Results 31 to 40 of about 54,891 (314)

Delayed response of the global total electron content to solar EUV variations [PDF]

open access: yesAdvances in Radio Science, 2016
The ionospheric response to solar extreme ultraviolet (EUV) variability during 2011–2014 is shown by simple proxies based on Solar Dynamics Observatory/Extreme Ultraviolet Variability Experiment solar EUV spectra.
C. Jacobi   +3 more
doaj   +1 more source

Sub-decadal- to decadal-scale climate cyclicity during the Holsteinian interglacial (MIS 11) evidenced in annually laminated sediments [PDF]

open access: yes, 2011
To unravel the short-term climate variability during Marine Isotope Stage (MIS) 11, which represents a close analogue to the Holocene with regard to orbital boundary conditions, we performed microfacies and time series analyses on a ~3200-yr-long record ...
Müller, Ulrich C.   +22 more
core   +1 more source

Variations in Solar Activity Across the Spörer Minimum Based on Radiocarbon in Danish Oak

open access: yesGeophysical Research Letters, 2019
Several aspects concerning the origin and nature of grand solar minima remain unclear, and more high‐resolution 10Be and 14C records are needed to improve our understanding of these phenomena.
A. Fogtmann‐Schulz   +6 more
doaj   +1 more source

Apparent Solar Diameter and Variability [PDF]

open access: yesSymposium - International Astronomical Union, 1997
Philippe Delache brought me to solar physics in late June 1992. The first things he began with was the diameter of the Sun as it is measured at the “plateau de Calern”, and my first work was to analyze this time series in order to separate the “noise” from the pertinent information (section 2).
openaire   +1 more source

Solar Variability Datalogger [PDF]

open access: yesJournal of Solar Energy Engineering, 2016
To address the lack of knowledge of local solar variability, we have developed and deployed a low-cost solar variability datalogger (SVD). While most currently used solar irradiance sensors are expensive pyranometers with high accuracy (relevant for annual energy estimates), low-cost sensors display similar precision (relevant for solar variability) as
Matthew Lave, Joshua Stein, Ryan Smith
openaire   +1 more source

Major Δ14C excursions during the late glacial and early Holocene: changes in ocean ventilation or solar forcing of climate change? [PDF]

open access: yes, 2003
The atmospheric 14C record during the Late Glacial and the early Holocene shows sharp increases simultaneous with cold climatic phases. These increases in the atmospheric 14C content are usually explained as the effect of reduced oceanic CO2 ventilation ...
Geel, B. van   +9 more
core   +1 more source

Intercomparing Solar Spectral Irradiance From SORCE SIM

open access: yesEarth and Space Science, 2020
We compare solar spectral irradiance (SSI) measurements obtained from the Spectral Irradiance Monitor (SIM) on board the Solar Radiation and Climate Experiment (SORCE), corrected for instrument degradation using three different methods; SIM Version 25 ...
Steffen Mauceri   +4 more
doaj   +1 more source

Introduction to special issue on high speed solar wind streams and geospace interactions (HSS-GI) [PDF]

open access: yes, 2009
This special issue of the Journal of Atmospheric and Solar-Terrestrial Physics is devoted to research into high speed solar wind streams (HSSs) and their effects on the region of near-Earth space commonly known as ‘geospace’.
Morley, S.K.   +7 more
core   +1 more source

Formation of helium lines in solar prominences [PDF]

open access: yes, 2009
We summarize the results on the formation of the helium spectrum in solar prominences obtained over recent years. The radiative transfer problem under non-LTE conditions is solved to compute the profiles of the lines of He I and He II.
Nicolas Labrosse   +7 more
core   +1 more source

Solar Spectral Irradiance Variability in November/December 2012

open access: yes, 2022
S.4433-4452Onboard the International Space Station (ISS), two instruments are observing the solar spectral irradiance (SSI) at wavelengths from 16 to 2900 nm.
Cessateur, G.   +15 more
core   +1 more source

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