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1

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On the contribution of statistical bias correction to the uncertainty in the projected hydrological cycle (2011)

Cui Chen, Jan O. Haerter, Stefan Hagemann and Claudio Piani

Wiley

In: Geophysical Research Letters

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Publikationsdatum: 2011-10-26

Beschreibung: Global hydrological modeling is affected by three sources of uncertainty: (i) the choice of the global climate model (GCM) used to provide meteorological forcing data; (ii) the choice of future greenhouse gas concentration scenario; and (iii) the choice of the decade used to derive the bias correction parameters. We present a comparative analysis of these uncertainties and compare them to the inter-annual variability. The analysis focuses on discharge, integrated runoff and total precipitation over ten large catchments, representative of different climatic areas of the globe. Results are similar for all catchments, all hydrological variables and throughout the year with few exceptions. We find that the choice of different decadal periods over which to derive the bias correction parameters is a source of comparatively minor uncertainty, while other sources play larger and similarly significant roles. This is true for both the means and the extremes of the studied hydrological variables.

Print ISSN: 0094-8276

Digitale ISSN: 1944-8007

Thema: Geologie und Paläontologie , Physik

Publiziert von Wiley im Namen von American Geophysical Union (AGU).

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2

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Nucleation in the Karlsruhe plume during the COPS/TRACKS-Lagrange experiment (2011)

W. Junkermann; R. Hagemann; B. Vogel

Wiley

In: Quarterly Journal of the Royal Meteorological Society

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Publikationsdatum: 2011-02-19

Beschreibung: A plume of ultrafine particles was observed downwind of the Karlsruhe city and industrial area during the COPS/TRACKS Lagrangian airborne experiment in summer 2007. These ultrafine particles were identified as nucleation-generated aerosols from emissions of a coal-fired power plant and an adjacent refinery, the two main emitters of sulphur dioxide in the area. Modelling the production and growth of aerosols with the COSMO-ART model required, in agreement with the known emission sources, a strong elevated source of sulphur dioxide to explain the temporal evolution of the particle plume. The power plant at Karlsruhe Rheinhafen emits from a 233 m high chimney. The ultrafine particles produced from these fossil-fuel-related sources were the dominant fraction of all ultrafine particles in the rural area of the Kraichgau downwind of Karlsruhe, exceeding all other anthropogenic sources and are suspected of being the major contribution to the number of cloud condensation nuclei (CCN) on a regional scale. Compared to previous investigations on the sulphur chemistry in power-plant plumes, emissions from this power plant, which is equipped with modern stack-gas cleaning technology, had a higher yield of nucleation-mode aerosols as CCN precursors per emitted sulphur dioxide mass. Copyright © 2011 Royal Meteorological Society

Print ISSN: 0035-9009

Digitale ISSN: 1477-870X

Thema: Geographie , Physik

Publiziert von Wiley

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3

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A framework for the evaluation of the South Asian summer monsoon in a regional climate model applied to REMO (2011)

Fahad Saeed; Stefan Hagemann; Daniela Jacob

Wiley

In: International Journal of Climatology

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Publikationsdatum: 2011-01-15

Beschreibung: Considering the complex spatial and vertical structure of the South Asian summer monsoon (SASM), the validation of a regional climate model (RCM) dealing with only a few surface variables is considered insufficient. Therefore, we have proposed an evaluation framework for the better assessment of the capability of an RCM in capturing the fundamental structure of SASM. This framework has been applied to the regional climate model REMO using ERA40 lateral boundary conditions for the period 1961–2000. The application of framework yielded satisfactory performance of REMO in capturing the lower, middle, and upper component of the SASM circulation. REMO has higher correlation between different SASM indices as compared to ERA40, showing its ability in capturing the dynamical link between these indices better than ERA40. We have employed different criteria for the assessment of the monsoon onset, and the movement of the Intertropical Convergence Zone (ITCZ) during the boreal summer and REMO has captured these phenomena reasonably well. The model has also shown the association of the meridional temperature gradient with the easterly shear of zonal winds. These results lead us to the conclusion that REMO is well suited for long-term climate change simulations to examine projected future changes in the complex SASM system. Copyright © 2011 Royal Meteorological Society

Print ISSN: 0899-8418

Digitale ISSN: 1097-0088

Thema: Geologie und Paläontologie , Physik

Publiziert von Wiley

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4

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Photocatalytic CO2 reduction by Cr-substituted Ba2(In2-Cr )O5·(H2O) (0.04 ≤ x ≤ 0.60) (2018)

Yoon, Songhak ; Gaul, Michael ; Sharma, Sitansh ; [weitere]

Elsevier

In: Solid State Sciences. 2018; 78: 22-29. Published 2018 Apr 01. doi: 10.1016/j.solidstatesciences.2018.02.005.

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Publikationsdatum: 2018-04-01

Print ISSN: 1293-2558

Digitale ISSN: 1873-3085

Thema: Chemie und Pharmazie , Physik

Publiziert von Elsevier

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5

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The current status of B-physics at the Z0 peak and future prospects (1994)

Barker, G. ; Dittmar, M. ; Hagemann, J. ; [weitere]

Elsevier

In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1994; 351(1): 31-42. Published 1994 Nov 01. doi: 10.1016/0168-9002(94)91062-6.

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Publikationsdatum: 1994-11-01

Print ISSN: 0168-9002

Digitale ISSN: 1872-9576

Thema: Physik

Publiziert von Elsevier

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6

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A xenon gas purity monitor for EXO (2011)

Dobi, A. ; Hall, C. ; Herrin, S. ; [weitere]

Elsevier

In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2011; 659(1): 215-228. Published 2011 Dec 01. doi: 10.1016/j.nima.2011.09.017.

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Publikationsdatum: 2011-12-01

Print ISSN: 0168-9002

Digitale ISSN: 1872-9576

Thema: Physik

Publiziert von Elsevier

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7

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Particle identification with COMPASS RICH-1 (2011)

Abbon, P. ; Alexeev, M. ; Angerer, H. ; [weitere]

Elsevier

In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2011; 631(1): 26-39. Published 2011 Mar 01. doi: 10.1016/j.nima.2010.11.106.

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Publikationsdatum: 2011-03-01

Print ISSN: 0168-9002

Digitale ISSN: 1872-9576

Thema: Physik

Publiziert von Elsevier

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8

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The experience of building and operating COMPASS RICH-1 (2011)

Abbon, P. ; Alexeev, M. ; Angerer, H. ; [weitere]

Elsevier

In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2011; 639(1): 15-19. Published 2011 May 01. doi: 10.1016/j.nima.2010.10.102.

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Publikationsdatum: 2011-05-01

Print ISSN: 0168-9002

Digitale ISSN: 1872-9576

Thema: Physik

Publiziert von Elsevier

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9

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Precipitation variability over the South Asian monsoon heat low and associated teleconnections (2011)

Sajjad Saeed, Wolfgang A. Müller, Stefan Hagemann, Daniela Jacob, M. Mujumdar and R. Krishnan

Wiley

In: Geophysical Research Letters

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Publikationsdatum: 2011-04-22

Beschreibung: The present study examines the precipitation variability over the South Asian monsoon heat low region and associated teleconnections using high resolution (T106L31) climate simulations performed with the ECHAM5 model. It is found that an intensification of the heat low in response to enhanced precipitation/convection over northwestern India-Pakistan (NWIP) can induce large-scale circulation anomalies that resemble the northern summer circumglobal teleconnection (CGT) wave-like pattern extending well into the Asian monsoon region. Accordingly the wave-like response to rainfall increase over the heat low region is associated with anomalous ascent over northern China and descent over the South China Sea. Additionally, small but statistically significant lead-lag correlations between the heat low and precipitation over northern China further suggest that the detected signal pertains to the true features of the process. On the other hand, suppressed convection and rainfall over the heat low region do not reveal any significant large-scale circulation anomalies.

Print ISSN: 0094-8276

Digitale ISSN: 1944-8007

Thema: Geologie und Paläontologie , Physik

Publiziert von Wiley im Namen von American Geophysical Union (AGU).

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