Basic descriptions
This dataset covers two decades (2003-2022) of phytoplankton absorption coefficients at 443nm (aph(443)) in Chinese coastal waters (water depth < 200m). The data were derived from Remote Sensing Reflectance (Rrs) using newly enhanced coastal aerosol models in combination with NASA’s standard atmospheric correction methods. The resulting aph(443) values were then retrieved through the QAA_V6 algorithm. Based on 43,476 MODIS Aqua daily images at 1km resolution, the dataset was processed to produce a monthly median composite of aph(443) values.

Data download
The China coastal phytoplankton absorption coefficient dataset is publicly available at this lab webpage via the following link:
https://doi.org/10.6084/m9.figshare.30112450.v1
Related Publications
Wu, Y., Feng, L., Liu, X., Wang, Y., & Zheng, C. (2025). Declining Phytoplankton Biomass in Chinese Coastal Oceans Linked to Climate Warming. Environmental Science & Technology 2025 59 (23), 11607-11615.