VOC concentrations: annual cycle in boreal forest

نویسندگان

  • T. M. Ruuskanen
  • R. Taipale
  • J. Rinne
  • M. K. Kajos
  • H. Hakola
  • M. Kulmala
چکیده

Quantitative long-term measurements of VOC concentrations by PTR-MS: annual cycle at a boreal forest site T. M. Ruuskanen, R. Taipale, J. Rinne, M. K. Kajos, H. Hakola, and M. Kulmala University of Helsinki, Department of Physics, P.O. Box 68, 00014 University of Helsinki, Finland Finnish Meteorological Institute, P.O. Box 503, 00101 Helsinki, Finland Received: 19 September 2008 – Accepted: 20 October 2008 – Published: 6 January 2009 Correspondence to: T. M. Ruuskanen ([email protected]) Published by Copernicus Publications on behalf of the European Geosciences Union.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Finnish Meteorological Institute Contributions No. 72 Development of Biogenic Voc Emission Inventories for the Boreal Forest

The volatile organic compounds (VOCs) emitted by vegetation, especially forests, can affect local and regional atmospheric photochemistry through their reactions with atmospheric oxidants. Their reaction products may also participate in the formation and growth of new particles which affect the radiation balance of the atmosphere, and thus climate, by scattering and absorbing shortwave and long...

متن کامل

Biogenic volatile organic compound (VOC) emissions from forests in Finland

We present model estimates of biogenic volatile organic compound (VOC) emissions from the forests in Finland. The emissions were calculated for the years 1995–1997 using the measured isoprene and monoterpene emission factors of boreal tree species together with detailed satellite land cover information and meteorological data. The three-year average emission is 319 kilotonnes per annum, which i...

متن کامل

Day-time concentrations of biogenic volatile organic compounds in a boreal forest canopy and their relation to environmental and biological factors

Atmospheric concentrations of methanol, acetaldehyde, acetone, isoprene and monoterpenes were measured using PTR-MS (proton transfer reaction mass spectrometry) in a boreal forest site in Hyytiälä, Finland (6151 N, 2417 E). The concentration measurements were made in the upper canopy of a Scots pine forest during 6 June, 2006–31 August, 2007. Meteorological variables such as temperature and pho...

متن کامل

A Critical Evaluation of Fire Suppression Effects in the Boreal Forest of Ontario

Although fire suppression is widely believed to have changed the “natural” fire regime in the boreal forest, empirical evidence for this effect is limited and usually involves a comparison of fire sizes, average annual area burned, and fire cycle between areas with and without fire suppression. We critically evaluate this empirical evidence and discuss problems with untested assumptions, data q...

متن کامل

Carbon, Trace Gas, and Particulate Emissions from Wildfires in the Boreal Regions of North America

Large wildfires have a considerable impact on the atmospheric concentrations of CO2, CO, O3, NOx, and CH4 across North America. Carbon releases can be as high as 4 to 8 kg C-m per fire event. These emissions significantly affect concentrations far downwind. With funding from NASA, the Joint Fire Science Program, NSF, and the Canadian Government, US and Canadian researchers have been developing ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009