An ocean first: Underwater drone tracks CO2 in Alaska gulf


              This May 4, 2022, photo shows University of Alaska Fairbanks oceanographer Andrew McDonnell checking data on his computer aboard the University of Alaska Fairbanks research vessel Nanuq in the Gulf of Alaska. The data was from a special sensor which was fitted to an underwater glider to study ocean acidification. (AP Photo/Mark Thiessen)
            
              This May 4, 2022, photo shows oceanographer Claudine Hauri on the University of Alaska Fairbanks research vessel Nanuq in the Gulf of Alaska. She is part of a team that fitted an underwater glider with special sensors to study ocean acidification. (AP Photo/Mark Thiessen)
            
              This May 4, 2022, photo shows sensors to measure carbon dioxide and methane, to be used separately on an underwater glider in the Gulf of Alaska. The glider was fitted with special sensors to collect an enormous amount of data to study ocean acidification. (AP Photo/Mark Thiessen)
            
              This May 4, 2022, photo shows a sensor after it was removed from an underwater glider on the University of Alaska Fairbanks research vessel Nanuq in the Gulf of Alaska. The glider was fitted with special sensors to study ocean acidification. Oceanographers from the University of Alaska Fairbanks tests have been conducting tests this spring with a drone that goes underwater, configured with a sensor specifically designed to measure carbon dioxide levels. (AP Photo/Mark Thiessen)
            
              This May 4, 2022, photo shows an underwater glider being pulled apart on the University of Alaska Fairbanks research vessel Nanuq in the Gulf of Alaska to allow a sensor inside to be swapped out. The glider was fitted with special sensors to study ocean acidification. (AP Photo/Mark Thiessen)
            
              This May 3, 2022, photo shows engineer Ehsan Abdi checking data on his computer after the University of Alaska Fairbanks research vessel Nanuq returned to dock in Seward, Alaska. The data was from a special sensor which Abdi helped fit to an underwater glider to study ocean acidification. (AP Photo/Mark Thiessen)
            
              This May 4, 2022, photo shows engineer Ehsan Abdi looking from the other end as a sensor is placed inside an underwater glider on the University of Alaska Fairbanks research vessel Nanuq in the Gulf of Alaska. The glider was fitted with special sensors to study ocean acidification. (AP Photo/Mark Thiessen)
            
              This May 4, 2022, photo shows an underwater glider bobbing in the Gulf of Alaska. The glider was fitted with special sensors to study ocean acidification. (AP Photo/Mark Thiessen)
            
              This April 28, 2022, photo provided by Andrew McDonnell shows an underwater glider waiting to be picked up in the Gulf of Alaska by the University of Alaska Fairbanks research vessel Nanuq. The glider was fitted with a special sensor that will collect an enormous amount of data to study ocean acidification. (Andrew McDonnell via AP)
            
              This April 28, 2022, photo provided by Ehsan Abdi shows the University of Alaska Fairbanks research vessel Nanuq in the Gulf of Alaska. The Nanuq helped with a project involving an underwater glider that was fitted with a special sensor, which was used to collect an enormous amount of data to study ocean acidification. (Ehsan Abdi via AP)
            
              This April 28, 2022, photo provided by Andrew McDonnell shows an underwater glider in the Gulf of Alaska. The glider was fitted with a special sensor that will collect an enormous amount of data to study ocean acidification. (Andrew McDonnell via AP)
            
              This May 4, 2022, photo shows oceanographers Andrew McDonnell, left, and Claudine Hauri, middle, along with engineer Joran Kemme after an underwater glider was pulled aboard the University of Alaska Fairbanks research vessel Nanuq from the Gulf of Alaska. The glider was fitted with special sensors to study ocean acidification. (AP Photo/Mark Thiessen)
An ocean first: Underwater drone tracks CO2 in Alaska gulf