Absorbance and Excitation Emission spectra (EEMs) measurements of the Tapajós River, Brazil from 2016-2023

This dataset includes individual absorbance spectra and excitation emission fluorescence spectra  from river water sampled near-monthly from the Tapajós River, Brazil between 2016-2023. Both absorbance and fluorescence data were collected on a Horiba Aqualog spectrophotometer. Trends in optical absorbance and fluorescence maxima reveal signatures for DOM sourcing into the river as well as evidence for in-stream processing and molecular stability of exported organic matter.

本数据集涵盖2016至2023年间，在巴西塔帕若斯河（Tapajós River）周边以近月度采样频次获取的河流水样的独立吸光度光谱与激发发射荧光光谱。
所有吸光度与荧光数据均通过Horiba Aqualog型分光光度计采集完成。
光吸光度与荧光峰值的变化趋势，既揭示了输入该河流的溶解有机质（Dissolved Organic Matter, DOM）的来源特征，同时也为河道内转化过程以及输出的有机质的分子稳定性提供了实证依据。