Results 21 to 30 of about 301,665 (287)

A tropical mechanism for Northern Hemisphere deglaciation [PDF]

Geochemistry, Geophysics, Geosystems, 2003
We investigate the role of the tropics in the melting and reforming of the Laurentide ice sheet on glacial timescales using an atmospheric general circulation model. It is found that warming of tropical sea surface temperatures (SSTs) from glacial boundary conditions, as observed at the end of glacial periods, causes a large increase in summer ...
Rodgers, K., Lohmann, Gerrit, Lorenz, S., Schneider, Robert, Henderson, G.   +4 more
openaire   +5 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

Ice particle production in mid-level stratiform mixed-phase clouds observed with collocated A-Train measurements [PDF]

Atmospheric Chemistry and Physics, 2018
Collocated A-Train CloudSat radar and CALIPSO lidar measurements between 2006 and 2010 are analyzed to study primary ice particle production characteristics in mid-level stratiform mixed-phase clouds on a global scale.
D. Zhang, Z. Wang, P. Kollias, P. Kollias, A. M. Vogelmann, K. Yang, T. Luo   +6 more
doaj   +1 more source

Evolution of Pliocene climate cyclicity at Hole 806B (5-2 Ma); oxygen isotope record [PDF]

, 1993
A detailed Pliocene oxygen isotope record from the Ontong Java Plateau, based on measurements of the surface-dwelling planktonic foraminifer Globigerinoides sacculifer, was produced for the period from 5 to 2 Ma. The record documents major long and short-
Backman, Jan, Jansen, Eystein, Leckie, R. Mark, Mayer, Larry A., Takayama, Toshiaki   +4 more
core   +2 more sources

Variations of radiocarbon in tree rings: southern hemisphere offset preliminary results [PDF]

, 1998
The Queen's University of Belfast, Northern Ireland and University of Waikato, Hamilton, New Zealand radiocarbon laboratories have undertaken a series of high-precision measurements on decadal samples of dendrochronologically dated oak (Quercus patrea ...
Baillie, Mike G.L., Brown, David, Higham, Thomas F.G., Hogg, Alan G., Hoper, S.T., McCormac, F.G., Palmer, Jonathan G., Pilcher, J.R., Xiong, Limin   +8 more
core   +2 more sources

A hemispherical dynamo model : Implications for the Martian crustal magnetization

, 2013
Mars Global Surveyor measurements revealed that the Martian crust is strongly magnetized in the southern hemisphere while the northern hemisphere is virtually void of magnetization. Two possible reasons have been suggested for this dichotomy: A once more
Dietrich, Wieland, Wicht, Johannes
core   +1 more source

SHCal13 Southern Hemisphere calibration, 0–50,000 years cal BP [PDF]

, 2013
The Southern Hemisphere SHCal04 radiocarbon calibration curve has been updated with the addition of new data sets extending measurements to 2145 cal BP and including the ANSTO Younger Dryas Huon pine data set.
Blackwell, Paul G., Buck, Caitlin E., Guilderson, Thomas P., Heaton, Timothy J., Hogg, Alan G., Hua, Quan, Niu, Mu, Palmer, Jonathan G., Reimer, Paula J., Reimer, Ron W., Turney, Chris S.M., Zimmerman, Susan R. H.   +11 more
core   +2 more sources

Forcing of Northern Hemisphere Climate Trends

Journal of the Atmospheric Sciences, 2003
The impact of observed global SST trends during the second half of the twentieth century on the Northern Hemisphere extratropical winter atmospheric circulation is investigated using ensembles of simulations with the Center for Ocean‐Land‐Atmosphere Studies (COLA) atmospheric GCM.
Schneider, E., Bengtsson, L., Hu, Z.
openaire   +2 more sources

Pre-LGM Northern Hemisphere ice sheet topography [PDF]

Climate of the Past, 2013
We here reconstruct the paleotopography of Northern Hemisphere ice sheets during the glacial maxima of marine isotope stages (MIS) 5b and 4.We employ a combined approach, blending geologically based reconstruction and numerical modeling, to arrive at ...
J. Kleman, J. Fastook, K. Ebert, J. Nilsson, R. Caballero   +4 more
doaj   +1 more source

North-South Distribution of Solar Flares during Cycle 23

, 2005
In this paper, we investigate the spatial distribution of solar flares in the northern and southern hemisphere of the Sun that occurred during the period 1996 to 2003.
A. Joshi, B. Joshi, B. Joshi, B. Komitov, Bhuwan Joshi, D. B. Swinson, G. Vizoso, H. A. Garcia, J.-R. Roy, K.-J. Li, M. N. Gnevyshev, M. Temmer, N. Gopalswamy, P. K. Manoharan, P. Pant, R. Howard, R. Knaack, R. Knaack, S. Knoška, T. Ataç, T. Ataç, V. K. Verma   +21 more
core   +1 more source