MODIS Derived Chlorophyll a dataset: Seasonal Means

The dataset measures the long-term seasonal means of the chlorophyll a concentrations of ocean surface waters. They are derived from MODIS (aqua) images using NASA's SeaDAS image processing software. The monthly chlorophyll a images between July 2002 and December 2017 are used to calculate the means of the four austral seasons: winter (June, July, and August), spring (September, October and November), summer (December, January and February) and autumn (March, April and May). The extent of the dataset covers the entire Australian EEZ and surrounding waters (including the southern ocean). The unit of the dataset is mg/m3.This research is supported by the National Environmental Science Program (NESP) Marine Biodiversity Hub through Project D1.

本数据集量化了海洋表层水体叶绿素a浓度的长期季节平均值。数据源自搭载于Aqua卫星的中分辨率成像光谱仪（MODIS）影像，经美国国家航空航天局（NASA）的SeaDAS图像处理软件处理得到。研究采用2002年7月至2017年12月的月度叶绿素a影像，计算得到南半球四个季节的平均值：冬季（6、7、8月）、春季（9、10、11月）、夏季（12月、1月及2月）与秋季（3、4、5月）。数据集覆盖范围涵盖澳大利亚专属经济区（EEZ）及其周边海域（包括南大洋）。本数据集的单位为毫克每立方米（mg/m³）。本研究由国家环境科学计划（NESP）海洋生物多样性枢纽依托D1项目资助。