Accession Number:

ADA030859

Title:

Field Measurements with a Cloud Condensation Nucleus Spectrometer in Marine Fogs

Descriptive Note:

Annual progress rept.

Corporate Author:

DENVER RESEARCH INST CO CLOUD PHYSICS LAB

Personal Author(s):

Report Date:

1975-12-01

Pagination or Media Count:

31.0

Abstract:

During the last one-year reporting period, a field version of this laboratorys Cloud Condensation Nucleus CCN Spectrometer capable on continuously monitoring and displaying in real-time the activation spectrum of fog and cloud nuclei--was fabricated and field-tested. The tests proved it to be a dependable field instrument. In July, 1975, the CCN Spectrometer was installed aboard U. S. Naval Ship Hayes for measuring the characteristics of aerosols that participated in marine fog formation. The spectrum measurement were made during a three-week-long cruise aboard the ship off the coasts of Nova Scotia and Newfoundland. Some two thousand spectra were measured while approaching the fog, in the fog, and getting out of the fog. A variety of fog conditions were encountered in the field. Field measurements demonstrate that the fog nuclei spectrum in the supersaturation range 0.15-1.2 undergoes a marked change at the fog boundaries.

Subject Categories:

  • Atmospheric Physics
  • Meteorology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE