Here is the overview of the current status of multi-platform observations related to ocean acidifcation. The GOA-ON data portal shows the distribution of sampling efforts around the globe, while the SDG 14.3 data portal provides an overview of the current data submitted to inform indicator 14.3.1: Average marine acidity (pH) measured at agreed suite of representative sampling stations.

GOAON data portal - February 2021 - live updates at: http://portal.goa-on.org/Explorer 

SDG 14.3 Data Portal - February 2021 - live updates at https://oa.iode.org