Results 11 to 20 of about 47,504 (266)

Periodic Variation of Solar Flare Index for the Last Solar Cycle (Cycle 24)

Advances in Astronomy, 2021
In this study, we used the flare index (FI) data taken from Kandilli Observatory for the period of 2009–2020. The data sets are analyzed in three categories as Northern Hemisphere, Southern Hemisphere, and total FI data sets.
Atila Ozguc, Ali Kilcik, Volkan Sarp, Hülya Yeşilyaprak, Rıza Pektaş   +4 more
doaj   +1 more source

How the Great Plains Dust Bowl drought spread heat extremes around the Northern Hemisphere

Scientific Reports, 2022
Extraordinary heat extremes occurred in the 1930s in areas of the Northern Hemisphere far from the record setting heat over the US associated with the Great Plains Dust Bowl drought.
Gerald A. Meehl, Haiyan Teng, Nan Rosenbloom, Aixue Hu, Claudia Tebaldi, Guy Walton   +5 more
doaj   +1 more source

Plutella polaris Zeller, 1880 (Lepidoptera, Plutellidae) rediscovered at Svalbard, Norway, with comments on its taxonomic position

Nota Lepidopterologica, 2018
After 142 years, Plutella polaris Zeller, 1880 was rediscovered at Svalbard, Norway, in 2015. The locality and its vegetation are described. The specimen is the first female ever recorded, and its genitalia are illustrated.
Geir Søli, Leif Aarvik, Trude Magnussen
doaj   +3 more sources

Marine‐Calibrated Chronology of Southern Laurentide Ice Sheet Advance and Retreat: ∼2,000‐Year Cycles Paced by Meltwater–Climate Feedback

Geophysical Research Letters, 2023
Climatic warming following the Last Glacial Maximum caused the southern Laurentide Ice Sheet (LIS) to begin ∼2,000‐year cycles of retreat and readvance whose cause remains ambiguous.
Andrew D. Wickert, Carlie Williams, Lauren J. Gregoire, Kerry L. Callaghan, Ruža F. Ivanović, Paul J. Valdes, Lael Vetter, Carrie E. Jennings   +7 more
doaj   +1 more source

Trends and emissions of six perfluorocarbons in the Northern Hemisphere and Southern Hemisphere [PDF]

Atmospheric Chemistry and Physics, 2020
Abstract. Perfluorocarbons (PFCs) are potent greenhouse gases with global warming potentials up to several thousand times greater than CO2 on a 100-year time horizon. The lack of any significant sinks for PFCs means that they have long atmospheric lifetimes of the order of thousands of years.
E. S. Droste, K. E. Adcock, M. J. Ashfold, C. Chou, Z. Fleming, Z. Fleming, P. J. Fraser, L. J. Gooch, A. J. Hind, R. L. Langenfelds, E. Leedham Elvidge, N. Mohd Hanif, N. Mohd Hanif, S. O'Doherty, D. E. Oram, D. E. Oram, C.-F. Ou-Yang, M. Panagi, C. E. Reeves, W. T. Sturges, J. C. Laube, J. C. Laube   +21 more
openaire   +6 more sources

DEVELOPMENT OF 23 CYCLES ACTIVITY IN NORTHERN AND SOUTHERN HEMISPHERES OF THE SUN

Odessa Astronomical Publications, 2013
On an example of the 23rd cycle of solar activity the basic properties of its development in northern and southern hemispheres were researched (daily values of Wolf Sunspot Number - W, the daily values of Sun spots areas - Sp and daily values of flare ...
M. I. Ryabov, A. L. Sukharev, S. A. Lukashuk   +2 more
doaj   +1 more source

The movements of Alpine glaciers throughout the last 10,000 years as sensitive proxies of temperature and climate changes [PDF]

EPJ Web of Conferences, 2020
A brief review of the movements of Alpine glaciers throughout the Holocene in the Northern Hemisphere (European Alps) and in the Southern Hemisphere (New Zealand Southern Alps) is presented.
Kutschera Walter, Patzelt Gernot, Schaefer Joerg M., Schlüchter Christian, Steier Peter, Wild Eva Maria   +5 more
doaj   +1 more source

Seasonality of Kawasaki disease: a global perspective. [PDF]

PLoS ONE, 2013
Understanding global seasonal patterns of Kawasaki disease (KD) may provide insight into the etiology of this vasculitis that is now the most common cause of acquired heart disease in children in developed countries worldwide.Data from 1970-2012 from 25 ...
Jane C Burns, Lauren Herzog, Olivia Fabri, Adriana H Tremoulet, Xavier Rodó, Ritei Uehara, David Burgner, Emelia Bainto, David Pierce, Mary Tyree, Daniel Cayan, Kawasaki Disease Global Climate Consortium   +11 more
doaj   +1 more source

FOREST CARBON SINKS IN THE NORTHERN HEMISPHERE

Ecological Applications, 2002
There is general agreement that terrestrial systems in the Northern Hemisphere provide a significant sink for atmospheric CO2; however, estimates of the magnitude and distribution of this sink vary greatly. National forest inventories provide strong, measurement-based constraints on the magnitude of net forest carbon uptake.
Goodale, C.L., Apps, M.J., Birdsey, R.A., Field, C.B., Heath, L.S., Houghton, R.A., Jenkins, J.C., Kohlmaier, G.H., Kurz, W., Liu, S.R., Nabuurs, G.J., Nilsson, S., Shvidenko, A.Z.   +12 more
openaire   +3 more sources

Storm-Time Behaviour of Meso-Scale Field-Aligned Currents: Case Study with Three Geomagnetic Storm Events

Journal of Astronomy and Space Sciences, 2019
Challenging Minisatellite Payload (CHAMP) satellite magnetic data are used to investigate the latitudinal variation of the storm-time meso-scale field-aligned currents by defining a new metric called the FAC range.
Adero Ochieng Awuor, Paul Baki, Joseph Olwendo   +2 more
doaj   +1 more source