Trace Gases

Trace Gases

Tracing Ocean Circulation with CFCs CFC analyst Riley Ames explains how scientists use gas chromatography to “date” seawater and trace ocean circulation ; 6/28/2026  Ahoy there! My name is Riley Ames, and I am measuring trace gases for P04E onboard the R/V...
Dissolved Oxygen

Dissolved Oxygen

Sampling Dissolved Oxygen in the Pacific Join oceanographer Maija Zidek as she measures dissolved oxygen and uncovers a pronounced Oxygen Minimum Zone in the Pacific ; 6/20/2026 Inhale- exhale. Inhale again- exhale again. What you just experienced was oxygen entering...
CTD Rosette

CTD Rosette

What’s a CTD rosette and why does it matter?  The one-ton instrument at the center of repeat hydrography — and what it reveals about a changing ocean. ; 6/5/2026 I’m on board the R/V Marcus G. Langseth in the tropical North Pacific, conducting repeat hydrography along...
Tangible Ocean

Tangible Ocean

The Tangible Ocean  A physical oceanographer trades data screens for open ocean — and finds the sea full of life, light, and scale too vast for any map. ; 6/5/2026 I’m a second‑year PhD student in observational physical oceanography, and I’ve been an ocean researcher...
Underway

Underway

Underway and here to stay CTD watchstander Sarah Packman describes the first 3 weeks at sea aboard the R/V Langseth ; 6/1/2026 Hi y’all! My name is Sarah Packman, and I am a CTD watchstander aboard the R/V Langseth for P04E. After 3 weeks at sea, the science party has...
On Dry Land

On Dry Land

On Dry Land: The Marshall Islands Coral reefs, WWII wrecks, and warm welcomes while the science crew awaits departure from Majuro ; 5/9/2026 Iakwe from Majuro in the Marshall Islands! I’m Emma and I am a CTD Watchstander on the sunset shift (noon to midnight) on the...