Results 21 to 30 of about 3,931 (155)

Impacts of Sea Surface Temperature and Atmospheric Teleconnection Patterns in the Northern Mid-Latitudes on Winter Extremely Cold Events in North China

open access: yesAdvances in Meteorology, 2021
The frequency distribution of winter extreme cold events (ECEs) in North China and the influences of mid-latitude sea surface temperature anomalies (SSTAs) in the Northern Hemisphere are studied.
Liping Li   +4 more
doaj   +1 more source

Theoretical study of the ionospheric dynamo region inside the South Atlantic Anomaly

open access: yesEarth and Planetary Physics, 2023
The South Atlantic Anomaly (SAA) is a region where the geomagnetic field is significantly lower than that of the surrounding area. On the basis of the models of CHAOS-7.8, Mass Spectrometer Incoherent Scatter Model (NRLMSISE-00), and International ...
SiQi Yi   +7 more
doaj   +1 more source

Implications of Updated Magnetic Anomalies for the Late Cretaceous Tectonic Evolution of Walvis Ridge

open access: yesGeophysical Research Letters, 2019
In the South Atlantic, a reorganization of the Mid‐Atlantic Ridge began before anomaly C34n (83.6 Ma) and ended before anomaly C30n (66.4 Ma), complicating tectonics of Rio Grande Rise and older Walvis Ridge (WR), which formed together at the Mid ...
S. Thoram, W. W. Sager, W. Jokat
doaj   +1 more source

Sensitivity of South America Climate to Positive Extremes of Antarctic Sea Ice [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2022
Global climate change is expected to increasingly affect climate-sensitive sectors of society, such as the economy and environment, with significant impacts on water, energy, agriculture and fisheries.
CLÁUDIA K. PARISE   +5 more
doaj   +1 more source

Heavy Rainfall Episodes in the Eastern Northeast Brazil Linked to Large-Scale Ocean-Atmosphere Conditions in the Tropical Atlantic

open access: yesAdvances in Meteorology, 2012
Relationships between simultaneous occurrences of distinctive atmospheric easterly wave (EW) signatures that cross the south-equatorial Atlantic, intense mesoscale convective systems (lifespan > 2 hour) that propagate westward over the western south ...
Yves K. Kouadio   +3 more
doaj   +1 more source

Is the Atlantic Ocean driving the recent variability in South Asian dust? [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
This study investigates the large-scale factors controlling interannual variability in dust aerosols over South Asia during 2001–2018. We use a parameter DA%, which refers to the frequency of days in a year when high dust activity is experienced over a ...
P. Banerjee   +3 more
doaj   +1 more source

THE SOUTH ATLANTIC ANOMALY (SAA)

open access: yes, 2023
The South Atlantic Anomaly (SAA) is a geophysical phenomenon characterized by the weakening of the Earth's magnetic field over the South Atlantic Ocean region. AAS has been the subject of study by many scientists around the world, due to its magnitude and potential impact on satellite-based technologies such as navigation and communications.
openaire   +1 more source

A harmonic spline magnetic main field model for Southern Africa combining ground and satellite data to describe the evolution of the South Atlantic Anomaly in this region between 2005 and 2010

open access: yesEarth, Planets and Space, 2018
CHAMP satellite and relatively densely spaced ground-based data measured over southern Africa between 2005 and 2010 are combined in a new regional, harmonic spline based, core field model.
Emmanuel Nahayo   +3 more
doaj   +1 more source

Solar cycle signatures in lightning activity [PDF]

open access: yesAtmospheric Chemistry and Physics
The cross-correlation between annual lightning frequency and solar activity and the heliospheric magnetic field (HMF) is examined on a global scale using corrected data from the World Wide Lightning Location Network (WWLLN) for the period 2009 to 2022 ...
J. Chum   +6 more
doaj   +1 more source

Outreach, Investigation, Muons, and the South Atlantic Anomaly [PDF]

open access: yesProceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019), 2019
In May of 2018 and January of 2019, a collaborative group from the University of Notre Dame in the United States and the Pontifical Catholic University of Chile, Masterclass Institutes Collaborating in the Americas IV (MICA IV), travelled south from Santiago, Chile with two overlapping goals. The first was to take cosmic ray data at different latitudes
Kenneth Cecire   +7 more
openaire   +1 more source

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