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A 750 year ice core record of past biogenic emissions from Siberian boreal forests
Author(s) -
Eichler Anja,
Brütsch Sabina,
Olivier Susanne,
Papina Tatyana,
Schwikowski Margit
Publication year - 2009
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2009gl038807
Subject(s) - ice core , environmental science , boreal , taiga , climate change , amazon rainforest , physical geography , atmospheric sciences , climatology , geology , geography , ecology , forestry , oceanography , archaeology , biology
Emissions from forests represent an important source of gaseous precursors of aerosols that can significantly alter the regional radiation balance. Long‐term records of biogenic emissions are available for Northern America and the Amazon Basin, whereas the historical development of emissions from Siberian forests, comprising about 20% of the world's forested area, is unknown so far. Here we investigate ice core ammonium and formate records for the last 750 years, representing biogenic emissions from boreal Siberian forests in the pre‐industrial era. Biogenic emissions were found to be closely related to changes in temperature following variations in solar activity. In addition, anthropogenic emissions have caused a strong increase of the ammonium concentrations and a drop of the formate concentrations in the last 60 years.