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Anzeige der Dokumente 4613-4632 von 6924
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Observational Evidence for Multivariate Drought Hazard Amplifications Across Disparate Climate Regimes
; ; (Earth's Future, 2022-09-16)
Drought poses significant challenges to global water security in a warming world. A global‐scale synthesis of the multivariate drought risk considering interdependencies between drought attributes across disparate climate ... -
Observations and high-resolution simulations of convective precipitation organization over the tropical Atlantic
; ; (Quarterly Journal of the Royal Meteorological Society, 2020)
High-resolution simulations (grid spacing 2.5 km) are performed with ICON-LEM to characterize convective organization in the Tropics during August 2016 over a large domain ranging from northeastern South America, along the ... -
Observations of Gravity Wave Refraction and Its Causes and Consequences
; ; ; ; ; ; ; ; ; ; (Journal of Geophysical Research: Atmospheres, 2023-02-06)
Horizontal gravity wave (GW) refraction was observed around the Andes and Drake Passage during the SouthTRAC campaign. GWs interact with the background wind through refraction and dissipation. This interaction helps to ... -
Observations of Laboratory and Natural Slow Slip Events: Hikurangi Subduction Zone, New Zealand
; ; ; ; ; Kopf, Achim J. (Geochemistry, Geophysics, Geosystems, 2020)
Slow slip events (SSEs) are recognized as an important component of plate boundary fault slip, and there is a need for laboratory friction data on natural samples to guide comparisons with natural SSEs. Here, we compile a ... -
Observations on Astraeospongium meniscum (Roemer, 1948) from the Silurian of western Tennessee; constructional morphology and palaeobiology of the Astraeospongiidae (Calcarea, Heteractinellidae)
Mehl, Dorte; (Berliner geowissenschaftliche Abhandlungen : Reihe E, 1996)
Astraeospongium is found to form secondary calcareous basal skeletons and thus may be attributed to the morphological grouping "coralline sponges". In A. meniscum, a bowl-shaped sponge with a massive skeleton of octactins, ... -
Observed and Simulated Variability of Droplet Spectral Dispersion in Convective Clouds Over the Amazon
; ; ; ; ; ; ; ; ; ; ; (Journal of Geophysical Research: Atmospheres, 2021-10-15)
In this study, the variability of the spectral dispersion of droplet size distributions (DSDs) in convective clouds is investigated. Analyses are based on aircraft measurements of growing cumuli near the Amazon basin, and ... -
Observed Subdecadal Variations of European Summer Temperatures
Müller, W.A.;; Ghosh, R. (Geophysical Research Letters, 2020)
We identify subdecadal variations in European summer temperatures in coupled and uncoupled century-long reanalyses. Spectral analyses reveal significant peaks at 5–10 years in the midtwentieth century. The subdecadal ... -
Observing Earth’s magnetic environment with the GRACE-FO mission
; ; ; ; ; ; ; (Earth, Planets and Space, 2021-02-15)
The Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission carries magnetometers that are dedicated to enhance the satellite’s navigation. After appropriate calibration and characterisation of artificial ... -
Observing noctilucent clouds
(Internat. Assoc. of Geomagnetism & Aeronomy, 2006)This manual and instruction book was written by a group of active researchers, both professional and amateur. There are chapters giving practical advice for taking visual observations, photographing the clouds with film ... -
Ocean Bottom Pressure Variability: Can It Be Reliably Modeled?
Androsov, Alexey; Boebel, Olaf;; ; Macrander, Andreas; (Journal of Geophysical Research: Oceans, 2020)
Ocean bottom pressure (OBP) variability serves as a proxy of ocean mass variability, the knowledge of which is needed in geophysical applications. The question of how well it can be modeled by the present general ocean ... -
Ocean Heat Transport Into the Barents Sea: Distinct Controls on the Upward Trend and Interannual Variability
; ; ; ; ; ; ; ; ; (Geophysical Research Letters, 2019)
Ocean heat transport through the Barents Sea Opening (BSO) has strong impacts on the Barents Sea ice extent and the climate. In this paper we quantified the contributions from different atmospheric forcing components to ... -
Ocean Kinetic Energy Backscatter Parametrization on Unstructured Grids: Impact on Global Eddy-Permitting Simulations
;; ; ; (Journal of Advances in Modeling Earth Systems, 2020)
In this study we demonstrate the potential of a kinetic energy backscatter scheme for use in global ocean simulations. Ocean models commonly employ (bi)harmonic eddy viscosities causing excessive dissipation of kinetic ... -
Ocean Model Formulation Influences Transient Climate Response
; ; ; ; ; ; (Journal of Geophysical Research: Oceans, 2021-12-05)
The transient climate response (TCR) is 20% higher in the Alfred Wegener Institute Climate Model (AWI‐CM) compared to the Max Planck Institute Earth System Model (MPI‐ESM) whereas the equilibrium climate sensitivity (ECS) ... -
Ocean resurge-induced impact melt dynamics on the peak-ring of the Chicxulub impact structure, Mexico
; ; ;; ; ; ; ; (International Journal of Earth Sciences, 2021-03-18)
Core from Hole M0077 from IODP/ICDP Expedition 364 provides unprecedented evidence for the physical processes in effect during the interaction of impact melt with rock-debris-laden seawater, following a large meteorite ... -
Oceanic anoxic event (OAE) 1b - high resolution geochemical studies, Mazagan Plateau and the Vocontian Basin
(Univ. Köln, 2009)Während der Kreide wurden zahlreiche Störungen des globalen Kohlenstoffkreislaufes aufgezeichnet. Diese Störungen führten zu organisch reichen Ablagerungen, den sogenannten ozeanischen anoxischen Ereignissen (OAEs). Der ... -
Offshore Freshened Groundwater in Continental Margins
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; Martin‐Nagle, Renée; ; ; ; ; Trembath‐Reichert, Elizabeth; ; ; (Reviews of Geophysics, 2021-01-04)
First reported in the 1960s, offshore freshened groundwater (OFG) has now been documented in most continental margins around the world. In this review we compile a database documenting OFG occurrences and analyze it to ... -
ogs5py: A Python‐API for the OpenGeoSys 5 Scientific Modeling Package
Müller, Sebastian; Zech, Alraune; (Groundwater, 2020-06-16)
High‐performance numerical codes are an indispensable tool for hydrogeologists when modeling subsurface flow and transport systems. But as they are written in compiled languages, like C/C++ or Fortran, established software ... -
Oldest entirely preserved sponges and other fossils from the Lowermost Cambrian and a new facies reconstruction of the Yangtze platform (China)
Steiner, M.; Mehl, D.;; Erdtmann, B.-D. (1993)
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Oldest entirely preserved sponges and other fossils from the Lowermost Cambrian and a new facies reconstruction of the Yangtze platform (China)
Steiner, M.; Mehl, D.;; Erdtmann, B.-D. (Berliner geowissenschaftliche Abhandlungen, 1993)
Eine Faziesrekonstruktion W1d Korrelation obersinischer-unterkambrischer Schichten der Yangtze-Plattform (Südchina) wird vorgestellt. Dabei wird zwischen geschütztem Becken, Schwelle W1d tiefem Becken unterschieden. Die ...
