Freezing points of H2SO4 aqueous solutions and formation of stratospheric ice clouds

Takeshi Ohtake

doi:10.3402/tellusb.v45i2.15588

Freezing points of H2SO4 aqueous solutions and formation of stratospheric ice clouds

Tellus B: Chemical and Physical Meteorology

Volume 45 (1993): Issue 2

By: Takeshi Ohtake

Open Access

|Jan 1993

Abstract

The freezing temperature of H₂SO₄ aqueous solutions as a function of concentration was experimentally measured in an investigation of the ice nucleation of natural H₂SO₄ mixed aerosols. Based on these measurements, it is suggested that the formation of ice crystals in cirrus and polar stratospheric clouds is the result of the condensation of water vapor and subsequent freezing of natural H₂SO₄ aerosols.

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