Using a new computer model of the Sun, scientists have begun work on a groundbreaking forecast of the next cycle of sunspots. Mausumi Dikpati of the National Center for Atmospheric Research (NCAR) announced new research leading to an improved forecast of cycle 24 at the annual meeting of the American Astronomical Society (AAS) in Denver. Predicting features of the solar cycle may help society anticipate sunspots and associated solar storms, which can disrupt communications and power systems and expose astronauts to high amounts of radiation.
A map of observed solar magnetic fields from the National Solar Observatory (top) correlates closely with a new NCAR model. Both images show the longitudinal averages of the fields. NCAR scientists are using the Predictive Flux-transport Dynamo Model to make predictions about solar cycle 24, which will probably begin about 2007 to 2008. (Image courtesy Mausumi Dikpati, Giuliana de Toma, Peter Gilman, and Oran White, all of NCAR; and Charles Arge of CU-Boulder and NOAA.)
The forecast draws on research by scientists at NCARs High Altitude Observatory indicating that the evolution of sunspots is caused by a current of plasma, or electrified gas, that circulates between the Suns equator and its poles over a number of years. The forecasters believe the next solar cycle will begin in 2007 to 2008 if the plasma circulation, which has slowed down during the present solar cycle, continues to decelerate. That would mean cycle 24 would begin about a half-year later than if the cycles followed the standard 11-year span.
“We will spend the next several months incorporating additional plasma flow data into our model to determine the rising pattern of cycle 24,” explains Dikpati, a leader of the research team. “Our focus will be on when the cycle is likely to reach maximum and cause geomagnetic storms in Earth’s atmosphere.”
Anatta | UCAR
SF State astronomer searches for signs of life on Wolf 1061 exoplanet
20.01.2017 | San Francisco State University
Molecule flash mob
19.01.2017 | Technische Universität Wien
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
20.01.2017 | Awards Funding
20.01.2017 | Materials Sciences
20.01.2017 | Life Sciences