Results 191 to 200 of about 546 (232)

Tropical fruits in the Mediterranean Basin: current research status, priorities, and knowledge gaps. A systematic review. [PDF]

open access: yesFront Plant Sci
Massaad M   +10 more
europepmc   +1 more source

Rain, rain, go away, come again another day: do climate variations enhance the spread of COVID-19? [PDF]

open access: yesGlobal Health
Menhat M   +11 more
europepmc   +1 more source

IMAP's Role in Understanding Particle Injection and Energization Throughout the Heliosphere. [PDF]

open access: yesSpace Sci Rev
Cohen CMS   +30 more
europepmc   +1 more source

In vitro selection and analysis of SARS-CoV-2 nirmatrelvir resistance mutations contributing to clinical virus resistance surveillance. [PDF]

open access: yesSci Adv
Zhu Y   +24 more
europepmc   +1 more source

Group Sunspot Numbers: Sunspot Cycle Characteristics

Solar Physics, 2002
We examine the "Group" sunspot numbers constructed by Hoyt and Schatten to determine their utility in characterizing the solar activity cycle. We compare smoothed monthly Group Sunspot Numbers to Zurich (International) Sunspot Numbers, 10.7-cm radio flux, and total sunspot area.
David H. Hathaway   +2 more
openaire   +1 more source

Sunspot Group Decay

Solar Physics, 2008
We examine daily records of sunspot group areas (measured in millionths of a solar hemisphere or μHem) for the last 130 years to determine the rate of decay of sunspot group areas. We exclude observations of groups when they are more than 60° in longitude from the central meridian and only include data when at least three days of observations are ...
David H. Hathaway, Debi Prasad Choudhary
openaire   +1 more source

On the dissolution of sunspot groups

Solar Physics, 1982
The behavior of magnetic fluxes from active regions is investigated for times near sunspot disappearance. It is found that the magnetic fluxes decrease on or near the date the spot vanishes. This effect is investigated and it is concluded that it is actually due to changes in the field, rather than through dissipation of the active region fields.
StevenG. Wallenhorst, Robert Howard
openaire   +1 more source

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