In general, my research is driven by the desire to expand our process understanding of different phenomena found within the Earth's atmosphere. In pursuing this goal I perform high-resolution short time scale studies to further understand local phenomena and small-scale processes that may have large-scale (temporal and spatial) impacts, as well as low-resolution climate simulations assessing climate impacts stemming from human activity.

Below you may find a brief overview of my research, which focuses on feedback mechanisms triggered in polluted marine boundary clouds. In addition to this work I have explored the potential climate impacts due to the large-scale deployment of wind turbines and the geophysical limits of wind power imposed by the dynamics of the atmosphere.

March 31, 2020

Figure: The black lines of the left-hand side figure show the relative distribution of all stratocumulus decks worldwide for two different organisational states: open and closed cells [Courtesy: Fig. 10 from Muhlbauer et al (2014)]. Overlaid colour bars denote the dept...

March 27, 2020

Figure [courtesy: Diamond et al. (2020)]: Increase in cloud optical thickness (measure of reflectivity of a cloud) within the shipping corridor relative to outside the shipping corridor (black curve). The total change in reflectivity was split into two contributing pro...

February 28, 2020

Figure: Schematic summarising sources of anthropogenic aerosol and their direct interaction with radiation and their impact on clouds which in turn alter the balance of incoming and outgoing radiation. Processes associated with a high degree of uncertainty with respect...

December 20, 2019

Figure [Courtesy Eirund et al (2019)]: Snapshot of vertically integrated liquid water path (LWP) and ice water path (IWP) of mixed phase clouds simulated within the control simulation (frame 1), a simulation with enhanced ice formation (frame 2), and a simulation of en...

August 10, 2019

Figure 1 [Courtesy: Eirund et al (2019)]:  Schematic illustrating the change in Arctic stratocumulus cloud properties over the open ocean (top row) as compared to a stratocumulus layer over an ice surface (bottom row).

This case study lead by Gesa Eirund (ETH Zurich) de...

March 28, 2019

Figure: LHS: Cloud albedo of a shallow cloud scene where a ship track forms around the emission source. The ship is moving continuously through the domain from right to left. RHS: The same is shown for a different cloud scene (deeper boundary layer) where the same ship...

October 16, 2018

From November 1st, I will be starting my own research group at the Institute for Atmospheric and Environmental Science at Goethe University in Frankfurt. The program is funded by the German Federal Ministry of Education and Research ("BMBF") and managed through the Ger...

October 9, 2017

Figure 1: Floating wind turbines being transported to the first floating turbine wind farm site (Hywind project) situated off the north-east coast of Scotland (Image courtesy: Terje Aase/Shutterstock.com)

Surface climatologies of wind speeds show that wind speeds over t...

February 1, 2017

Figure: Process schematic of aerosol cloud effects in boundary layer mixed-phase clouds (See text for explanation).

In the Arctic, climate change effects are proceeding more rapidly than the rest of the world, which is commonly referred to "Arctic amplification". Due to...

May 17, 2016

Table: Ship-induced changes in the mean shortwave (SW) cloud radiative effect (CRE) at the top of atmosphere and cloud optical thickness τ. Ship simulations were run at resolutions listed, whilst in the Dil simulations merely the ship particle flux was coarse grained t...

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