Atmosphere beryllium-7 concentrations over the Pacific Ocean

Details Atmosphere beryllium-7 concentrations over the Pacific Ocean Atmosphere beryllium-7 concentrations over the Pacific Ocean

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21..561u&link_type=abstract

Geophysical Research Letters, Volume 21, Issue 7, p. 561-564

Physics

6

Atmospheric Composition And Structure: Aerosols And Particles, Atmospheric Composition And Structure: Geochemical Cycles, Atmospheric Composition And Structure: Troposphere-Composition And Chemistry

Scientific paper

Atmospheric 7Be is used as a tracer of stratospheric and upper tropospheric air, but most measurements of 7Be in surface air have been restricted to continental regions. We report here the extensive temporal and areal distribution of atmospheric aerosol 7Be concentration in the marine boundary layer. Measurements of 7Be have been carried out for the weekly filter samples collected at the Pacific island stations where are located between 30°N and 30°S in 1981 and 1985. High annual mean concentrations among the stations are observed at latitude between 20° and 30° in both hemispheres. There is little seasonal variation of 7Be at the nine stations. The lowest concentrations are found in the equatorial region due to relatively little subsidence of the air from the upper layer in this area and high precipitation within the ITCZ (intertropical convergence zone) resulting in rapid removal of the aerosol containing the 7Be. The significant correlation between the 7Be concentrations and the nitrate concentrations at the stations in the North Pacific supports the assumption that nitrate is transported from continental sources to the marine boundary layer through the free troposphere by the westerlies.

Affiliated with

Also associated with

No associations

Rating

Atmosphere beryllium-7 concentrations over the Pacific Ocean does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Atmosphere beryllium-7 concentrations over the Pacific Ocean, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Atmosphere beryllium-7 concentrations over the Pacific Ocean will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1256761