31 citations · 57 across the 6 of their papers we have counts for
6 papers
TRAGALDABAS. First results on cosmic ray studies and their relation with the solar activity, the Earth magnetic field and the atmospheric properties
J. A. Garzón, J. Collazo, J. Cuenca-García +21
Cosmic rays originating from extraterrestrial sources are permanently arriving at Earth atmosphere, where they produce up to billions of secondary particles. The analysis of the se…
Can Core Flows inferred from Geomagnetic Field Models explain the Earth's Dynamo?
Nathanaël Schaeffer, Estelina Lora Silva, Maria Alexandra Pais
We test the ability of large scale velocity fields inferred from geomagnetic secular variation data to produce the global magnetic field of the Earth.Our kinematic dynamo calculati…
Variability modes in core flows inverted from geomagnetic field models
Alexandra Pais, Anna Morozova, Nathanaël Schaeffer
The flow of liquid metal inside the Earth's core produces the geomagnetic field and its time variations. Understanding the variability of those deep currents is crucial to improve…
Temporal Evolution of Sunspot Areas and Estimation of Related Plasma Flows
R. Gafeira, C. C. Fonte, M. A. Pais +1
The increased amount of information provided by ongoing missions such as the Solar Dynamics Observatory (SDO) represents a great challenge for the understanding of basic questions…
Variation rate of sunspot area
R. Gafeira, C. C. Fonte, M. A. Pais +1
The emergence of the magnetic field through the photosphere has multiple manifestations and sunspots are the most prominent examples of this. One of the most relevant sunspot prope…
Long-time temperature variations in Portugal over the last 140 years and the effect of the solar activity
A. L. Morozova, P. Thejll, M. A. Pais
We present the analysis of temperature variations in Portugal for 140 years (from 1865 to 2005). The two stations with the longest time series of temperature measurements (Lisbon a…