Zobrazeno 1 - 10
of 35
pro vyhledávání: '"M. D. Andrés Hernández"'
Autor:
M. George, M. D. Andrés Hernández, V. Nenakhov, Y. Liu, J. P. Burrows, B. Bohn, E. Förster, F. Obersteiner, A. Zahn, T. Harlaß, H. Ziereis, H. Schlager, B. Schreiner, F. Kluge, K. Bigge, K. Pfeilsticker
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 7799-7822 (2023)
In this study, airborne measurements of the sum of hydroperoxyl (HO2) and organic peroxy (RO2) radicals that react with nitrogen monoxide (NO) to produce nitrogen dioxide (NO2), coupled with actinometry and other key trace gases measurements, have be
Externí odkaz:
https://doaj.org/article/86fdb963c15046ee939fcdb3adbce414
Autor:
C.-Y. Lin, W.-C. Chen, Y.-Y. Chien, C. C. K. Chou, C.-Y. Liu, H. Ziereis, H. Schlager, E. Förster, F. Obersteiner, O. O. Krüger, B. A. Holanda, M. L. Pöhlker, K. Kaiser, J. Schneider, B. Bohn, K. Pfeilsticker, B. Weyland, M. D. Andrés Hernández, J. P. Burrows
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 2627-2647 (2023)
The Indochina biomass burning (BB) season in springtime has a substantial environmental impact on the surrounding areas in Asia. In this study, we evaluated the environmental impact of a major long-range BB transport event on 19 March 2018 (a flight
Externí odkaz:
https://doaj.org/article/68d90b699be942f287dd18e8bf7d883b
Autor:
P. T. M. Ha, Y. Kanaya, F. Taketani, M. D. Andrés Hernández, B. Schreiner, K. Pfeilsticker, K. Sudo
Publikováno v:
Geoscientific Model Development, Vol 16, Pp 927-960 (2023)
Nitrous acid (HONO) is an important atmospheric gas given its contribution to the cycles of NOx and HOx, but its role in global atmospheric photochemistry is not fully understood. This study implemented three pathways of HONO formation in the chemist
Externí odkaz:
https://doaj.org/article/4c9326950e9a45db99d854c9268d9f44
Autor:
O. O. Krüger, B. A. Holanda, S. Chowdhury, A. Pozzer, D. Walter, C. Pöhlker, M. D. Andrés Hernández, J. P. Burrows, C. Voigt, J. Lelieveld, J. Quaas, U. Pöschl, M. L. Pöhlker
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 8683-8699 (2022)
The abrupt reduction in human activities during the first lockdown of the COVID-19 pandemic created unprecedented atmospheric conditions. To quantify the changes in lower tropospheric air pollution, we conducted the BLUESKY aircraft campaign and meas
Externí odkaz:
https://doaj.org/article/9ed69de773e84120a8c79e68c9bbbcac
Autor:
M. D. Andrés Hernández, A. Hilboll, H. Ziereis, E. Förster, O. O. Krüger, K. Kaiser, J. Schneider, F. Barnaba, M. Vrekoussis, J. Schmidt, H. Huntrieser, A.-M. Blechschmidt, M. George, V. Nenakhov, T. Harlass, B. A. Holanda, J. Wolf, L. Eirenschmalz, M. Krebsbach, M. L. Pöhlker, A. B. Kalisz Hedegaard, L. Mei, K. Pfeilsticker, Y. Liu, R. Koppmann, H. Schlager, B. Bohn, U. Schumann, A. Richter, B. Schreiner, D. Sauer, R. Baumann, M. Mertens, P. Jöckel, M. Kilian, G. Stratmann, C. Pöhlker, M. Campanelli, M. Pandolfi, M. Sicard, J. L. Gómez-Amo, M. Pujadas, K. Bigge, F. Kluge, A. Schwarz, N. Daskalakis, D. Walter, A. Zahn, U. Pöschl, H. Bönisch, S. Borrmann, U. Platt, J. P. Burrows
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 5877-5924 (2022)
Megacities and other major population centres (MPCs) worldwide are major sources of air pollution, both locally as well as downwind. The overall assessment and prediction of the impact of MPC pollution on tropospheric chemistry are challenging. The p
Externí odkaz:
https://doaj.org/article/c5b4bf086bc1409d99f560f466a4cc9e
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 2577-2600 (2020)
Hydroperoxyl (HO2) and organic peroxy (RO2) radicals have an unpaired spin and are highly reactive free radicals. Measurements of the sum of HO2 and RO2 provide unique information about the chemical processing in an air mass. This paper describes the
Externí odkaz:
https://doaj.org/article/922a7181ff924addac64157f63285671
Publikováno v:
Atmospheric Measurement Techniques, Vol 7, Iss 5, Pp 1245-1257 (2014)
Development of an airborne instrument for the determination of peroxy radicals (PeRCEAS – peroxy radical chemical enhancement and absorption spectroscopy) is reported. Ambient peroxy radicals (HO2 and RO2, R being an organic chain) are converted to
Externí odkaz:
https://doaj.org/article/7ca3fbdfb61c486da3737acebf1d0abe
Autor:
M. D. Andrés-Hernández, D. Kartal, J. N. Crowley, V. Sinha, E. Regelin, M. Martínez-Harder, V. Nenakhov, J. Williams, H. Harder, H. Bozem, W. Song, J. Thieser, M. J. Tang, Z. Hosaynali Beigi, J. P. Burrows
Publikováno v:
Atmospheric Chemistry and Physics, Vol 13, Iss 11, Pp 5731-5749 (2013)
Peroxy radicals were measured by a PeRCA (Peroxy Radical Chemical Amplifier) instrument in the boundary layer during the DOMINO (Diel Oxidant Mechanisms In relation to Nitrogen Oxides) campaign at a coastal, forested site influenced by urban-industri
Externí odkaz:
https://doaj.org/article/538497c22d0a4220ab6120476d6bae14
Autor:
Akihiro Hori, Isamu Morino, Anke Roiger, Hirofumi Ohyama, M. D. Andrés-Hernández, Charles C.-K. Chou, Tsuneo Matsunaga, Matthäus Kiel, Matthias Frey, Joshua P. DiGangi, Pao K. Wang, Nicholas M. Deutscher, Sally E. Pusede, Yonghoon Choi, Osamu Uchino, Glenn S. Diskin, Voltaire A. Velazco, John P. Burrows, Alina Fiehn, Michael Lichtenstern, Hans Schlager, Theresa Klausner, Gerry Bagtasa
Publikováno v:
Atmospheric Measurement Techniques. 13:5149-5163
Column-averaged dry-air mole fractions of carbon dioxide (XCO2) and methane (XCH4) measured by a solar viewing portable Fourier transform spectrometer (FTS, EM27/SUN) have been characterized and validated by comparison using in situ profile measureme
Autor:
H. Ohyama, I. Morino, V. A. Velazco, T. Klausner, G. Bagtasa, M. Kiel, M. Frey, A. Hori, O. Uchino, T. Matsunaga, N. M. Deutscher, J. P. DiGangi, Y. Choi, G. S. Diskin, S. E. Pusede, A. Fiehn, A. Roiger, M. Lichtenstern, H. Schlager, P. K. Wang, C. C.-K. Chou, M. D. Andrés-Hernández, J. P. Burrows
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 5149-5163 (2020)
Column-averaged dry-air mole fractions of carbon dioxide (XCO2) and methane (XCH4) measured by a solar viewing portable Fourier transform spectrometer (FTS, EM27/SUN) have been characterized and validated by comparison using in situ profile measureme