DATA_CODE_MODEL

This item includes data and code used and the full details of the model in the manuscript titled <i>A general phytoplankton-transport relationship in coastal aquatic systems </i>by Qubin Qin and Jian Shen.<br>Software needed: Most data were analyzed using MATLAB (version R2018b), and the volumes of the two study regions are calculated from bathymetric data using ArcGIS (version 10.7). <br><br>Data source: Monthly data of chlorophyll a concentration, salinity were collected at the main-channel long-term monitoring stations in Chesapeake Bay and its tributaries by the Chesapeake Bay Program (http://www.chesapeakebay.net/). Except for salinity, only surface data of other variables (0.5 m below the water surface) were used. The river discharge data at the fall-lines were collected by the United States Geological Survey (https://waterdata.usgs.gov/nwis/nwis). The volumes of the two study regions were determined based on USGS/NOAA bathymetric data and navigation charts.<br>Sampling information: chlorophyll a concentration and salinity were measured at fixed long-term monitoring stations during each cruise (one or two cruises for each month). For the upper-middle Chesapeake Bay, data from 1984-2015 were collected at 10 stations within the region. For the tidal freshwater James River Estuary, data of chlorophyll a concentration from 1990-2013 were collected at 6 stations. Such large data sets of multiple years also allow there are enough good and robust data for demonstration even data in a few years are not good due to uncertainties in data collection and calculation.本数据集包含论文《*近海水生系统中的通用浮游植物-输运关系*》（*A general phytoplankton-transport relationship in coastal aquatic systems*）中所使用的全部数据、代码以及模型的完整细节，作者为秦曲斌（Qubin Qin）与沈健（Jian Shen）。<br>所需软件：绝大多数数据采用MATLAB（R2018b版本）进行分析，两处研究区域的容积则通过ArcGIS（10.7版本）基于水深数据计算得出。<br><br>数据来源：切萨皮克湾项目（Chesapeake Bay Program，http://www.chesapeakebay.net/）于切萨皮克湾及其支流的主航道长期监测站点采集了叶绿素a（chlorophyll a）浓度与盐度（salinity）的月度监测数据。除盐度外，其余变量仅采用水面下0.5米处的表层观测数据。美国地质调查局（United States Geological Survey，https://waterdata.usgs.gov/nwis/nwis）采集了河流断裂带处的径流数据。两处研究区域的容积基于美国地质调查局/美国国家海洋和大气管理局（USGS/NOAA）的水深数据与航海图表确定。<br><br>采样信息：每次巡航（每月开展1至2次巡航）均在固定长期监测站点测定叶绿素a浓度与盐度。针对切萨皮克湾中上部区域，1984-2015年的监测数据采自该区域内的10个站点；针对潮汐淡水詹姆斯河河口，1990-2013年的叶绿素a浓度数据采自6个监测站点。此类多年度的大规模数据集，即便部分年份因数据采集与计算过程中的不确定性导致数据质量欠佳，仍可提供充足优质且可靠的样本数据用于演示验证。