A parameterization of cirrus cloud formation: Heterogeneous freezing

By Bernd Kärcher, Ulrike Lohmann. 2003

288 citations recorded by the source corpus.

Subfields: Aerospace Engineering, Atmospheric Science, Global and Planetary Change

View Paper: https://www.semanticscholar.org/paper/273d862846635dca01c4f3d42999dd0b2a53d9e9

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Citations in the corpus

Effect of sulfuric acid coating on heterogeneous ice nucleation by soot aerosol particles (2005, methodology): “Concepts developed for the homogeneous freezing mode [Kärcher and Lohmann, 2002b] have recently been improved and applied for immersion freezing [Kärcher and Lohmann, 2003].”
Bounding Global Aerosol Radiative Forcing of Climate Change (2020, background): “In contrast, in situations dominated by homogeneous1315 nucleation, increasing INP can reduce the available supersaturation below the homoge-1316 neous nucleation threshold, reducing Ni (Kärcher & Lohmann, 2003).”
Global indirect aerosol effects: a review (2004, unknown): “K¨archer and Lohmann (2003) developed a parameterization for heterogeneous immersion freezing of cirrus clouds.”
Predicting global atmospheric ice nuclei distributions and their impacts on climate (2010, background): “While counterintuitive on first glance, and strongly dependent on the dynamical forcing, the lowering of ice crystal concentrations in cirrus ice clouds is predicted to occur under increased IN influence due to earlier-onset ice formation that strongly competes with (and may even prevent) the ubiqui”
The deposition ice nucleation and immersion freezing potential of amorphous secondary organic aerosol: Pathways for ice and mixed‐phase cloud formation (2012, background): “…to an increase in RHice of 2.3% to 1.5% per minute (corresponding to atmospherically relevant updraft velocities [Kärcher and Ström, 2003; Kärcher and Lohmann, 2003; Kärcher et al., 2006]) for temperatures from 260 to 200 K, and exposed to ice supersaturation until ice formation or water…”
Climate impacts of ice nucleation (2012, background): “An increase in heterogeneous freezing can lead to more or less ice crystals depending on updraft velocity [Kärcher and Lohmann, 2003].”
Freezing thresholds and cirrus cloud formation mechanisms inferred from in situ measurements of relative humidity (2003, background): “All ice crystals nucleate between the out-of-cloud and in-cloud cut-offs (K̈archer and Lohmann, 2002, their Fig.”
A large‐eddy model for cirrus clouds with explicit aerosol and ice microphysics and Lagrangian ice particle tracking (2010, methodology): “The shifted activity method (Kärcher and Lohmann, 2003) is used to calculate heterogeneous ice nucleation rates in the immersion mode, retaining the activity-based formulation:”
Modification of cirrus clouds to reduce global warming (2009, unknown): “This process has been coined as the negative Twomey effect (Kärcher and Lohmann 2003) in association with the traditional Twomey effect in liquid water clouds, where increases in cloud condensation nuclei produce higher cloud droplet concentrations and cloud albedo.”
A microphysics guide to cirrus clouds – Part 1: Cirrus types (2015, background): “The frequency spectra and the resulting power spectral density (PSD) are in accordance with Kienast-Sjögren et al. (2015) and also with in situ measurements of temperature fluctuations during several aircraft campaigns (e.”
The Origin of High Ice Crystal Number Densities in Cirrus Clouds (2005, result): “This point is in accordance with findings by Kärcher and Lohmann (2003) and Haag and Kärcher (2004), who termed this the negative Twomey effect.”
A new two-moment bulk stratiform cloud microphysics scheme in the Community Atmosphere Model, version 3 (CAM3). Part I: Description and numerical tests (2008, background): “Currently, in the new scheme, NIN is not directly related to the aerosol characteristics (e.g., concentration of dust aerosols), although recent work (Khvorostyanov and Curry 2005; Kärcher and Lohmann 2002, 2003; Liu et al. 2007) has begun to address this issue.”