Annika Seppälä

Annika Seppälä

Lead, Atmospheric Science
University of Otago
Catalyst: Seeding award to build a partnership with NASA JPL featured image

Catalyst: Seeding award to build a partnership with NASA JPL

A two-year Catalyst: Seeding project pairs Tuwhiri's photonic sensor with a flight-proven JPL microwave spectrometer, aimed at measuring stratospheric water vapour.

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Harald G. L. Schwefel

Millimeter-Wave Atmospheric Radiometry via Nonlinear Optical Upconversion

The monitoring of the Earth’s atmospheric composition requires very sensitive satellite-based measurements that detect the thermal radiation emitted in the millimeter-wave and …

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Florian Sedlmeir

A novel diagnostic metric for quantifying Antarctic ozone hole dynamics

For the next several decades, the Antarctic ozone hole will remain an annual phenomenon. As concentrations of stratospheric chlorine gradually decrease, so will the severity of …

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Hannah E. Kessenich

Quantifying the contribution of transport to Antarctic springtime ozone column variability

Abstract. Quantifying chemical and dynamical drivers of Antarctic ozone variability remains important as stratospheric chlorine levels gradually reduce and the ozone hole recovers …

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Hannah E. Kessenich