HOMER, Alaska — Kris Holderied, who directs the National Oceanic and Atmospheric Administration’s Kasitsna Bay Laboratory, says the ocean’s increasing acidity is “the reason fishermen stop me in the grocery store.”

“They say, ‘You’re with the NOAA lab, what are you doing on ocean acidification?’ ” Holderied said. “This is a coastal town that depends on this ocean, and this bay.”

Efforts to deal with increasing acidification of the oceans will get a signal of support Sunday with a U.S. announcement that it will provide $1 million over the next three years to launch a global monitoring network.

The creation of the International Coordinating Office for Ocean Acidification, which will be housed within the International Atomic Energy Agency’s Environment Laboratories in Monaco, marks the first worldwide effort to track how increasing carbon emissions are making the world’s oceans more acidic.

YOU'D THINK that the threat to the Earth's climate posed by greenhouse gas emissions would be enough to get policymakers to take seriously the need to reduce human use of fossil fuels. Rising sea levels, reduced polar ice and dramatic regional climate shifts represent serious dangers to the way of life of large swaths of the world's population. Now a new report by a group of federal scientists and university researchers highlights a different threat posed by carbon emissions, one with its own set of potentially devastating ecological consequences: the increasing acidity of the oceans.