Knut von Salzen

On the Range of Marine Cloud Brightening Radiative Forcing across Earth System Models

Haruki Hirasawa, Knut von Salzen, Matthew Henry, Josh Smith et autres

Abstract. Marine cloud brightening (MCB) is a solar radiation modification method that involves using injections of sea salt aerosol (iSSA) particles to increase cloud albedo and cool surface climate. Earth system models (ESMs) are crucial tools for projecting the potential climate response …

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Supplementary material to "On the Range of Marine Cloud Brightening Radiative Forcing across Earth System Models"

Haruki Hirasawa, Knut von Salzen, Matthew Henry, Josh Smith et autres

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Effect of two-moment aerosol microphysics on the Canadian Atmospheric Model

Luke Fraser-Leach, Paul J. Kushner, Ruth A. R. Digby, Knut von Salzen et autres

The default version of the Canadian Atmospheric Model (CanAM) uses a “bulk” aerosol scheme in which only aerosol mass is prognostic. An alternative two-moment aerosol scheme with prognostic aerosol mass and number, called the Piecewise Lognormal Approximation (PLA) Aerosol Model (PAM), has …

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Near-term anthropogenic aerosol reductions under a future sustainability pathway could avert nearly 40% of mid-century PM2.5 mortality

Joe Adabouk Amooli, Kostas Tsigaridis, Sourangsu Chowdhury, Sharar Ahmadi et autres

Ambitious climate and air quality mitigation cuts anthropogenic aerosol emissions, lowering fine particulate matter (PM 2.5 ) and mortality, but the magnitude, regional distribution, and uncertainty of these reductions remain insufficiently quantified. Using nine Earth System Models from the Regional Aerosol Model …

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Regional aerosol emission reductions alter tropical circulation

JoonGu Jeon, Robert J. Allen, Sang‐Wook Yeh, Chang‐Eui Park et autres

Abstract Anthropogenic aerosol emissions are projected to decline rapidly in the near future as air quality regulations strengthen. Crucially, however, the response of large-scale atmospheric circulation to these reductions remains a major source of uncertainty. Here, we use multi-model ensembles from Regional …

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Comment on egusphere-2026-2730

Lucas A. McMichael, Ehsan Erfani, Robert Wood, Knut von Salzen

Abstract. The amount of sunlight that reaches Earth's surface can be reduced by increasing cloud droplet number and decreasing droplet size (i.e., Twomey forcing), a central idea underpinning the Marine Cloud Brightening strategy. Cloud albedo depends nonlinearly on cloud droplet concentration, meaning …

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Comment on egusphere-2026-2730

Lucas A. McMichael, Ehsan Erfani, Robert Wood, Knut von Salzen

Abstract. The amount of sunlight that reaches Earth's surface can be reduced by increasing cloud droplet number and decreasing droplet size (i.e., Twomey forcing), a central idea underpinning the Marine Cloud Brightening strategy. Cloud albedo depends nonlinearly on cloud droplet concentration, meaning …

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Comment on egusphere-2026-2198

Bosi Sheng, Massimo A. Bollasina, Alexandre S. Gagnon, Laura J. Wilcox et autres

Abstract. Southern Africa (SA) is highly sensitive to rainfall changes, as water availability significantly influences agriculture, ecosystems, and the region's socio-economic stability. Observations reveal substantial multi-decadal changes in December–February precipitation during the second half of the 20th century, characterized by enhanced rainfall …

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Comment on egusphere-2026-2198

Bosi Sheng, Massimo A. Bollasina, Alexandre S. Gagnon, Laura J. Wilcox et autres

Abstract. Southern Africa (SA) is highly sensitive to rainfall changes, as water availability significantly influences agriculture, ecosystems, and the region's socio-economic stability. Observations reveal substantial multi-decadal changes in December–February precipitation during the second half of the 20th century, characterized by enhanced rainfall …

gb, cn, fr, us, no, fi, jp, ca (code pays fourni par la source)

AMOC weakening in response to global and regional reductions in aerosol emissions

Robert J. Allen, Timothy Carson, Wei Liu, Laura J. Wilcox et autres

In response to continued greenhouse gas (GHG) increases, the Atlantic Meridional Overturning Circulation (AMOC) is expected to weaken through the 21st century. However, AMOC impacts associated with efforts to improve air quality are less well understood. Here, eight models from the Regional …

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AMOC weakening in response to global and regional reductions in aerosol emissions

Robert J. Allen, Timothy Carson, Wei Liu, Laura J. Wilcox et autres

In response to continued greenhouse gas (GHG) increases, the Atlantic Meridional Overturning Circulation (AMOC) is expected to weaken through the 21st century. However, AMOC impacts associated with efforts to improve air quality are less well understood. Here, eight models from the Regional …

us, gb, no, se, ca, jp, fi (code pays fourni par la source)

Estimating Twomey forcing sensitivity to aerosol plume spreading rates

Lucas A. McMichael, Ehsan Erfani, Robert Wood, Knut von Salzen

Abstract. The amount of sunlight that reaches Earth's surface can be reduced by increasing cloud droplet number and decreasing droplet size (i.e., Twomey forcing), a central idea underpinning the Marine Cloud Brightening strategy. Cloud albedo depends nonlinearly on cloud droplet concentration, meaning …

us (code pays fourni par la source)