Natural variability of summer rainfall over China in HadCM3   总被引：1，自引：0，他引：1  

Yonghui Lei  Brian Hoskins  Julia Slingo 《Climate Dynamics》2014,42(1-2):417-432

Summer rainfall over China has shown decadal variability in the past half century, which has resulted in major north–south shifts in rainfall with important implications for flooding and water resource management. This study has demonstrated how multi-century climate model simulations can be used to explore interdecadal natural variability in the climate system in order to address important questions around recent changes in Chinese summer rainfall, and whether or not anthropogenic climate change is playing a role. Using a 1,000-year simulation of HadCM3 with constant pre-industrial external forcing, the dominant modes of total and interdecadal natural variability in Chinese summer rainfall have been analysed. It has been shown that these modes are comparable in magnitude and in temporal and spatial characteristics to those observed in the latter part of the twentieth century. However, despite 1,000 years of model simulation it has not been possible to demonstrate that these modes are related to similar variations in the global circulation and surface temperature forcing occurring during the latter half of the twentieth century. This may be in part due to model biases. Consequently, recent changes in the spatial distribution of Chinese summer rainfall cannot be attributed solely to natural variability, nor has it been possible to eliminate the likelihood that anthropogenic climate change has been the driving factor. It is more likely that both play a role.  相似文献   

Hydrologic responses to climate change: considering geographic context and alternative hypotheses     

Julia A. Jones 《水文研究》2011,25(12):1996-2000

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CIRPASS near-infrared integral-field spectroscopy of massive star clusters in the starburst galaxy NGC 1140     

R. de Grijs  L. J. Smith  A. Bunker †  R. G. Sharp  J. S. Gallagher iii  P. Anders  A. Lançon  R. W. O'Connell  I. R. Parry 《Monthly notices of the Royal Astronomical Society》2004,352(1):263-276

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A search for distant radio galaxies from SUMSS and NVSS – III. Radio spectral energy distributions and the z–α correlation     

Ilana J. Klamer  Ron D. Ekers  Julia J. Bryant  Richard W. Hunstead  Elaine M. Sadler  Carlos De Breuck 《Monthly notices of the Royal Astronomical Society》2006,371(2):852-866

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Book reviews     

W. E. Sharp  James R. Carr 《Mathematical Geology》1996,28(3):367-369

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LEGRI instrument health. A historical review     

Julia Suso  Pere Blay  Almudena Robert  Victor Reglero  Chris J. Eyles 《Astrophysics and Space Science》2001,276(1):299-309

LEGRI has been operating successfully on MINISAT-01 since its switch-on the 22nd of May 1997. HouseKeeping (HK) data have been continuously receivedfor nearly two years by LEGRI SOC in Valencia, and subsequently checked on adaily basis and then stored for long term monitoring analysis.LEGRI HouseKeeping data include three critical operating parameters:temperature, power and polarisation voltages. Six temperature sensors arespread over the different LEGRI units: Detector Unit, Data Processing Unit,High Voltage Unit and Star Sensor. Voltages are measured at eight differentpoints. Detector Unit temperature and polarisation voltage are thecritical parameters for LEGRI operation. Solid state detectors aresensitive to changes not only in polarisation but also in temperature.Around one and a half million of measurements for each of the HK fourteen parameters have been recorded and analysed. The data show a very remarkablestability, within the expected margins, and the averages are very close to theoptimal design values. Special attention has been paid to the detectorpolarisation voltages analysis with a mean value of 286 ± 2 V when the detectors are operating. Thermal control over all the LEGRI units shows a remarkable stability in their temperatures.On the detector plane a mean value of T _det = 13 ± 2 ^°C has been found.We can therefore conclude that LEGRI as a system has been operating withinits optimal design conditions. We also want to point out the excellentperformance of the MINISAT-01 thermal control system.  相似文献   

Bayesian active learning for parameter calibration of landslide run-out models     

Zhao  Hu  Kowalski  Julia 《Landslides》2022,19(8):2033-2045

Landslides - Landslide run-out modeling is a powerful model-based decision support tool for landslide hazard assessment and mitigation. Most landslide run-out models contain parameters that cannot...  相似文献   

Influence of Weathering on Pore Size Distribution of Soft Rocks     

Knopp  Julia  Steger  Hagen  Moormann  Christian  Blum  Philipp 《Geotechnical and Geological Engineering》2022,40(11):5333-5346

Geotechnical and Geological Engineering - Soft rocks can weather and lose their structure within a short time due to drying out and rewetting. Thus they are very sensitive to weathering. Since...  相似文献   

The geology of the carbonate-hosted Blende Ag–Pb–Zn deposit,Wernecke Mountains,Yukon, Canada     

Micheal Moroskat  Sarah A. Gleeson  R. J. Sharp  A. Simonetti  C. J. Gallagher 《Mineralium Deposita》2015,50(1):83-104

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Diagenetic evolution of Aptian evaporites in the Namibe Basin (south‐west Angola)          下载免费PDF全文

Laurent Gindre‐Chanu  John K. Warren  Cai Puigdefabregas  Ian R. Sharp  David C. P. Peacock  Roger Swart  Ragnar Poulsen  Hercinda Ferreira  Lourenco Henrique 《Sedimentology》2015,62(1):204-233

The widespread and dissected nature of the Angolan gypsiferous salt residuals offers a uniquely detailed view of the lateral and vertical relations inherent to secondary evaporite textures, which typify exhumed salt masses worldwide. Such secondary textures are sometimes misinterpreted as primary evaporite textures. Thin, metre‐scale and patchy, dome‐like gypsum accumulations are well‐exposed within strongly incised present‐day river valleys along the eastern margin of the Namibe and Benguela basins (south‐west Angola). These sections are time equivalent to the main basinward subsurface evaporites (Aptian Loeme Formation) which mostly consist of halite. The gypsum (here called the Bambata Formation) is interpreted to represent the final residual product of fractional dissolution and recrystallization of the halite mass that occurred during Late Cretaceous margin uplift and continues today. This halite underwent multiple episodes of diagenetic alteration between its deposition and its final exhumation, leading to the formation of various secondary gypsum fabrics and solution‐related karst and breccia textures that typify the current evaporite outcrop. Four different diagenetic gypsum fabrics are defined: thinly bedded alabastrine, nodular alabastrine, displacive selenite rosettes and fibrous satin‐spar gypsum. Current arid conditions are responsible for a thin weathered crust developed at the top of the outcropping gypsum, but the fabrics in the main core of the current at‐surface evaporite unit mostly formed during the telogenetic stage of uplift prior to complete subaerial exposure. Alteration occurred as various dissolving and rehydrating saline minerals encountered shallow aquifers in the active phreatic and vadose zones. Geomorphological and petrographic analyses, mostly based on the cross‐cutting relations and crystallographic patterns in the outcrop, are used to propose a sequence of formation of these different fabrics.  相似文献