Publikationen von G. Helas

Zeitschriftenartikel (38)

21.
Zeitschriftenartikel
Ebert, M., Weinbruch, S., Rausch, A., Gorzawski, G., Hoffmann, P., Wex, H. und Helas, G.: Complex refractive index of aerosols during LACE 98 as derived from the analysis of individual particles, Journal of Geophysical Research, 107(D21), doi:10.1029/2000JD000195, 2002.
22.
Zeitschriftenartikel
Formenti, P., Winkler, H., Fourie, P., Piketh, S., Makgopa, B., Helas, G. und Andreae, M. O.: Aerosol optical depth over a remote semi-arid region of South Africa from spectral measurements of the daytime solar extinction and the nighttime stellar extinction, Atmospheric Research, 62(1-2), 11–32 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-9108-E, 2002.
23.
Zeitschriftenartikel
Ebert, M., Weinbruch, S., Rausch, A., Gorzawski, G., Wex, H., Hoffmann, P. und Helas, G.: The complex refractive index of aerosols during LACE 98 as derived from the analysis of indivi-dual particles, Journal of Aerosol Science, 32, (Suppl), 683–684 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-93DE-D, 2001.
24.
Zeitschriftenartikel
Gatebe, C. K., Tyson, D., Annegarn, H. J., Helas, G., Kinyua, A. M. und Piketh, S. J.: Characterization and transport of aerosols over equatorial eastern Africa, Global Biogeochemical Cycles, 15, 633–672 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-9286-C, 2001.
25.
Zeitschriftenartikel
Kituyi, E., Marufu, L., Huber, B., Wandiga, S. O., Jumba, I. O., Andreae, M. O. und Helas, G.: Biofuel consumption rates and patterns in Kenya, Biomass and Bioenergy, 20, 83–99 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-9224-6, 2001.
26.
Zeitschriftenartikel
Kituyi, E., Marufu, L., Wandiga, S. O., Jumba, I. O., Andreae, M. O. und Helas, G.: Biofuel availability and domestic use patterns in Kenya, Biomass and Bioenergy, 20, 71–82 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-9222-A, 2001.
27.
Zeitschriftenartikel
Kituyi, E., Marufu, L., Wandiga, S. O., Jumba, I. O., Andreae, M. O. und Helas, G.: Carbon monoxide and nitric oxide from biofuel fires in Kenya, Energy Conversion and Management, 42, 1517–1542 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-9226-2, 2001.
28.
Zeitschriftenartikel
Lange, L., Hoor, P., Helas, G., Fischer, H., Brunner, D., Scheeren, B., Williams, J., Wong, S., Wohlfrom, K.-H., Arnold, F., Ström, J., Krejci, R., Lelieveld, J. und Andreae, M. O.: Detection of lightning-produced NO in the midlatitude upper troposphere during STREAM 1998, Journal of Geophysical Research, 106(D21), 27,777–27,786 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-922E-1, 2001.
29.
Zeitschriftenartikel
Rausch, A., Trautmann, T., Weinbruch, S. und Helas, G.: Calculation of scattering and absorption of light by irregular shaped and mixed particles, Journal of Aerosol Science, 32, (Suppl), 419–420 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-927C-4, 2001.
30.
Zeitschriftenartikel
Kirkman, G. A., Piketh, S. J., Andreae, M. O., Annegarn, H. J. und Helas, G.: Distribution of aerosols, ozone and carbon monoxide over southern Africa, South African Journal of Science, 96, 423–432 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-9440-7, 2000.
31.
Zeitschriftenartikel
Marufu, L., Dentener, F., Lelieveld, J., Andreae, M. O. und Helas, G.: Photochemistry of the African troposphere: The influence of biomass burning emissions, Journal of Geophysical Research, 105, 14,513–14,530 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-9454-C, 2000.
32.
Zeitschriftenartikel
Fischer, H., Brunner, D., Harris, G. W., Helas, G., Hoor, P., Lange, L., Lelieveld, J., Schiller, C. L., Siegmund, P., Williams, J. und Wong, S.: Trace gas distribution in the tropopause region: First results from the STREAM-98 summer campaign in Timmins, Canada, Geophysical Research Abstracts, 1 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-97B8-1, 1999.
33.
Zeitschriftenartikel
Gatebe, C. K., Tyson, P. D., Annegarn, H., Piketh, S. und Helas, G.: A seasonal air transport climatology for Kenya, Journal of Geophysical Research, 104, 14237–14244 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-964A-3, 1999.
34.
Zeitschriftenartikel
Gorzawski, G., Rausch, A., Ebert, M., Weinbruch, S., Hoffmann, P. und Helas, G.: Elemental and phase composition of aerosols sampled during LACE 98, Journal of Aerosol Science, 30S, 517–518 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-96AA-9, 1999.
35.
Zeitschriftenartikel
Kettle, A. J., Andreae, M. O., Amouroux, D., Andreae, T. W., Bates, T. S., Berresheim, H., Bingemer, H., Boniforti, R., Curran, M. A. J., DiTullio, G. R., Helas, G., Jones, G. B., Keller, M. D., Kiene, R. P., Leck, C., Levasseur, M., Maspero, M., Matrai, P., McTaggart, A. R., Mihalopoulos, N., Nguyen, B. C., Novo, A., Putaud, J. P., Rapsomanikis, S., Roberts, G., Schebeske, G., Sharma, S., Simó, R., Staubes, R., Turner, S. und Uher, G.: A global database of sea surface dimethylsulfide (DMS) measurements and a simple model to predict sea surface DMS as a function of latitude, longitude and month, Global Biogeochemical Cycles, 13(2), 399–444 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-9600-7, 1999.
36.
Zeitschriftenartikel
Marufu, L., Ludwig, J., Andreae, M. O., Lelieveld, J. und Helas, G.: Spatial and temporal variation in biofuel consumption rates and patterns in Zimbabwe: Implications for atmospheric trace gas emission, Biomass and Bioenergy, 16, 311–332 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-9616-8, 1999.
37.
Zeitschriftenartikel
Rausch, A., Ebert, M., Gorzawski, G., Weinbruch, S., Hoffmann, P. und Helas, G.: High-resolution scanning electron microscopy of individual aerosol particles obtained during LACE 98, Journal of Aerosol Science, 30S, 515–516 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-96EE-4, 1999.
38.
Zeitschriftenartikel
Wentzel, M., Annegarn, H. J., Helas, G., Weinbruch, S., Balogh, A. G. und Sithole, J. S.: Giant dendritic carbonaceous particles in Soweto aerosols, South African Journal of Science, 95, 141–145 [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-96DA-E, 1999.

Buchkapitel (1)

39.
Buchkapitel
Kituyi, E., Wandiga, S. O., Andreae, M. O. und Helas, G.: Biomass burning in Africa: role in atmospheric change and opportunities for emission mitigation, in Climate Change and Africa, herausgegeben von P. S. Low, S. 79–89, Cambridge University Press, New York. [online] Available from: http://hdl.handle.net/11858/00-001M-0000-0014-8B80-B, 2005.
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