February 28-March 3 2023 (XR05)

1. Station map

Fig. 1 Station map of all CTD casts.

2. Cruise Participants

Chief Scientist

Dr. Xinping Hu (TAMUCC), project lead

Senior Scientists

Dr. Sakib Mahmud (TAMU/GERG), co-chief scientist

Scientific Party

Dr. Xiao Ge (TAMU/GERG), CTD sampling
Izzie Wang (TAMU/OCNG), CTD sampling
Jocelyn Morales (TAMU/OCNG), CTD sampling
Arantxa Sacristan Ramirez, (TAMU/OCNG), CTD sampling
Matthew Smith (TAMU/OCNG), CTD sampling
Gina Milton (TAMU/GERG), CTD sampling
Cory Staryk (TAMUCC), DIC sampling, CTD sampling
Dr. Hang Yin (TAMUCC), DIC sampling, CTD sampling
Eva Jundt(TAMUCC), DIC sampling, CTD sampling
Dr. Yajuan Liu (TAMUCC), Biological sample
Heather Donnelly (BC), Nitrogen isotopes
Jack Lloyd (UTMSI), Marine organic matter

3. Sample Collection

During the cruise, CTD casts were made at 22 stations across the studied area. A total of 206 dissolved oxygen samples were analyzed on board the ship using Winkler titration. A total of 215 nutrient samples and 68 salinity samples were collected for lab analysis at GERG/TAMU. A total of 186 samples were collected for carbonate chemistry characterization (total alkalinity, total dissolved inorganic carbon, and pH) at TAMU-CC.

4. Preliminary Results

Fig. 2 A scatter plot of potential temperature and salinity from all CTD cases.

Fig. 3 Sea surface CO₂ partial pressure (pCO₂), temperature (SST), and salinity (SSS) along the cruise track.