Antártida

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Re:Antártida
« Respuesta #1212 en: Sábado 11 Mayo 2019 13:33:06 pm »
https://wattsupwiththat.com/2019/05/10/climate-data-shows-no-recent-warming-in-antarctica-instead-a-slight-cooling/

Los datos no muestran ningún calentamiento en la Antártida, en los últimos años, a pesar de lo que algunos nos quieren hacer creer.



Pero aun asi es un win-win:
Si los datos muestran calentamiento, "nos estamos cargando el planeta".
Si los datos no muestran calentamiento, o muestran enfriamiento, "no se pueden extrapolar datos de una region al conjunto de la tierr perdon, planeta".
Hay un libro abierto siempre para todos los ojos: la naturaleza. Jean-Jacques Rousseau.
Pobla de Farnals-plaja. 39° 34' N, 0° 17' W - Datos de Puçol (18 msnm, a 6,4 Km de mi posición): media anual 16.5ºC, 459.9 mm/año.

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Re:Antártida
« Respuesta #1213 en: Domingo 12 Mayo 2019 13:25:26 pm »
En este punto no estaría de más recordar lo que reza el catecismo de la conjetura del calentamiento global antropogénico, tal cual lo ha expresado el cónclave superior reunido en los sagrados recintos del IPPC:
El cambio climático será especialmente poderoso en AMBOS polos, y sus graves efectos se extenderán desde ellos a todas las regiones del planeta (profecía dictada con una muy alta confianza):

IPCC AR5 WGI : Polar Regions Polar Amplification , Permafrost, Sea ice changes IPCC AR5 WGI : Polar Regions Polar Amplification , Permafrost, Sea ice changes

Polar amplification All Figures © IPCC 2013 Polar Amplification – zonal mean surface temperature warming at high latitudes exceeds global average temperature change. New temperature reconstructions and simulations of past climates show with high confidence polar amplification in response to changes in atmospheric CO2 concentration. In the absence of a strong reduction in the Atlantic Meridional Overturning, the Arctic region is projected to warm most (very high confidence)

Pues sí, el IPCC l tiene muy claro:

IPPC TAR-WG2: Polar Regions (Arctic and Antarctic)

Changes around the Antarctic Peninsula: This region has experienced spectacular retreat and collapse of ice shelves, which has been related to a southerly migration of the January 0°C isotherm resulting from regional warming. The loss of these ice shelves has few direct impacts. Projected warming is likely, however, to break up ice shelves further south on the Antarctic Peninsula, expose more bare ground, and cause changes in t e r r e strial biology, such as introduction of exotic plants and animals.

Changes in the Southern Ocean and impacts on its life: Climate change is likely to produce long-term—perhaps irreversible—changes in the physical oceanography and ecology of the Southern Ocean.

For the Antarctic continent, the models tend to predict more snow in winter and summer. Although temperatures are forecast to increase by 0.5°C, there will be little impact on melt because they will remain well below freezing, except in limited coastal localities.


Así que ya lo sabéis: ¡arrepentíos y dejad de consumir combustibles fósiles, o si no...!

Antarctic ice melting 6 times faster than it did in '80s

The ice in Antarctica is melting six times faster than it did 40 years ago, according to a new study.
This acceleration of the ice loss is a clear indication of human-caused climate change, the study authors said.
“That’s just the tip of the iceberg, so to speak,” Rignot said. “As the Antarctic ice sheet continues to melt away, we expect multi-meter sea level rise from Antarctica in the coming centuries.” In this century, a 10-foot rise is possible, he said.
Rignot said that as climate warming and ozone depletion send more ocean heat toward the Antarctic, the continent's melting ice will contribute to sea-level rise for "decades to come."
The solution to halt the melting, as recommended by the Intergovernmental Panel on Climate Change, isn't a surprise: Stop the burning of fossil fuels, which release greenhouse gases into the Earth's atmosphere and oceans
.

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« Última modificación: Domingo 12 Mayo 2019 13:34:43 pm por hrizzo »
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Re:Antártida
« Respuesta #1215 en: Sábado 01 Junio 2019 13:52:31 pm »
10 Of 10 Coastal Antarctic Stations Show Zero Warming Over Past Decades.

- Over the past few years, climate alarmists have increasingly been resorting to weather-ambulance chasing, which has necessitated the trotting of the globe in the search of weather anomalies to behold as proof of man-made climate change.
- But one place they have been avoiding like the plague is Antarctica as a number of studies have been showing the opposite of what what predicted earlier has been happening down at the South Pole, except for volcanic activity beneath parts of the Antarctic ice shelf.




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Re:Antártida
« Respuesta #1216 en: Martes 16 Julio 2019 10:05:00 am »
Scientists Find Antarctica Is Rapidly Cooling And Any Ice Sheet Melt Is Not Due To CO2, But Natural

The Antarctic Peninsula has cooled at a rate of -0.5°C per decade since the late 1990s.
West Antarctica as a whole has “slightly cooled” (or the warming has “plateaued”) over the past two decades.
East Antarctica “has not experienced any significant temperature change since the 1950s” with  ice sheet mass gains and cooling during the past 15 years.
...The surface melting of portions of the West Antarctic Ice Sheet (WAIS) has received quite a bit of attention in media circles, often accompanied by scary warnings of ice sheet collapse and catastrophic sea level rise.
These harrowing warnings often seem to arise in response to observations of glacier calving events – large glaciers fissuring and breaking off from the ice sheet.
But glaciologists know that calving events are indicative of ice sheet thickening, not thinning. Glaciers calve when the ice accumulation has become so heavy and thick that the base of the ice sheet can no longer bear the load.


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Re:Antártida
« Respuesta #1217 en: Lunes 22 Julio 2019 10:18:10 am »
Antarctica was warmer one thousand years ago — and life was OK

A new paper looks at 60 sites across Antarctica, considering everything from ice, lake and marine cores to peat and seal skins. They were particularly interested in the Medieval Warm Period, and researched back to 600AD.  During medieval times (1000-1200 AD) they estimate Antarctica as a whole was hotter than it is today. Antarctica was even warmer still  — during the dark ages circa 700AD.



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Re:Antártida
« Respuesta #1218 en: Jueves 29 Agosto 2019 16:53:09 pm »
About Antarctica

This post is a critical examination of various claims made by climate science about the impact of climate change on antarctica and of the evidence for AGW claimed to be found in data from antarctica.



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Re:Antártida
« Respuesta #1219 en: Miércoles 04 Septiembre 2019 12:01:58 pm »
Extensión de hielo en la Antártida



Guadix, Granada

Año hidrológico 2009/2010: 665 mm.
Año hidrológico 2010/2011: 374 mm.
Año hidrológico 2011/2012: 169 mm.
Año hidrológico 2012/2013: 491 mm.

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Re:Antártida
« Respuesta #1220 en: Miércoles 04 Septiembre 2019 12:18:28 pm »
Rollos de película de hace 50 años confirman el deshielo antártico

https://elpais.com/elpais/2019/09/02/ciencia/1567438429_257733.html?ssm=TW_CC
BENASQUE (Pirineo aragonés). A 1.140msnm 
Zaragoza (Depresión del Ebro). A  220msnm 
       
La comarcalización mola mogollón; pero la Geografía mola más todavía.
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Datos de Benasque en tiempo real: http://casabringasort.com/estacion-meteorologica/

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Re:Antártida
« Respuesta #1221 en: Miércoles 04 Septiembre 2019 14:52:46 pm »
Rollos de película de hace 50 años confirman el deshielo antártico

https://elpais.com/elpais/2019/09/02/ciencia/1567438429_257733.html?ssm=TW_CC
Se puede observar claramente en la grafica de arriba aunque solo llegue a 40 años.
Saludos.

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Re:Antártida
« Respuesta #1222 en: Miércoles 06 Noviembre 2019 11:58:08 am »
A new paper shows West Antarctica (WAIS), SSTs near South Chile, and the entire region between 50-70°S have not warmed since the early 1980s.

The region was 2°C warmer 1000 years ago and today's temps (12.1°C) are the coldest of the last 2300 years

http://www.dgf.uchile.cl/rene/PUBS/Collins_et_al-2019-Paleoceanography_and_Paleoclimatology.pdf





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Re:Antártida
« Respuesta #1223 en: Viernes 31 Enero 2020 08:25:24 am »
Thwaites Glacier: Why Did The BBC Fail To Mention The Volcanoes Underneath?
 
Scientists have known for years that subglacial volcanoes and other geothermal “hotspots” are contributing to the melting of the Thwaites Glacier. Why did the BBC fail to mention these facts in its recent report?

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:viejito: Heber Rizzo
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Green power, black death
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Albert Einstein