatures for each grid cell for the day.- eta_mean: mean surface elevation for each grid cell for the day.- eta_min: minimum surface elevation for each grid cell for the day.- eta_max: maximum surface elevation for each grid cell for the day.- eta_range: difference between maximum and minimum surface elevation for each grid cell for the day.Depths:Depths at 1km resolution: -2.35m, -5.35m, -18.0m, -49.0mDepths are 4km resolution: -1.5m, -5.55m, -17.75m, -49.0m* Monthly statistics:The following variables can be found in the Monthly statistics product:- temp_min_min: the minimum value of the "temp_min" variable from the Daily statistics product. This equates to the minimum temperature for each grid cell for the corresponding month.- temp_min_mean: the mean value of the "temp_min" variable from the Daily statistics product. This equates to the mean minimum temperature for each grid cell for the corresponding month.- temp_max_max: the maximum value of the "temp_max" variable from the Daily statistics product. This equates to the maximum temperature for each grid cell for the corresponding month.- temp_max_mean: the mean value of the "temp_max" variable from the Daily statistics product. This equates to the mean maximum temperature for each grid cell for the corresponding month.- temp_mean: the mean value of the "temp_mean" variable from the Daily statistics product. This equates to the mean temperature for each grid cell for the corresponding month.- temp_range_mean: the mean value of the "temp_range" variable from the Daily statistics product. This equates to the mean range of temperatures for each grid cell for the corresponding month.- eta_min_min: the minimum value of the "eta_min" variable from the Daily statistics product. This equates to the minimum surface elevation for each grid cell for the corresponding month.- eta_min_mean: the mean value of the "eta_min" variable from the Daily statistics product. This equates to the mean minimum surface elevation for each grid cell for the corresponding month.- eta_max_max: the maximum value of the "eta_max" variable from the Daily statistics product. This equates to the maximum surface elevation for each grid cell for the corresponding month.- eta_max_mean: the mean value of the "eta_max" variable from the Daily statistics product. This equates to the mean maximum surface elevation for each grid cell for the corresponding month.- eta_mean: the mean value of the "eta_mean" variable from the Daily statistics product. This equates to the mean surface elevation for each grid cell for the corresponding month.- eta_range_mean: the mean value of the "eta_range" variable from the Daily statistics product. This equates to the mean range of surface elevations for each grid cell for the corresponding month.Depths:Depths at 1km resolution: -2.35m, -5.35m, -18.0m, -49.0mDepths are 4km resolution: -1.5m, -5.55m, -17.75m, -49.0mWhat does this dataset show:The temperature statistics show that inshore areas along the coast get significantly warmer in summer and cooler in winter than offshore areas. The daily temperature range is lower in winter with most areas experiencing 0.2 - 0.3 degrees Celsius temperature change. In summer months the daily temperature range approximately doubles, with up welling areas in the Capricorn Bunker group, off the outer edge of the Prompey sector of reefs and on the east side of Torres Strait seeing daily temperature ranges between 0.7 - 1.2 degree Celsius. Limitations:This dataset is based on spatial and temporal models and so are an estimate of the environmental conditions. It is not based on in-water measurements, and thus will have a spatially varying level of error in the modelled values. It is important to consider if the model results are fit for the intended purpose.Change Log:2025-10-29: Updated the metadata title from 'eReefs AIMS-CSIRO Statistics of hydrodynamic model outputs' to 'Daily and monthly minimum, maximum and range of eReefs hydrodynamic model outputs - temperature, water elevation (AIMS, Source: CSIRO)'. Improve the introduction text. Corrected deprecated link to NCI THREDDS. Added a description of what the dataset shows.

衍生数据集包含基于eReefs CSIRO水动力模型（hydrodynamic model）v2.0版本（1 km及4 km分辨率）和v4.0版本（4 km分辨率）输出结果的基础统计产品，涵盖日、月两种聚合周期。生成的统计量包括日最小值、最大值、均值及范围；月聚合统计量则包含日最小值、最大值、范围的月均值，以及月最小值、最大值及范围。该数据集仅针对温度和水位高程（eta）计算统计量。

这些统计产品由AIMS eReefs平台（https://ereefs.aims.gov.au/）生成，源自可通过国家计算基础设施（NCI）获取的原始小时模型输出（https://thredds.nci.org.au/thredds/catalogs/fx3/catalog.html）。数据通过重网格化从eReefs模型原始的曲线网格（curvilinear grid）转换为规则网格，以便于加载至标准地理信息系统（GIS）软件。

方法：
数据文件处理分为两个阶段：先从原始小时文件计算日统计文件，再基于日统计文件生成月统计文件。重网格化过程详情参见《CSIRO eReefs模型衍生产品技术指南》。

数据字典：
日统计量：
- temp_mean：各网格单元的日平均温度
- temp_min：各网格单元的日最低温度
- temp_max：各网格单元的日最高温度
- temp_range：各网格单元的日温度范围
- eta_mean：各网格单元的日平均水位高程
- eta_min：各网格单元的日最低水位高程
- eta_max：各网格单元的日最高水位高程
- eta_range：各网格单元的日水位高程范围

深度：
1 km分辨率下的深度值：-2.35m、-5.35m、-18.0m、-49.0m
4 km分辨率下的深度值：-1.5m、-5.55m、-17.75m、-49.0m

月统计量：
- temp_min_min：日最低温度的月最小值（即各网格单元对应月份的最低温度）
- temp_min_mean：日最低温度的月均值（即各网格单元对应月份的平均最低温度）
- temp_max_max：日最高温度的月最大值（即各网格单元对应月份的最高温度）
- temp_max_mean：日最高温度的月均值（即各网格单元对应月份的平均最高温度）
- temp_mean：日平均温度的月均值（即各网格单元对应月份的平均温度）
- temp_range_mean：日温度范围的月均值（即各网格单元对应月份的平均温度范围）
- eta_min_min：日最低水位高程的月最小值（即各网格单元对应月份的最低水位高程）
- eta_min_mean：日最低水位高程的月均值（即各网格单元对应月份的平均最低水位高程）
- eta_max_max：日最高水位高程的月最大值（即各网格单元对应月份的最高水位高程）
- eta_max_mean：日最高水位高程的月均值（即各网格单元对应月份的平均最高水位高程）
- eta_mean：日平均水位高程的月均值（即各网格单元对应月份的平均水位高程）
- eta_range_mean：日水位高程范围的月均值（即各网格单元对应月份的平均水位高程范围）

深度：
1 km分辨率下的深度值：-2.35m、-5.35m、-18.0m、-49.0m
4 km分辨率下的深度值：-1.5m、-5.55m、-17.75m、-49.0m

本数据集展示内容：
温度统计显示，沿岸近岸区域夏季显著暖于远海区域，冬季则更冷。冬季日温度范围较小，多数区域变化在0.2-0.3摄氏度之间；夏季日温度范围约翻倍，Capricorn Bunker群岛上升流区域、Prompey礁区外缘及托雷斯海峡东侧的日温度范围可达0.7-1.2摄氏度。

局限性：
本数据集基于时空模型，是环境条件的估计值，非水体实测数据，因此模型值存在空间变化的误差。需重点考虑模型结果是否适用于预期用途。

变更日志：
2025-10-29：将元数据标题从“eReefs AIMS-CSIRO水动力模型输出统计”更新为“eReefs水动力模型输出的日、月最小值、最大值及范围——温度、水位高程（AIMS，来源：CSIRO）”；优化引言文本；修正NCI THREDDS的过时链接；新增数据集展示内容描述。