Zobrazeno 1 - 10
of 14 889
pro vyhledávání: '"A. Segers"'
Publikováno v:
Geoscientific Model Development, Vol 17, Pp 3765-3781 (2024)
Meteorological fields calculated by numerical weather prediction (NWP) models drive offline chemical transport models (CTMs) to solve the transport, chemical reactions, and atmospheric interaction over the geographical domain of interest. HARMONIE (H
Externí odkaz:
https://doaj.org/article/efbb991d597241f998ab93cc12bc276d
Publikováno v:
Geoscientific Model Development, Vol 16, Pp 4867-4882 (2023)
Statistical methods, particularly machine learning models, have gained significant popularity in air quality predictions. These prediction models are commonly trained using the historical measurement datasets independently collected at the environmen
Externí odkaz:
https://doaj.org/article/399d75c8d19049829e55a08e4a1c19f4
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 1641-1660 (2023)
Satellite-based aerosol optical depth (AOD) has gained popularity as a powerful data source for calibrating aerosol models and correcting model errors through data assimilation. However, simulated airborne particle mass concentrations are not directl
Externí odkaz:
https://doaj.org/article/41b1612c647a4016a692112cccbc8e21
Autor:
P. Bergamaschi, A. Segers, D. Brunner, J.-M. Haussaire, S. Henne, M. Ramonet, T. Arnold, T. Biermann, H. Chen, S. Conil, M. Delmotte, G. Forster, A. Frumau, D. Kubistin, X. Lan, M. Leuenberger, M. Lindauer, M. Lopez, G. Manca, J. Müller-Williams, S. O'Doherty, B. Scheeren, M. Steinbacher, P. Trisolino, G. Vítková, C. Yver Kwok
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 13243-13268 (2022)
We present a novel high-resolution inverse modelling system (“FLEXVAR”) based on FLEXPART-COSMO back trajectories driven by COSMO meteorological fields at 7 km×7 km resolution over the European COSMO-7 domain and the four-dimensional variational
Externí odkaz:
https://doaj.org/article/6b9546156a41423590d46cf5ba18fc4e
Publikováno v:
Geoscientific Model Development, Vol 15, Pp 7791-7807 (2022)
With the explosive growth of atmospheric data, machine learning models have achieved great success in air pollution forecasting because of their higher computational efficiency than the traditional chemical transport models. However, in previous stud
Externí odkaz:
https://doaj.org/article/ee20fc8e378f4db98ac0f297a237b702
Publikováno v:
Geoscientific Model Development, Vol 15, Pp 4555-4567 (2022)
Atmospheric inversions are used to constrain emissions of trace gases using atmospheric mole-fraction measurements. The four-dimensional variational (4DVAR) inversion approach allows optimization of emissions at a higher temporal and spatial resoluti
Externí odkaz:
https://doaj.org/article/d43757cc75bc4d3596ab67496d9914ed
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 6393-6410 (2022)
Last spring, super dust storms reappeared in East Asia after being absent for one and a half decades. The event caused enormous losses in both Mongolia and China. Accurate simulation of such super sandstorms is valuable for the quantification of heal
Externí odkaz:
https://doaj.org/article/b82c478c98ae4c0a82620411e969a92e
Autor:
S. van der Graaf, E. Dammers, A. Segers, R. Kranenburg, M. Schaap, M. W. Shephard, J. W. Erisman
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 951-972 (2022)
Atmospheric levels of ammonia (NH3) have substantially increased during the last century, posing a hazard to both human health and environmental quality. The atmospheric budget of NH3, however, is still highly uncertain due to an overall lack of obse
Externí odkaz:
https://doaj.org/article/de22971bf9b543438394e148722a299a
Publikováno v:
Geoscientific Model Development, Vol 14, Pp 5607-5622 (2021)
When calibrating simulations of dust clouds, both the intensity and the position are important. Intensity errors arise mainly from uncertain emission and sedimentation strengths, while position errors are attributed either to imperfect emission timin
Externí odkaz:
https://doaj.org/article/d64a7a9c1321482981a199ffbfb551e1
A stretched DNA molecule which is also under- or overwound, undergoes a buckling transition forming intertwined looped domains called plectonemes. Here we develop a simple theory that extends the two-phase model of stretched supercoiled DNA, allowing
Externí odkaz:
http://arxiv.org/abs/2410.23145
