A. Pozzer, J. Pollmann, D. Taraborrelli, P. Jöckel, D. Helmig, P. Tans, ...
The atmospheric chemistry of C3-C5 alkanes has been incorporated in the atmospheric-chemistry general circulation model EMAC. Model output is compared with observations from the NOAA/ESRL GMD...
Helmig, D., Apel, E., Blake, D., Ganzeveld, L.N., Lefer, B.L., Meinardi, S., ...
Whole air drawn from four heights within the high elevation (3,340 m asl), deep, winter snowpack at Niwot Ridge, Colorado, were sampled into stainless steel canisters, and subsequently analyzed by...
Helmig, D., Apel, E., Blake, D., Ganzeveld, L.N., Lefer, B.L., Meinardi, S., ...
Whole air drawn from four heights within the high elevation (3,340 m asl), deep, winter snowpack at Niwot Ridge, Colorado, were sampled into stainless steel canisters, and subsequently analyzed by...
Sesquiterpene emissions from vegetation: a review (2008)
Duhl, T. R., Helmig, D., Guenther, A.
This literature review summarizes the environmental controls governing biogenic sesquiterpene (SQT) emissions and presents a compendium of numerous SQT-emitting plant species as well as the...
Sesquiterpene emissions from vegetation: a review (2008)
Duhl, T. R., Helmig, D., Guenther, A.
This literature review summarizes the environmental controls governing biogenic sesquiterpene (SQT) emissions and presents a compendium of numerous SQT-emitting plant species as well as the...
Sesquiterpene emissions from vegetation: a review (2008)
T. R. Duhl, D. Helmig, A. Guenther
This literature review summarizes the environmental controls governing biogenic sesquiterpene (SQT) emissions and presents a compendium of numerous SQT-emitting plant species as well as the...
A network for long-term measurements of volatile organic compounds within WMO/GAW. (2008)
Penkett, S., Oram, D., Helmig, D., Lewis, A., Steinbrecher, R., Plass-Dülmer, C., ...
Builtjes, P. [Hrsg.]
An overview of snow photochemistry: evidence, mechanisms and impacts (2007)
Grannas, A. M., Jones, A. E., Dibb, J., Ammann, M., Anastasio, C., Beine, H. J., ...
It has been shown that sunlit snow and ice plays an important role in processing atmospheric species. Photochemical production of a variety of chemicals has recently been reported to occur in...
An overview of snow photochemistry: evidence, mechanisms and impacts (2007)
Grannas, A. M., Jones, A. E., Dibb, J., Ammann, M., Anastasio, C., Beine, H. J., ...
It has been shown that sunlit snow and ice plays an important role in processing atmospheric species. Photochemical production of a variety of chemicals has recently been reported to occur in...
An overview of snow photochemistry: evidence, mechanisms and impacts (2007)
Grannas, A. M., Jones, A. E., Dibb, J., Ammann, M., Anastasio, C., Beine, H. J., ...
D. Helmig, L. Ganzeveld, T. Butler, S. J. Oltmans
Recent research on snowpack processes and atmosphere-snow gas exchange has demonstrated that chemical and physical interactions between the snowpack and the overlaying atmosphere have a substantial...
Water-side turbulence enhancement of ozone deposition to the ocean (2007)
C. W. Fairall, D. Helmig, L. Ganzeveld, J. Hare
A parameterization for the deposition velocity of an ocean-reactive atmospheric gas (such as ozone) is developed. The parameterization is based on integration of the turbulent-molecular transport...
Sesquiterpene emissions from vegetation: a review (2007)
Duhl, T. R., Helmig, D., Guenther, A.
This literature review summarizes the environmental controls governing biogenic sesquiterpene (SQT) emissions and presents a compendium of numerous SQT-emitting plant species as well as the...
Water-side turbulence enhancement of ozone deposition to the ocean (2007)
Fairall, C. W., Helmig, D., Ganzeveld, L., Hare, J.
A parameterization for the deposition velocity of an ocean-reactive atmospheric gas (such as ozone) is developed. The parameterization is based on integration of the turbulent-molecular transport...
Helmig, D., Ganzeveld, L., Butler, T., Oltmans, S. J.
Recent research on snowpack processes and atmosphere-snow gas exchange has demonstrated that chemical and physical interactions between the snowpack and the overlaying atmosphere have a substantial...
Sesquiterpene emissions from vegetation: a review (2007)
Duhl, T. R., Helmig, D., Guenther, A.
This literature review summarizes the environmental controls governing biogenic sesquiterpene (SQT) emissions and presents a compendium of numerous SQT-emitting plant species as well as the...
Water-side turbulence enhancement of ozone deposition to the ocean (2007)
Fairall, C. W., Helmig, D., Ganzeveld, L., Hare, J.
A parameterization for the deposition velocity of an ocean-reactive atmospheric gas (such as ozone) is developed. The parameterization is based on integration of the turbulent-molecular transport...
Helmig, D., Ganzeveld, L., Butler, T., Oltmans, S. J.
Recent research on snowpack processes and atmosphere-snow gas exchange has demonstrated that chemical and physical interactions between the snowpack and the overlaying atmosphere have a substantial...
An overview of snow photochemistry: evidence, mechanisms and impacts (2007)
Grannas, A. M., Jones, A. E., Dibb, J., Ammann, M., Anastasio, C., Beine, H. J., ...
An overview of snow photochemistry: evidence, mechanisms and impacts (2007)
Grannas, A. M., Jones, A. E., Dibb, J., Ammann, M., Anastasio, C., Beine, H. J., ...
It has been shown that sunlit snow and ice plays an important role in processing atmospheric species. Photochemical production of a variety of chemicals has recently been reported to occur in...
An overview of snow photochemistry: evidence, mechanisms and impacts (2007)
Grannas, A. M., Jones, A. E., Dibb, J., Ammann, M., Anastasio, C., Beine, H. J., ...
It has been shown that sunlit snow and ice plays an important role in processing atmospheric species. Photochemical production of a variety of chemicals has recently been reported to occur in...
An overview of snow photochemistry: evidence, mechanisms and impacts (2007)
Grannas, A. M., Jones, A. E., Dibb, J., Ammann, M., Anastasio, C., Beine, H. J., ...
It has been shown that sunlit snow and ice plays an important role in processing atmospheric species. Photochemical production of a variety of chemicals has recently been reported to occur in...
An overview of snow photochemistry: evidence, mechanisms and impacts (2007)
Grannas, A. M., Jones, A. E., Dibb, J., Ammann, M., Anastasio, C., Beine, H. J., ...
It has been shown that sunlit snow and ice plays an important role in processing atmospheric species. Photochemical production of a variety of chemicals has recently been reported to occur in...
An overview of snow photochemistry: evidence, mechanisms and impacts (2007)
A. M. Grannas, A. E. Jones, J. Dibb, M. Ammann, C. Anastasio, H. J. Beine, ...
It has been shown that sunlit snow and ice plays an important role in processing atmospheric species. Photochemical production of a variety of chemicals has recently been reported to occur in...
Sesquiterpene emissions from vegetation: a review (2007)
T. R. Duhl, D. Helmig, A. Guenther
This literature review summarizes the environmental controls governing biogenic sesquiterpene (SQT) emissions and presents a compendium of numerous SQT-emitting plant species as well as the...
An overview of snow photochemistry: evidence, mechanisms and impacts (2007)
A. M. Grannas, A. E. Jones, J. Dibb, M. Ammann, C. Anastasio, H. J. Beine, ...
It has been shown that sunlit snow and ice plays an important role in processing atmospheric species. Photochemical production of a variety of chemicals has recently been reported to occur in...
Helmig, D., Ganzeveld, L.N., Butler, T., Oltmans, S.
Recent research on snowpack processes and atmosphere-snow gas exchange has demonstrated that chemical and physical interactions between the snowpack and the overlaying atmosphere have a substantial...
Water-side turbulence enhancement of ozone deposition to the ocean (2007)
Fairall, C. W., Helmig, D., Ganzeveld, L.N., Hare, J.
A parameterization for the deposition velocity of an ocean-reactive atmospheric gas (such as ozone) is developed. The parameterization is based on integration of the turbulent-molecular transport...
Water-side turbulence enhancement of ozone deposition to the ocean (2006)
Fairall, C. W., Helmig, D., Ganzeveld, L., Hare, J.
A parameterization for the deposition velocity of an ocean-reactive atmospheric gas (such as ozone) is developed. The parameterization is based on integration of the turbulent-molecular transport...
Helmig, D., Ganzeveld, L., Butler, T., Oltmans, S. J.
Recent research on snowpack processes and atmosphere-snow gas exchange has demonstrated that chemical and physical interactions between the snowpack and the overlaying atmosphere have a substantial...
Water-side turbulence enhancement of ozone deposition to the ocean (2006)
Fairall, C. W., Helmig, D., Ganzeveld, L., Hare, J.
A parameterization for the deposition velocity of an ocean-reactive atmospheric gas (such as ozone) is developed. The parameterization is based on integration of the turbulent-molecular transport...
Helmig, D., Ganzeveld, L., Butler, T., Oltmans, S. J.
Recent research on snowpack processes and atmosphere-snow gas exchange has demonstrated that chemical and physical interactions between the snowpack and the overlaying atmosphere have a substantial...
D. Helmig, L. Ganzeveld, T. Butler, S. J. Oltmans
Recent research on snowpack processes and atmosphere-snow gas exchange has demonstrated that chemical and physical interactions between the snowpack and the overlaying atmosphere have a substantial...
Water-side turbulence enhancement of ozone deposition to the ocean (2006)
C. W. Fairall, D. Helmig, L. Ganzeveld, J. Hare
A parameterization for the deposition velocity of an ocean-reactive atmospheric gas (such as ozone) is developed. The parameterization is based on integration of the turbulent-molecular transport...
D. Helmig, L. Ganzeveld, T. Butler, S. J. Oltmans
Recent research on snowpack processes and atmosphere-snow gas exchange has demonstrated that chemical and physical interactions between the snowpack and the overlaying atmosphere have a substantial...
Helmig, D., Schwarzer, N., Steinhanses, J.
The invention relates to a switch setup for the monitoring of the flame of a flame ionization detector for gas chromatographs. According to the invention, the detector voltage of the flame ionization...
Müller, J., Iburg, J., Fritsche, U., Helmig, D., Klein, W., Kördel, W., ...
As part of recent research on the new type of forest decline physical and chemical investigations to characterize the forest atmosphere were performed in a heavily damaged spruce stand. By means of...
Volatile organic substances in a forest atmosphere. (1989)
Helmig, D., Klein, W., Müller, J.
Qualitative analyses of volatile organic substances were performed at a site in the Eggegebirge in North Rhine-Westfalia (West Germany) were severe spruce damage has been observed in the last decade....
Improvements in analysis of atmospheric peroxyacetyl nitrate -PAN-. (1989)
Helmig, D., Klein, W., Müller, J.
Common analytical techniques for PAN determination were modified in order to obtain a sensitive and automatic analysis system. PAN was synthesized by nitration of peracetic acid in hexane. The PAN...