The Human Impacts Database

A collection of useful numbers for quantifying the impacts of the human presence on Earth.


Annual increase in ocean surface H+ concentration

WaterOceans & Seas

This quantity comes from a time series measurement and the most recent value (1985-2018) is reported.

Value: 0.36 ± 0.03 %
HuID: 19394
Relevant Year(s): 1985-2018
Summary: The annual increase for 2017-2018 is ≈ 0.2 %. The average annual increase for the period 1985-2018 is ≈ 0.4 %. See Fig 2 on source website. Values are reported as global averaged ocean surface pH. Yearly percent change in H+ concentration can be calculated as [10-∆pH - 1] x 100.
Method: Reported value is the mean and standard error for year-to-year changes in [H+] from 1985 - 2018.
Source: Copernicus Marine Environment Monitoring Service Ocean Acidification. (2020)
Dataset: Global ocean pH trend (CMEMS_trends_ocean_pH.csv)
global resolution
Original Data License: EEA Public Domain
Added By: gchure