Etiqueta: cambio climático

EL ARCHIVO DE LA VERDAD DEL CLIMA DE CFACT: 2014

18. octubre 2014

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EL ARCHIVO DE LA VERDAD DEL CLIMA DE CFACT: 2014

(CFACT: Committee For A Constructive Tomorrow, www.CFACT.org; Washington DC) Estimados amigos, Una sociedad libre y próspera requiere ciencia bien fundamentada, abundante energía y un medioambiente limpio. Los grupos radicales de presión de los Verdes están actualmente teniendo mayor éxito que nunca al utilizar los medios para enlodar el discurso público en estas áreas claves con información falsa y engañosa. Lamentablemente, en la era de Obama, están escribiendo con demasiada frecuencia su peligrosa ideología en la política pública de EUA. El evitar la propaganda y la mala información[...] 

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La Pequeña Edad de Hielo en la Antártida Occidental (1)

1. octubre 2012

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La Pequeña Edad de Hielo en la Antártida Occidental (1)

Referencia: Orsi, A.J., Cornuelle, B.D. y Severinghaus J.P. 2012. Little Ice Age cold interval in West Antarctica: Evidence from borehole temperature at the West Antarctic Ice Sheet (WAIS) Divide. Geophysical Research Letters 39: 10.1029/2012GL051260.   En la introducción de su estudio, Orsi et al. (2012) escriben que “el Hemisferio Norte ha sufrido un enfriamiento extensamente distribuido desde alrededor de 1400 a 1850 conocido generalmente como la Pequeña Edad de Hielo (PEH),” que describen como “la última de una serie de centenarias oscilaciones en el clima,” citando[...] 

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Las olas de calor en climas extremos

1. julio 2012

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Las olas de calor en climas extremos

A pesar de que los estudios recientes basados en modelos sugieren que el calentamiento global causado por la actividad del hombre es la causa más probable de la ola de calor que azotó a Rusia en el 2010, éstos no explican de manera adecuada el mecanismo de muchas de las olas de calor de su historia pasada que no pudieron deberse al calentamiento global reciente debido a la actividad del hombre. Así, hasta el momento, cualquier relación entre las futuras olas de calos y el calentamiento global queda como materia cuestionable. Extreme Weather Heat Waves (26 June 2012) Otto, F.E.L., Massey,[...] 

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Variabilidad climática milenaria: ¡Esa es la norma!

30. junio 2012

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Variabilidad climática milenaria: ¡Esa es la norma!

Un informe especial en Deep-Sea Research II aporta con más datos a la gran cantidad de evidencias de una variación milenaria de cambios climáticos entre condiciones más cálidas y más frías. Millennial-Scale Climate Variability: It’s the Norm! (27 June 2012) Harada, N., Takahashi, K., Timmermann, A. and Sakamoto, T. 2012a. Climate change dynamics of present and past in the North Pacific and its northern marginal seas. Deep-Sea Research II 61-64: 1-3. Harada et al. (2012a), in their preface to a special issue of Deep-Sea Research II, briefly highlight what the issue has to say about “the[...] 

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Astronauts and scientists send letter to NASA: Stop global warming advocacy

11. abril 2012

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Astronauts and scientists send letter to NASA: Stop global warming advocacy

Joint letter from 49 former NASA scientists and astronauts to the current NASA Administrator blasts agency’s policy of ignoring empirical evidence about global warming. Joint letter to NASA Administrator blasts agency’s policy of ignoring empirical evidence HOUSTON, TX – April 10, 2012. 49 former NASA scientists and astronauts sent a letter to NASA Administrator Charles Bolden last week admonishing the agency for it’s role in advocating a high degree of certainty that man-made CO2 is a major cause of climate change while neglecting empirical evidence that calls the theory into question. The[...] 

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Healthy polar bear count confounds doomsayers

9. abril 2012

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Healthy polar bear count confounds doomsayers

The debate about climate change and its impact on polar bears has intensified with the release of a survey that shows the bear population in a key part of northern Canada is far larger than many scientists thought, and might be growing. The number of bears along the western shore of Hudson Bay, believed to be among the most threatened bear subpopulations, stands at 1,013 and could be even higher, according to the results of an aerial survey released Wednesday by the Government of Nunavut. That’s 66 per cent higher than estimates by other researchers who forecasted the numbers would fall to as[...] 

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What Thawed the Last Ice Age?

9. abril 2012

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What Thawed the Last Ice Age?

The relatively pleasant global climate of the last 10,000 years is largely thanks to higher levels of atmospheric carbon dioxide By David Biello  | April 4, 2012 ICE MELT: Carbon dioxide likely trapped the extra heat responsible for the end of the last Ice Age, according to a new analysis. Image: Courtesy of Michele Koppes, University of British Columbia Roughly 20,000 years ago the great ice sheets that buried much of Asia, Europe and North America stopped their creeping advance. Within a few hundred years sea levels in some places had risen by as much as 10 meters—more than if the ice sheet[...] 

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Ecología: conferencia propone nuevo paradigma

26. marzo 2012

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Ecología: conferencia propone nuevo paradigma

En la conferencia “Planeta bajo presión” –26 al 29 de marzo en Londres–, 3.000 expertos propondrán abordar los problemas ecológicos con una visión de conjunto, en lugar de tratar sus distintos aspectos de manera aislada. En junio, cuando tenga lugar la Cumbre de la Tierra en Río de Janeiro, Brasil –promovida bajo el nombre Río+20–, se celebrarán los veinte años de la primera Conferencia de Desarrollo Sustentable de las Naciones Unidas, un encuentro del cual surgió el Programa 21 y que preparó el camino para las convenciones de la o­nU alusivas al clima y a la biodiversidad.[...] 

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Who Are the Environmentalist Extremists? by Marita Noon on March 19, 2012

20. marzo 2012

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Who Are the Environmentalist Extremists?  by Marita Noon on March 19, 2012

Second of a three-part series of excerpts from Energy Freedom by Marita Noon Originally published in the Washington Examiner Part 1, “Big Green Wants To Repeal the Industrial Revolution,” is available here. So who are all these evil-appearing “environmentalists?” Should all Birkenstock wearers be suspect? What about the lady at the grocery store with the canvas sack for her purchases? There is a difference between those of us who care for the earth, want to use it wisely, and believe in recycling—and those who are in decision-making positions, setting policy and/or funding the programs.[...] 

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No Need to Panic About Global Warming

2. febrero 2012

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No Need to Panic About Global Warming

There’s no compelling scientific argument for drastic action to ‘decarbonize’ the world’s economy. Editor’s Note: The following has been signed by the 16 scientists listed at the end of the article: A candidate for public office in any contemporary democracy may have to consider what, if anything, to do about “global warming.” Candidates should understand that the oft-repeated claim that nearly all scientists demand that something dramatic be done to stop global warming is not true. In fact, a large and growing number of distinguished scientists and engineers[...] 

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