
A Florida Fish and Wildlife scientist takes red tide samples. (FWC)
Background
The Harmful Algal BloomS Observing System (HABSOS) began as a pilot project in 2001 to focus on recent Karenia brevis blooms in the Gulf of Mexico. This project identified a need for a harmful algal bloom observing network. Many individuals from Gulf of Mexico state agencies and universities, US Environmental Protection Agency, and NOAA National Coastal Data Development Center (NCDDC) participated in this project. This product developed a strong partnership between Gulf of Mexico partners and NOAA National Centers for Environmental Information (formerly NCDDC).
HABSOS evolved into a database of HAB observations and associated environmental observations submitted by the partners who collect these data. These data are updated annually and made publicly available in the NCEI archive and via the interactive map viewer. NCEI’s HABSOS provides a research quality HAB dataset and HAB observations in near-real time.
Access Data

Interactive ArcGIS Map - search, view and download data
Download Data
- Individual data files: 120767
- 120767.5.5.tar.gz (33.44 MB)
Dataset Resources
How to Cite:
NOAA National Centers for Environmental Information (2014). Physical and biological data collected along the Texas, Louisiana, Mississippi, Alabama, and Florida Gulf coasts in the Gulf of Mexico as part of the Harmful Algal BloomS Observing System from 1953-08-19 to 2020-03-09 (NCEI Accession 0120767). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0120767. Accessed [date].