Estimating the portion of Marine Cloud Brightening sea-salt aerosols that activate when incorporated into low-lying marine clouds: preliminary results

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https://gfzpublic.gfz-potsdam.de/pubman/faces/ViewItemFullPage.jsp?itemId=item_5019225_2

Authors

Hernandez-Jaramillo, Diana C.
Medcraft, Chris
Braga, Ramon C.
Rosenfeld, Daniel
Harrison, Daniel

Citations: Hernandez-Jaramillo, D. C., Medcraft, C., Braga, R. C., Rosenfeld, D., Harrison, D. (2023): Estimating the portion of Marine Cloud Brightening sea-salt aerosols that activate when incorporated into low-lying marine clouds: preliminary results, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-2669

August 2023

Abstract

Airborne measurements were carried out as part of the Australian Marine Cloud Brightening (MCB) campaign performed between mid-February and early April 2023 in the Southern part of the Great Barrier Reef (GBR). MCB may have the potential to mitigate episodic bleaching events exacerbated by climate change at the scale of the GBR by the aerosol direct effect and indirect effects on aerosol optical depth and net albedo of low-level maritime clouds respectively. During the campaign experiments were conducted by atomising seawater at the stern of a research vessel at a target production rate of approximately 10^14 s^-1 sea salt aerosols (SSA). Sampling measurements were performed from a Cessna 337 aircraft equipped to measure aerosols, cloud properties and meteorological conditions. The sampling strategy included consecutive transects at cloud base at the intersection of the sea salt aerosol (SSA) plume and low-level maritime clouds, followed by in-cloud sampling of perturbed clouds. In this study I aim to determine the actual production rate of SSA achieved, and what portion are incorporated into cloud and subsequently activated to form cloud droplets as a function of boundary layer conditions and turbulence. This work was undertaken as part of the Reef Restoration and Adaptation Program, funded by the partnership between the Australian Governments Reef Trust and the Great Barrier Reef Foundation.

Source: GFZ

[Stephen Salter]

Hi anyone

This looks extremely important. Please help me download the paper.

Stephen

Emeritus Professor of Engineering Design

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Scotland

0131 662 1180

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