NDLI: Cloud condensation nuclei in fire iii

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Cloud condensation nuclei in fire iii

Content Provider	NASA Technical Reports Server (NTRS)
Author	Hudson, James G.
Copyright Year	2002
Description	Yum and Hudson showed that the springtime Arctic aerosol is probably a result of long-range transport at high altitudes. Scavenging of particles by clouds reduces the low level concentrations by a factor of 3. This produces a vertical gradient in particle concentrations when low-level clouds are present. Concentrations are uniform with height when clouds are not present. Low-level CCN (cloud condensation nuclei) spectra are similar to those in other maritime areas as found by previous projects including FIRE 1 and ASTEX, which were also supported on earlier NASA-FIRE grants. Wylie and Hudson carried this work much further by comparing the CCN spectra observed during ACE with back trajectories of air masses and satellite photographs. This showed that cloud scavenging reduces CCN concentrations at all altitudes over the springtime Arctic, with liquid clouds being more efficient scavengers than frozen clouds. The small size of the Arctic Ocean seems to make it more susceptible to continental and thus anthropogenic aerosol influences than any of the other larger oceans.
File Size	107089
Page Count	2
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20020076393
Archival Resource Key	ark:/13960/t59d1wm5q
Language	English
Publisher Date	2002-09-17
Access Restriction	Open
Subject Keyword	Environment Pollution Satellite Imagery Condensation Nuclei Spectrum Analysis Aerosols Clouds Meteorology Satellite-borne Photography Drops Liquids Arctic Ocean Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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