Results 11 to 20 of about 411 (106)

50 Gbit/s real-time test environment for integrated photonic DQPSK receivers [PDF]

Advances in Radio Science, 2014
In this paper an FPGA-based test system for high-speed transmission experiments with integrated photonic receivers is presented. Pseudorandom binary sequences are generated inside the FPGA and encoded as either differential quadrature phase shift keying (
T. Föhn, C. Fischer, M. Berroth
doaj   +1 more source

Melting over the northeast Antarctic Peninsula (1999–2009): evaluation of a high-resolution regional climate model [PDF]

The Cryosphere, 2018
Surface melting over the Antarctic Peninsula (AP) may impact the stability of ice shelves and thus the rate at which grounded ice is discharged into the ocean. Energy and mass balance models are needed to understand how climatic change and atmospheric
R. T. Datta, M. Tedesco, C. Agosta, X. Fettweis, P. Kuipers Munneke, M. R. van den Broeke   +5 more
doaj   +1 more source

Evolution of heatwaves in Chile since 1980

Weather and Climate Extremes, 2023
Heatwaves (HWs) are highly dangerous threats to human and ecosystem health, as well as to many economic sectors around the world. In the present work focused on Chile, we use a high-resolution (∼5 km) gridded product (CR2Met v2.0) to evaluate the ...
Álvaro González-Reyes, Martín Jacques-Coper, Claudio Bravo, Maisa Rojas, René Garreaud   +4 more
doaj   +1 more source

Solar energy production forecasting through artificial neuronal networks, considering the Föhn, north and south winds in San Juan, Argentina

The Journal of Engineering, 2019
This study presents a method to predict a day-ahead solar irradiation curve, under extreme meteorological phenomena (Föhn, north and south winds), existing in the province of San Juan, Argentina.
Luis Carlos Parra Raffán, Andrés Romero, Maximiliano Martinez   +2 more
doaj   +1 more source

Near-surface climate and surface energy budget of Larsen C ice shelf, Antarctic Peninsula [PDF]

The Cryosphere, 2012
Data collected by two automatic weather stations (AWS) on the Larsen C ice shelf, Antarctica, between 22 January 2009 and 1 February 2011 are analyzed and used as input for a model that computes the surface energy budget (SEB), which includes melt energy.
P. Kuipers Munneke, M. R. van den Broeke, J. C. King, T. Gray, C. H. Reijmer   +4 more
doaj   +1 more source

Numerical simulation of mesoscale structures in the northern Alpine foreland during front passages: A dry cold front with pre-frontal foehn

Meteorologische Zeitschrift, 1992
A three-dimensional numerical model is used to simulate the passage of a cold front with pre-frontal foehn over the northern Alpine foreland. A passive nesting scheme allows a detailed inspection of mesoscale patterns in southern Bavaria. The results are
D. Heimann
doaj   +1 more source

A benchmark dataset of in situ Antarctic surface melt rates and energy balance

Journal of Glaciology, 2020
Surface melt on the coastal Antarctic ice sheet (AIS) determines the viability of its ice shelves and the stability of the grounded ice sheet, but very few in situ melt rate estimates exist to date.
Constantijn L. Jakobs, Carleen H. Reijmer, C. J. P. Paul Smeets, Luke D. Trusel, Willem Jan van de Berg, Michiel R. van den Broeke, J. Melchior van Wessem   +6 more
doaj   +1 more source

Photobiological Effects on Ice Algae of a Rapid Whole-Fjord Loss of Snow Cover during Spring Growth in Kangerlussuaq, a West Greenland Fjord

Journal of Marine Science and Engineering, 2021
Snow cover on sea ice is the most important factor controlling light availability for sea ice algae, but it is predicted by climate models to become more variable and stochastic.
Brian K. Sorrell, Ian Hawes, Tanja Stratmann, Lars Chresten Lund-Hansen   +3 more
doaj   +1 more source

Numerical simulation of mesoscale structures in the northern alpine foreland during front passages: A precipitating cold front without pre-frontal foehn

Meteorologische Zeitschrift, 1993
Supplementing a previous study of a dry cold front with pre-frontal foehn (Heimann 1992c) this paper documents the numerical simulation of a precipitating cold front approaching the Alps from northwest without pre-frontal foehn.
Dietrich Heimann
doaj   +1 more source

Utilization Barriers and Medical Outcomes Commensurate With the Use of Telehealth Among Older Adults: Systematic Review

JMIR Medical Informatics, 2020
BackgroundRising telehealth capabilities and improving access to older adults can aid in improving health outcomes and quality of life indicators. Telehealth is not being used ubiquitously at present.
Kruse, Clemens, Fohn, Joanna, Wilson, Nakia, Nunez Patlan, Evangelina, Zipp, Stephanie, Mileski, Michael   +5 more
doaj   +1 more source