CCN Measurements over the Ocean

William P. Elliott School of Oceanography, Oregon Sate University, Corvallis 97331

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Richard Egami School of Oceanography, Oregon Sate University, Corvallis 97331

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Abstract

Shipboard measurements of CCN show the slope of the CCN spectra to be in agreement with other estimates in marine air from aircraft. Concentrations of CCN over the open ocean are quite low with estimates of a few tens per cubic entimeter. Only a few percent of the CCN were particles containing chlorides.

The Spectra of CCN in coastal waters exhibit slopes more like marine air but number concentrations more like continental air. The reason for this are not entirely clear.

Abstract

Shipboard measurements of CCN show the slope of the CCN spectra to be in agreement with other estimates in marine air from aircraft. Concentrations of CCN over the open ocean are quite low with estimates of a few tens per cubic entimeter. Only a few percent of the CCN were particles containing chlorides.

The Spectra of CCN in coastal waters exhibit slopes more like marine air but number concentrations more like continental air. The reason for this are not entirely clear.

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