Zobrazeno 1 - 10
of 11 163
pro vyhledávání: '"A. Lenzen"'
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 10921-10945 (2024)
The El Niño–Southern Oscillation (ENSO) is a major driver of interannual variability in both tropical latitudes and midlatitudes and has been found to have a strong impact on the distribution of tropospheric ozone in the tropical Pacific in satell
Externí odkaz:
https://doaj.org/article/d121919803d24c6399baa2110c9747f9
Autor:
R. B. Pierce, M. Harkey, A. Lenzen, L. M. Cronce, J. A. Otkin, J. L. Case, D. S. Henderson, Z. Adelman, T. Nergui, C. R. Hain
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 9613-9635 (2023)
We evaluate two high-resolution Lake Michigan air quality simulations during the 2017 Lake Michigan Ozone Study campaign. These air quality simulations employ identical chemical configurations but use different input meteorology. The AP-XM configurat
Externí odkaz:
https://doaj.org/article/2f7cd3a14f1f4e418866ac9738fb775a
Autor:
J. A. Otkin, L. M. Cronce, J. L. Case, R. B. Pierce, M. Harkey, A. Lenzen, D. S. Henderson, Z. Adelman, T. Nergui, C. R. Hain
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 7935-7954 (2023)
High-resolution simulations were performed to assess the impact of different parameterization schemes, surface datasets, and analysis nudging on lower-tropospheric conditions near Lake Michigan. Simulations were performed where climatological or coar
Externí odkaz:
https://doaj.org/article/65e1f604e0474ee48ff11101ba43561a
Autor:
J. D. East, B. H. Henderson, S. L. Napelenok, S. N. Koplitz, G. Sarwar, R. Gilliam, A. Lenzen, D. Q. Tong, R. B. Pierce, F. Garcia-Menendez
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 15981-16001 (2022)
Satellite observations of tropospheric NO2 columns can provide top-down observational constraints on emissions estimates of nitrogen oxides (NOx). Mass-balance-based methods are often applied for this purpose but do not isolate near-surface emissions
Externí odkaz:
https://doaj.org/article/f6ae404580744ae483ce0a2772cd6012
Autor:
A. Kumar, R. B. Pierce, R. Ahmadov, G. Pereira, S. Freitas, G. Grell, C. Schmidt, A. Lenzen, J. P. Schwarz, A. E. Perring, J. M. Katich, J. Hair, J. L. Jimenez, P. Campuzano-Jost, H. Guo
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 10195-10219 (2022)
We use the Weather Research and Forecasting with Chemistry (WRF-Chem) model with new implementations of GOES-16 wildfire emissions and plume rise based on fire radiative power (FRP) to interpret aerosol observations during the 2019 NASA-NOAA FIREX-AQ
Externí odkaz:
https://doaj.org/article/36c490c3ed6744a7a4dc9259d244ca1f
We study algebraic shifting of uniform hypergraphs and finite simplicial complexes in the exterior algebra with respect to matrices which are not necessarily generic. Several questions raised by Kalai (2002) are addressed. For instance, it turns out
Externí odkaz:
http://arxiv.org/abs/2410.24044
Autor:
Lenzen, Christoph, Wenning, Sophie
A long-standing open question is which graph class is the most general one permitting constant-time constant-factor approximations for dominating sets. The approximation ratio has been bounded by increasingly general parameters such as genus, arboric
Externí odkaz:
http://arxiv.org/abs/2408.12998
Constrained Forest Problems (CFPs) as introduced by Goemans and Williamson in 1995 capture a wide range of network design problems with edge subsets as solutions, such as Minimum Spanning Tree, Steiner Forest, and Point-to-Point Connection. While ind
Externí odkaz:
http://arxiv.org/abs/2407.14536
Autor:
C.-K. Liang, J. J. West, R. A. Silva, H. Bian, M. Chin, Y. Davila, F. J. Dentener, L. Emmons, J. Flemming, G. Folberth, D. Henze, U. Im, J. E. Jonson, T. J. Keating, T. Kucsera, A. Lenzen, M. Lin, M. T. Lund, X. Pan, R. J. Park, R. B. Pierce, T. Sekiya, K. Sudo, T. Takemura
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 10497-10520 (2018)
Ambient air pollution from ozone and fine particulate matter is associated with premature mortality. As emissions from one continent influence air quality over others, changes in emissions can also influence human health on other continents. We es
Externí odkaz:
https://doaj.org/article/73fae158840a4e6cb9a7c0ddc8413349
Autor:
Lenzen, Fabian
Minimal free resolutions and minimal free presentations are standard ways to represent the isomorphism type of a persistence module in software. This description is a multi-parameter generalization of the barcode known in one-parameter persistence. A
Externí odkaz:
http://arxiv.org/abs/2401.06008