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

Individual absorbance spectra (.dat files) of water samples from the Tapajós River collected between 2016-2023. File names include the identifier ABS, indicating absorbance spectra. The column ABS_Filename in the supplemental file 986855_v1_file-metadata.csv provides the file name used to link each ABS data file to its corresponding sample identifier, collection date, and location.

Individual EEM fluorescence spectra (.dat files) of water samples from the Tapajós River collected between 2016-2023. File names include the identifier PEM, indicating a processed excitation–emission matrix (corrected and Raman-normalized). The column EEM_Filename in the supplemental file 986855_v1_file-metadata.csv provides the file name used to link each EEM (PEM) data file to its corresponding sample identifier, collection date, and location.

Supplemental metadata per ABS and EEM (PEM) file. This table contains sample ID, date, latitude, and longitude for each file contained in Data packages Tapajos_ABS.zip and Tapajos_EEM.zip. Columns: Sample_Name, Sample name Date, Sampling date (in format %A, %B %d, %Y) Date_ISO, Sampling date in ISO 8601 format (%Y-%m-%d) lat_dd, Sample latitude in decimal degrees lon_dd, Sample longitude in decim...