2018-2019 Science Planning Summaries
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2018-2019 USAP Field Season
Project Detail

Project Title

High-resolution underway air-sea observations in Drake Passage for climate science

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O-260-L Research Location(s): Drake Passage


Event Number:
NSF/OPP Award 1542902

Program Manager:
Dr. Peter Milne

ASC POC/Implementer:
Rachel Shackelford / Bruce Felix

Principal Investigator(s)

Dr. Janet Sprintall
Scripps Institution of Oceanography
Physical Oceanography Research Division
La Jolla, California

Project Web Site:


Supporting Stations: ARSV Laurence M. Gould
Research Locations: Drake Passage


In collaboration with Chereskin (O-217-L), this project continues a long-term study of ocean properties and variability in the Antarctic Circumpolar Current (ACC) by repeat transects across the Drake Passage from Punta Arenas, Chile to Palmer Station. This aspect of the project measures the seasonal to interannual variability of upper-ocean temperature and geostrophic transport through the Drake Passage with closely spaced eXpendable BathyThermograph (XBT) deployments.

Field Season Overview

ARSV Laurence M. Gould (LMG) personnel and passenger volunteers will hand-launch about 70 XBTs at predetermined locations on each of six Drake Passage crossings of the LMG. Salinity bottle samples will also be collected at various sites. This bottle data will be used to calibrate the underway thermosalinograph (TSG) data.