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Clouds and beryllium-7
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
Uppsala University, Disciplinary Domain of Science and Technology, För teknisk-naturvetenskapliga fakulteten gemensamma enheter, Tandem Laboratory.
2010 (English)In: Nuclear Instruments and Methods in Physics Reseach B, ISSN 0168-583X, Vol. 268, no 7-8, 1129-1134 p.Article in journal (Refereed) Published
Abstract [en]

We present a 10-year record of 10 different cloud cover types at three different locations in Scandinavia together with Be-7 surface concentration data. The aim is to estimate the degree of correlation, if any, between various cloud types at different latitudes and measured Be-7 concentrations. The study matches weekly Be-7 data to cloud raster data from high resolution multispectral satellite sensors recorded on a monthly basis between 1991 and 2001. The results are presented as a Be-7 correlation coefficient and show a consistent pattern with small variations across the latitudes and rather large variations between the different cloud classes. The strongest coherence is inverse and associated with Be-7 and high-level clouds (cumulonimbus and nimbostratus), generally, at low latitudes while mid-level clouds (altocumulus, altostratus and cumulus congestus) show little (insignificant) correlation. Despite variable correlation trends, merging of the two data sets has proven valuable in order to understand aerosols-Be-7 (and likely Be-10) correlation to different cloud types.

Place, publisher, year, edition, pages
2010. Vol. 268, no 7-8, 1129-1134 p.
Keyword [en]
Cloud cover, Beryllium, Cosmogenic isotopes, SCANDIA model
National Category
Physical Sciences Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-136902DOI: 10.1016/j.nimb.2009.10.116ISI: 000277462300111OAI: oai:DiVA.org:uu-136902DiVA: diva2:377598
Available from: 2010-12-14 Created: 2010-12-14 Last updated: 2010-12-14Bibliographically approved

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