Raw stable water isotope measurements in water vapour at 13.5 m a.s.l., made in the austra

The Southern Ocean is the geographic scope of this dataset of raw stable water vapour isotope measurements. It was collected during the Antarctic Circumnavigation Expedition (ACE) from November 2016 to April 2017 using a Picarro laser spectrometer at a height of 13.5 meters above sea level. The data was authored by Iris Thurnherr of ETH Zurich and requires calibration following IAEA guidelines.

Use Cases

• Calibrating stable water isotope measurements based on the described calibration runs and IAEA guidelines.
• Comparing water vapour isotope profiles based on the mention of similar datasets collected at different heights (8 m vs. 13.5 m a.s.l.).
• Analyzing temporal trends in deuterium excess over the austral summer period described.
• Studying water vapour mixing ratio dynamics in the Southern Ocean region mentioned.

Strengths

• Data is part of a coordinated set of three similar datasets from the same expedition, enabling comparative analysis.
• Specific measurement instrument (Picarro laser spectrometer L2130) and collection height (13.5 m a.s.l.) are documented.
• Raw data is provided, allowing for custom calibration procedures as described.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data requires calibration using separate calibration runs, adding a preprocessing step.

Provenance

Source

ETH Zurich

Collection Method

Measured in situ using a Picarro laser spectrometer L2130.

Time Range

November 2016 to April 2017

Geography

Southern Ocean during the Antarctic Circumnavigation Expedition