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Long-term trends and variability of water levels and tides in Buenos Aires and Mar del Plata, Argentina
(Frontiers Research Foundation, 2017-11)
We present an analysis of the long-term trends and variability of extreme water and tidal levels and the main tidal constituents using long-term records from two tide gauges in the wider region of the Rio de la Plata ...
Long-Term Trends and Policy Challenges in Chilean Agricultural Labor Markets
(PONTIFICIA UNIV CATOLICA CHILE, FAC AGRONOMIA INGENIERIA FORESTAL, 2021)
This paper identifies the major longterm trends in agricultural labor markets in Chile. The document shows the increasing aging, feminization, and seasonality of the agricultural labor force. Long-term projections are made ...
Possible sources of long-term variations in the mid-latitude ionosphere
(Bentham open, 2011-10)
Trends in the upper atmosphere, together with the global warming of the lower atmosphere, are part of the global change of the Earth system. In the present work, which is focused in the upper atmosphere, long-term variations ...
Trends in total ozone and the effect of the equatorial zonal wind QBO
(Elsevier, 2010-05)
Trends in total column ozone have been analyzed in terms of the equatorial zonal wind. We used zonal monthly mean total ozone from Total Ozone Mapping Spectrometer (TOMS) and monthly mean zonal wind in the equatorial ...
Long-term changes in solar quiet (Sq) geomagnetic variations related to Earth?s magnetic field secular variation
(American Geophysical Union, 2013-01)
The daily amplitude of the solar quiet (Sq) magnetic variation of the horizontal intensity, H, of observatories at low and midlatitudes is analyzed, in search of significant long‐term trends. These trends are expected based ...
Simpson's paradox in trend analysis: An example from El Leoncito airglow data
(American Geophysical Union, 2013-07)
We use our mesopause region temperature data from El Leoncito (31.8°S, 69.3°W) to illustrate how the increased length of the dataset alone does not simplify trend analysis. This is because the adequate interpretation of ...
On the inclusion of data from solar cycle 19 to estimate F2 layer characteristic long term trend
(Editrice Compositori Bologna, 2015-04)
The effect of including solar cycle 19 (1954-1964) in ionospheric trend estimation is assessed using experimental foF2 values. The dominant influenceon the F2 layer is solar EUV radiation. In fact, around 90% of inter-annual ...
Earth's magnetic field effect on MUF calculation and consequences for hmF2 trend estimates
(Elsevier, 2017-10)
Knowledge of the state of the upper atmosphere, and in particular of the ionosphere, is essential in several applications such as systems used in radio frequency communications, satellite positioning and navigation. In ...