Sentences with phrase «based solar observation»

(b) Observational study of space weather using the Solar Magnetic Activity Research Telescope (SMART) and the international ground - based solar observation network (CHAIN).

Not exact matches

Based on telescope observations of young sunlike stars, researchers estimate that «super» solar flares bombarded Earth with energetic particles at least once a day around 4 billion years ago.

More exoplanet discoveries are expected to be announced next week in Moran, Wyoming, at a conference on extreme solar systems, and a new batch of Kepler data, based on 674 million observations recorded from September to December 2009, is scheduled for public release on 23 September.

The team's new estimate of the rate of solar mass loss represents one of the first times this value has been constrained based on observations rather than theoretical calculations.

The structure is further demonstrated by the 3 - D magnetic modeling based the observations of Helioseismic and Magnetic Imager on board Solar Dynamic Observatory.

Based on 86 radial velocity observations obtained with the HARPS - N spectrograph on the Telescopio Nazionale Galileo and 32 archival Keck / HIRES observations, we present a prec... ▽ More Kepler - 93b is a 1.478 + / - 0.019 Earth radius planet with a 4.7 day period around a bright (V = 10.2), astroseismically - characterized host star with a mass of 0.911 + / -0.033 solar masses and a radius of 0.919 + / -0.011 solar radii.

To carry out novel investigations based on spectro - polarimetric observations with ground - based and space solar telescopes, with emphasis on the study of the magnetic field in chromospheric and coronal structures and its coupling with the underlying photosphere.

Based on these observations and experiments, Harker and Pevtsov conclude that the observed magnetic transient is not an artifact created by the SDO / HMI observation process, but instead represents a real change in the vector magnetic field; since the active region was located so close to the solar limb, this suggests that the transient manifested in the horizontal component of the magnetic field (relative to the solar surface).

The ground - based observations complement solar observations from space.

We expect that visitors using National Solar Observatory facilities will publish any research based on their observations.

High - resolution observations are presented based on direct imaging, two - dimensional spectropolarimetry with Fabry - Pérot interferometers, and scanning long - slit spectrographs to introduce some of the science cases for high - resolution solar physics: (1) statistical properties of flows in and around pores and sunspots, (2) chromospheric dynamics associated with newly emerging flux, and (3) flare diagnostics from near - infrared spectropolarimetry.

The study brought together data from several spacecraft, as well as supporting observations from solar wind probes and ground - based geomagnetic observatories, to develop a model that describes the Earth's magnetic field and its interaction with the solar wind not just theoretically as had been the case previously, but based on actual measurements.

Right, and based on past observations (see Dalton, Maunder, Spoerer, etc. minima), the relationship of planetary orbits to periods of increased or decreased solar output, and the recent geometry of the various planets, and the solar barycenter, odds are pretty good that we're due for a decade or more period of reduced solar output.

One reason for these uncertainties is that there are only approximately 25 years of satellite - based observations of the solar irradiance.

I have been raising this issue for some time especially in my various articles for ClimateRealists.com in which I have been persistently proposing that on the basis of real world climate observations the effect of solar variability on climate must be the opposite of conventional climatology.

(Granted, one can make some inferred solar observations on a longer scale based on tree ring data, etc..)

As an alternative way, a number of (semi --RRB- empirical models are based on observations, aiming to associate cosmic - ray variations with various solar and heliospheric parameters.

Here, we report unique observations on atmospheric aerosol formation based on measurements at the SMEAR II station, Finland, over a solar cycle (years 1996 — 2008) that shed new light on these presumed relationships.

Earlier models were developed based on observations corresponding to the period of high levels of solar activity, the so - called Modern Grand maximum of solar activity (Solanki et al. 2004).

What is clear is that the old TSI reconstructions based on the Opinions, of course differ, but what is clear is that the variation since we have satellite observations has been minimal, nothing at all if we simply look at changes at the solar cycle minima, and less than 1 W / m2 from valley to peak.

This was established on the systematic comparison between models» predictions with actual observations obtained over almost one solar cycle (1998 — 2007) at four European ionospheric locations (Athens, Chilton, Juliusruh, and Rome) and on the comparison of the models» performance against two standard prediction strategies, the median - and the persistence - based predictions.

Earth & Planetary Science Letters (2005) and many papers afterwards If the solar magnetism is very closely correlated to temperatures, then there is no need of carbon dioxide and «forcing» based tales to explain the observations.

If the solar magnetism is very closely correlated to temperatures, then there is no need of carbon dioxide and «forcing» based tales to explain the observations.

The solar magnetic cycle is rapidly changing, it appears the sun will be spotless based on observations by the end of this year.

William Astley says: July 21, 2013 at 12:51 pm The solar magnetic cycle is rapidly changing, it appears the sun will be spotless based on observations by the end of this year.

Leif Svalgaard says: July 21, 2013 at 3:55 pm William Astley says: July 21, 2013 at 12:51 pm The solar magnetic cycle is rapidly changing, it appears the sun will be spotless based on observations by the end of this year.

Lockwood et al. (1999); reviewing various claims, including some based on observations of variations in supposedly Sun - like stars, three experts concluded in 2004 that «Any relationship» between long - term solar variations and climate «must remain speculative,» Foukal et al. (2004).

The basis for this statement is comparison of global climate model simulations with observations for the 20th century, for simulations conducted with natural forcing (solar and volcanic) only and natural plus anthropogenic forcing (greenhouse gases and anthropogenic aerosol).

There is external forcing (e.g. solar input, volcanoes) which is specified in historical simulations to the best of our knowledge based upon observations.