Results 31 to 40 of about 69,768 (308)
The 8‐Year Solar Cycle During the Maunder Minimum
AGU Advances, 2023 The presence of grand minima, characterized by significantly reduced solar and stellar activity, brings a challenge to the understanding of solar and stellar dynamo. The Maunder Minimum (1645–1715 AD) is a representative grand solar minimum.
Limei Yan +10 more
doaj +1 more source
Solar Cycle 23: An Anomalous Cycle? [PDF]
The Astrophysical Journal, 2004 The latest SOHO VIRGO total solar irradiance (TSI) time series is analyzed using new solar variability measures obtained from full-disk solar images made at the San Fernando Observatory and the Mg II 280 nm index. We discuss the importance of solar cycle 23 as a magnetically simpler cycle and a variant from recent cycles.
Giuliana de Toma +5 more
openaire +1 more source
Radiation Exposure in the Lower Atmosphere during Different Periods of Solar Activity
Atmosphere, 2022 In recent years, there has been a huge increase in air travel, both for business and leisure. For this reason, entities such as the European Commission and the International Committee on Radiological Protection have provided several recommendations for ...
Anastasia Tezari +9 more
doaj +1 more source
Deciphering Solar Magnetic Activity: The Solar Cycle Clock
Frontiers in Astronomy and Space Sciences, 2022 The Sun’s variability is controlled by the progression and interaction of the magnetized systems that form the 22-year magnetic activity cycle (the “Hale Cycle”) as they march from their origin at ∼55° latitude to the equator, over ∼19 years. We will discuss the end point of that progression, dubbed “terminator” events, and our means of diagnosing them.
Robert J. Leamon +3 more
openaire +3 more sources
Atmosphere, 2022 External and internal equivalent current systems of solar quiet (Sq) were obtained using the spherical harmonic analysis (SHA) method with a “mirror” technique based on geomagnetic records from 46 stations in China during 2008–2019.
Xudong Zhao, Yufei He, Yingyan Wu, Qi Li
doaj +1 more source
FEBS Open Bio, EarlyView.This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc +8 more
wiley +1 more source
Solar Cycle Modulation of Nighttime Ozone Near the Mesopause as Observed by MLS
Earth and Space Science, 2020 Eleven‐year solar cycle variations of nighttime ozone near the secondary ozone maximum layer in the mesosphere are analyzed with Aura Microwave Limb Sounder (MLS) observations since 2004, fully covering solar cycle 24.
Jae N. Lee, Dong L. Wu
doaj +1 more source
Solar-cycle-related variation of solar differential rotation [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 19 pages, 8 figures, accepted by MNRAS.
Li, K. J. +6 more
openaire +2 more sources
Adaptable Tile‐Based Pneumatic Origami through Structurally Coupled Localized Actuation
Advanced Engineering Materials, EarlyView.This article presents tile‐based pneumatic origami structures with rigid tiles and flexible fabric creases, achieving adaptable properties including morphing shape, selective multistability, and tunable stiffness. Independently pressurized folding bladders at each crease enable structurally coupled localized actuation of origami structures.
Tiantian Li, Jonathan Luntz, Diann Brei
wiley +1 more source
Tidal Structures in the Mesosphere and Lower Thermosphere and Their Solar Cycle Variations
Atmosphere, 2022 We studied the correlations between the migrating and non-migrating tides and solar cycle in the mesosphere and lower thermosphere (MLT) regions between 60° S and 60° N, which are in LAT-LON Earth coordinates, by analyzing the simulation datasets from ...
Ruidi Sun +3 more
doaj +1 more source