Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Melitta Fiebig-Wittmaack"'
Publikováno v:
Journal of Computational and Applied Mathematics. 236(6):1435-1441
The convergence of many iterative procedures, in particular that of the conjugate gradient method, strongly depends on the condition number of the linear system to be solved. In cases with a large condition number, therefore, preconditioning is often
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7cac8a64b2f2e08056e5a56ea4a14b7f
Autor:
Antonio Ibacache, César Perez, Melitta Fiebig-Wittmaack, Orlando Astudillo, Virginia Wittrock, Elaine Wheaton
Publikováno v:
Climatic Change. 111:819-833
Little is known about climate change and its impacts for the arid coastal and mountainous regions in northern Chile. The Elqui river basin, part of the Norte Chico of Chile between 27oS and 33oS latitude, is located south of the hyper-arid Atacama de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b221200b485a7e339123129543a4966
https://doi.org/10.1007/s10584-011-0200-z
https://doi.org/10.1007/s10584-011-0200-z
Autor:
Samiro Khodayar, Sonia Montecinos, Norbert Kalthoff, Melitta Fiebig-Wittmaack, I. Bischoff-Gauß
Publikováno v:
BOUNDARY-LAYER METEOROLOGY
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
The boundary layer of the Elqui valley in the arid north of Chile exhibits several interesting phenomena, such as a very shallow convective boundary layer (CBL) during the day. In the morning, warming is observed in and above the CBL, while the humid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b6e87f051ac7d3bd6bd7eead05a7f09
https://doi.org/10.1007/s10546-008-9293-y
https://doi.org/10.1007/s10546-008-9293-y
Publikováno v:
Meteorology and Atmospheric Physics. 99:181-198
The boundary-layer structure of the Elqui Valley is investigated, which is situated in the arid north of Chile and extends from the Pacific Ocean in the west to the Andes in the east. The climate is dominated by the south-eastern Pacific subtropical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8a68aa893a17b0cd1aefb4a449522f5
https://doi.org/10.1007/s00703-007-0274-3
https://doi.org/10.1007/s00703-007-0274-3
Autor:
M. Uriarte, E. Gonzales, Melitta Fiebig-Wittmaack, Norbert Kalthoff, I. Bischoff-Gauß, Martin Kohler, C. Meißner
Publikováno v:
JOURNAL OF ARID ENVIRONMENTS
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
The arid Elqui valley, part of the Norte Chico of Chile between 27°S and 33°S latitude, is located south of the hyper-arid Atacama desert. The region is characterized by complex terrain and great different of the surface properties, the latter due
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e74b1b3200c1c99296bfab8a0ba0905d
https://doi.org/10.1016/j.jaridenv.2005.08.013
https://doi.org/10.1016/j.jaridenv.2005.08.013
Publikováno v:
Theoretical and Applied Climatology. 85:227-241
High-resolution model simulations were performed with the quadruple-nested version of the mesoscale model KAMM to investigate the impact of the new storage lake ‘Embalse Puclaro’ on the arid environment. The storage lake covers an area of 1 to 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::605cf5fe68faba49e24ed3823a505508
https://doi.org/10.1007/s00704-005-0190-8
https://doi.org/10.1007/s00704-005-0190-8
Autor:
Enrique Novoa, Clotilde Pizarro, Melitta Fiebig-Wittmaack, Franz Fiedler, Rubén Castillo, Roberto Rondanelli, Jutta Thürauf, Norbert Kalthoff, Martin Kohler, I. Bischoff-Gauß, Laura Gallardo
Publikováno v:
Scopus-Elsevier
In November of 1999, four permanent surface stations were installed in the vicinity of the surface ozone monitoring station on the summit of the Cerro Tololo (2200 m MSL) in Chile at 30°S. These stations were used to study the atmospheric flow condi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e5d82c51df2f9984e01f469102f928c
https://doi.org/10.1175/1520-0450(2002)041<0953:mwrica>2.0.co
https://doi.org/10.1175/1520-0450(2002)041<0953:mwrica>2.0.co
Autor:
Melitta Fiebig-Wittmaack
Publikováno v:
Applicable Analysis. 70:61-66
We consider the problem of existence of multiple ordered solutions for the semi-linear elliptic boundary value problem where L is a second order uniformly elliptic operator. We show that for the case where f exhibits a certain type of oscillatory beh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68807bf0cc4ffcc3a75618ac4d0a7bfd
https://doi.org/10.1080/00036819808840675
https://doi.org/10.1080/00036819808840675
Publikováno v:
Applicable Analysis. 60:359-367
We approximate a Duffing equation by an averaged system. We solve the system explicitely and draw bifurcation diagrams in dependence of the forcing term. We discuss the goodness of the averaging method, relative to the behavior of the solutions in de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2949668601c5e0206403c1aff385802
https://doi.org/10.1080/00036819608840438
https://doi.org/10.1080/00036819608840438
Publikováno v:
Journal of Computational Physics. 115:524-529
Modelling the transport of tracer gases in the lower stratosphere leads to a diffusivity matrix with non-zero off-diagonal elements. This in turn implies non-positivity of conventional difference methods. Computations for regions with sharp gradients
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4045a36f1039b68672f00c1906e922b
https://doi.org/10.1006/jcph.1994.1214
https://doi.org/10.1006/jcph.1994.1214