Freezing of water droplets colliding with kaolinite particles

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Standard

Freezing of water droplets colliding with kaolinite particles. / Svensson, Erik Anders; Delval, Christophe Eric Ludovic; Freiherr von Und zu Hessberg, P J H; Johnson, Matthew Stanley; Pettersson, J. B. C.

I: Atmospheric Chemistry and Physics, Bind 9, Nr. 13, 27.01.2009, s. 4295-4300.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Svensson, EA, Delval, CEL, Freiherr von Und zu Hessberg, PJH, Johnson, MS & Pettersson, JBC 2009, 'Freezing of water droplets colliding with kaolinite particles', Atmospheric Chemistry and Physics, bind 9, nr. 13, s. 4295-4300.

APA

Svensson, E. A., Delval, C. E. L., Freiherr von Und zu Hessberg, P. J. H., Johnson, M. S., & Pettersson, J. B. C. (2009). Freezing of water droplets colliding with kaolinite particles. Atmospheric Chemistry and Physics, 9(13), 4295-4300.

Vancouver

Svensson EA, Delval CEL, Freiherr von Und zu Hessberg PJH, Johnson MS, Pettersson JBC. Freezing of water droplets colliding with kaolinite particles. Atmospheric Chemistry and Physics. 2009 jan. 27;9(13):4295-4300.

Author

Svensson, Erik Anders ; Delval, Christophe Eric Ludovic ; Freiherr von Und zu Hessberg, P J H ; Johnson, Matthew Stanley ; Pettersson, J. B. C. / Freezing of water droplets colliding with kaolinite particles. I: Atmospheric Chemistry and Physics. 2009 ; Bind 9, Nr. 13. s. 4295-4300.

Bibtex

@article{70c0727005c911df825d000ea68e967b,
title = "Freezing of water droplets colliding with kaolinite particles",
abstract = "Contact freezing of single supercooled water droplets colliding with kaolinite dust particleshas been investigated. The experiments were performed with droplets levitatedin an electrodynamic balance at temperatures from 240 to 268 K. Under dry conditionsfreezing 5 was observed to occur below 249 K, while a freezing threshold of 267 K wasobserved at high relative humidity. The effect of relative humidity is attributed to aninfluence on the contact freezing process for the kaolinite-water droplet system, andit is not related to the lifetime of the droplets in the electrodynamic balance. Freezingprobabilities per collision were derived assuming that collisions at the lowest temper10ature employed had a probability of unity. The data recorded at high humidity shouldbe most relevant to atmospheric conditions, and the results indicate that parameterizationscurrently used in modelling studies to describe freezing rates are appropriate forkaolinite aerosol particles. Mechanisms for contact freezing are briefly discussed.",
author = "Svensson, {Erik Anders} and Delval, {Christophe Eric Ludovic} and {Freiherr von Und zu Hessberg}, {P J H} and Johnson, {Matthew Stanley} and Pettersson, {J. B. C.}",
year = "2009",
month = jan,
day = "27",
language = "English",
volume = "9",
pages = "4295--4300",
journal = "Atmospheric Chemistry and Physics",
issn = "1680-7316",
publisher = "Copernicus GmbH",
number = "13",

}

RIS

TY - JOUR

T1 - Freezing of water droplets colliding with kaolinite particles

AU - Svensson, Erik Anders

AU - Delval, Christophe Eric Ludovic

AU - Freiherr von Und zu Hessberg, P J H

AU - Johnson, Matthew Stanley

AU - Pettersson, J. B. C.

PY - 2009/1/27

Y1 - 2009/1/27

N2 - Contact freezing of single supercooled water droplets colliding with kaolinite dust particleshas been investigated. The experiments were performed with droplets levitatedin an electrodynamic balance at temperatures from 240 to 268 K. Under dry conditionsfreezing 5 was observed to occur below 249 K, while a freezing threshold of 267 K wasobserved at high relative humidity. The effect of relative humidity is attributed to aninfluence on the contact freezing process for the kaolinite-water droplet system, andit is not related to the lifetime of the droplets in the electrodynamic balance. Freezingprobabilities per collision were derived assuming that collisions at the lowest temper10ature employed had a probability of unity. The data recorded at high humidity shouldbe most relevant to atmospheric conditions, and the results indicate that parameterizationscurrently used in modelling studies to describe freezing rates are appropriate forkaolinite aerosol particles. Mechanisms for contact freezing are briefly discussed.

AB - Contact freezing of single supercooled water droplets colliding with kaolinite dust particleshas been investigated. The experiments were performed with droplets levitatedin an electrodynamic balance at temperatures from 240 to 268 K. Under dry conditionsfreezing 5 was observed to occur below 249 K, while a freezing threshold of 267 K wasobserved at high relative humidity. The effect of relative humidity is attributed to aninfluence on the contact freezing process for the kaolinite-water droplet system, andit is not related to the lifetime of the droplets in the electrodynamic balance. Freezingprobabilities per collision were derived assuming that collisions at the lowest temper10ature employed had a probability of unity. The data recorded at high humidity shouldbe most relevant to atmospheric conditions, and the results indicate that parameterizationscurrently used in modelling studies to describe freezing rates are appropriate forkaolinite aerosol particles. Mechanisms for contact freezing are briefly discussed.

M3 - Journal article

VL - 9

SP - 4295

EP - 4300

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

SN - 1680-7316

IS - 13

ER -

ID: 17111716