Este site dedica-se às aves e a relação com o Homem. O canto do Canário Timbrado, Canário Harz Roller, do canário Malinois e outros canários.. O objectivo de site é contar as aventuras e os arcos de descobertas relacionados com Homem e as aves. This site is dedicated to birds.singing canaries song,canaries,canaries de chant. carmelita=carmelo=jardim
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14 de julho de 2008
3 de julho de 2008
28 de junho de 2008
North Pole could be ice-free this summer, scientists say
The North Pole may be briefly ice-free by September as global warming melts away Arctic sea ice, according to scientists from the National Snow and Ice Data Center in Boulder, Colorado.
"We kind of have an informal betting pool going around in our center and that betting pool is 'does the North Pole melt out this summer?' and it may well," said the center's senior research scientist, Mark Serreze.
It's a 50-50 bet that the thin Arctic sea ice, which was frozen in autumn, will completely melt away at the geographic North Pole, Serreze said.
The ice retreated to a record level in September when the Northwest Passage, the sea route through the Arctic Ocean, opened briefly for the first time in recorded history.
"What we've seen through the past few decades is the Arctic sea ice cover is becoming thinner and thinner as the system warms up," Serreze said.
Specific weather patterns will determine whether the North Pole's ice cover melts completely this summer, he said."Last year, we had sort of a perfect weather pattern to get rid of ice to open up that Northwest Passage," Serreze said. "This year, a different pattern can set up. so maybe we'll preserve some ice there. We're in a wait-and-see mode right now. We'll see what happens."
The brief lack of ice at the top of the globe will not bring any immediate consequences, he said.
"From the viewpoint of the science, the North Pole is just another point in the globe, but it does have this symbolic meaning," Serreze said. "There's supposed to be ice at the North Pole. The fact that we may not have any by the end of this summer could be quite a symbolic change."
Serreze said it's "just another indicator of the disappearing Arctic sea ice cover" but that it is happening so soon is "just astounding to me."
"Five years ago, to think that we'd even be talking about the possibility of the North Pole melting out in the summer, I would have never thought it," he said.
The melting, however, has been long seen as inevitable, he said.
"If you talked to me or other scientists just a few years ago, we were saying that we might lose all or most of the summer sea ice cover by anywhere from 2050 to 2100," Serreze said. "Then, recently, we kind of revised those estimates, maybe as early as 2030. Now, there's people out there saying it might be even before that. So, things are happening pretty quick up there."
Serreze said those who suggest that the Arctic meltdown is just part of a historic cycle are wrong.
"It's not cyclical at this point. I think we understand the physics behind this pretty well," he said. "We've known for at least 30 years, from our earliest climate models, that it's the Arctic where we'd see the first signs of global warming.
"It's a situation where we hate to say we told you so, but we told you so," he said.
Serreze said the Arctic sea ice will not be the same for decades.
"If we had a few cold years in a row, we could put sort of a temporary damper on it, but I think at this point going to an ice-free Arctic Ocean is inevitable," he said. "I don't think we can stop that now."
Reduced greenhouse gas emissions could "cool things down a bit," he said.
"It would recover fairly quickly, but it's just not going to happen for a while," he said. "I think we're committed at this point."
There are some positive aspects to the ice melting, he said. Ships could use the Northwest Passage to save time and energy by no longer having to travel through the Panama Canal or around Cape Horn.
"There's also, or course, oil at the bottom of the Arctic Ocean," he said. "Now, the irony of that is kind of clear, but the fact that we are opening up the Arctic Ocean does make it more accessible."
It's a 50-50 bet that the thin Arctic sea ice, which was frozen in autumn, will completely melt away at the geographic North Pole, Serreze said.
The ice retreated to a record level in September when the Northwest Passage, the sea route through the Arctic Ocean, opened briefly for the first time in recorded history.
"What we've seen through the past few decades is the Arctic sea ice cover is becoming thinner and thinner as the system warms up," Serreze said.
Specific weather patterns will determine whether the North Pole's ice cover melts completely this summer, he said."Last year, we had sort of a perfect weather pattern to get rid of ice to open up that Northwest Passage," Serreze said. "This year, a different pattern can set up. so maybe we'll preserve some ice there. We're in a wait-and-see mode right now. We'll see what happens."
The brief lack of ice at the top of the globe will not bring any immediate consequences, he said.
"From the viewpoint of the science, the North Pole is just another point in the globe, but it does have this symbolic meaning," Serreze said. "There's supposed to be ice at the North Pole. The fact that we may not have any by the end of this summer could be quite a symbolic change."
Serreze said it's "just another indicator of the disappearing Arctic sea ice cover" but that it is happening so soon is "just astounding to me."
"Five years ago, to think that we'd even be talking about the possibility of the North Pole melting out in the summer, I would have never thought it," he said.
The melting, however, has been long seen as inevitable, he said.
"If you talked to me or other scientists just a few years ago, we were saying that we might lose all or most of the summer sea ice cover by anywhere from 2050 to 2100," Serreze said. "Then, recently, we kind of revised those estimates, maybe as early as 2030. Now, there's people out there saying it might be even before that. So, things are happening pretty quick up there."
Serreze said those who suggest that the Arctic meltdown is just part of a historic cycle are wrong.
"It's not cyclical at this point. I think we understand the physics behind this pretty well," he said. "We've known for at least 30 years, from our earliest climate models, that it's the Arctic where we'd see the first signs of global warming.
"It's a situation where we hate to say we told you so, but we told you so," he said.
Serreze said the Arctic sea ice will not be the same for decades.
"If we had a few cold years in a row, we could put sort of a temporary damper on it, but I think at this point going to an ice-free Arctic Ocean is inevitable," he said. "I don't think we can stop that now."
Reduced greenhouse gas emissions could "cool things down a bit," he said.
"It would recover fairly quickly, but it's just not going to happen for a while," he said. "I think we're committed at this point."
There are some positive aspects to the ice melting, he said. Ships could use the Northwest Passage to save time and energy by no longer having to travel through the Panama Canal or around Cape Horn.
"There's also, or course, oil at the bottom of the Arctic Ocean," he said. "Now, the irony of that is kind of clear, but the fact that we are opening up the Arctic Ocean does make it more accessible."
31 de maio de 2008
Doenças respiratórias lideram internamento até aos nove anos
"As doenças do aparelho respiratório são a principal causa de internamento hospitalar das crianças até aos nove anos, de acordo com dados que servem de base à proposta da nova Carta Hospitalar de Pediatria.
Elaborada pela Comissão Nacional de Saúde da Criança e Adolescente (CNSCA), a Carta Hospitalar de Pediatria traça as linhas orientadoras da concepção de serviços hospitalares para crianças e adolescentes, encontrando-se em discussão pública até sábado.
Elaborada pela Comissão Nacional de Saúde da Criança e Adolescente (CNSCA), a Carta Hospitalar de Pediatria traça as linhas orientadoras da concepção de serviços hospitalares para crianças e adolescentes, encontrando-se em discussão pública até sábado.
O documento leva em conta a procura dos serviços hospitalares de pediatria.
Segundo dados que constam do documento, o número total de internamentos de crianças até aos 17 anos baixou, de 209.044 em 2003 para 195.130, em 2006. Mais de um quinto dos internamentos (20,7%) registou-se no primeiro ano de vida, 28,6% entre um e quatro anos, 23,2% dos cinco aos nove anos, 16,5% dos 10 aos 14 anos e 11,1% dos 15 aos 17 anos.
Até aos nove anos, as doenças do aparelho respiratório foram a principal causa de internamento hospitalar em 2006.
Segundo dados que constam do documento, o número total de internamentos de crianças até aos 17 anos baixou, de 209.044 em 2003 para 195.130, em 2006. Mais de um quinto dos internamentos (20,7%) registou-se no primeiro ano de vida, 28,6% entre um e quatro anos, 23,2% dos cinco aos nove anos, 16,5% dos 10 aos 14 anos e 11,1% dos 15 aos 17 anos.
Até aos nove anos, as doenças do aparelho respiratório foram a principal causa de internamento hospitalar em 2006.
Nesse ano, foram internadas por este motivo 6.382 crianças com menos de um ano de idade, 8.701 entre um e quatro anos e 7.591 com idades entre os cinco e os nove anos....."
26 de maio de 2008
7 de maio de 2008
De lege agraria nova
Ambiente: Comissão envia severos avisos a Portugal e Espanha por deficiências na protecção da natureza"
Como adiantou a Sala de Imprensa da U.E., "A Comissão Europeia vai enviar cartas de notificação de incumprimento a Portugal e Espanha por não terem tomado medidas suficientes para proteger a natureza. No caso português, o problema reside na autorização dada a projectos de complexos turísticos em zonas protegidas dos concelhos de Grândola e Alcácer do Sal.
No caso espanhol, o problema reside no não cumprimento de uma decisão do Tribunal de Justiça das Comunidades Europeias, que exige que a Espanha designe zonas protegidas suficientes para a conservação e a protecção das aves selvagens em várias regiões do país.O Comissário europeu para o ambiente,
Stavros Dimas, afirmou: 'A Europa depende da sua biodiversidade para inúmeros serviços ecológicos, desde a purificação da água e do ar até aos recursos florestais
.
Essa biodiversidade está ameaçada, sendo urgente protegê-la. Espanha e Portugal devem cumprir a legislação comunitária de protecção da natureza e manter a integridade da rede Natura 2000. São medidas fundamentais para que a União Europeia possa cumprir o seu objectivo de travar a perda da biodiversidade até 2010.
Este Comunicado foi distribuído nas Línguas Portuguesa e Espanhola.
De lege agraria nova
Como adiantou a Sala de Imprensa da U.E., "A Comissão Europeia vai enviar cartas de notificação de incumprimento a Portugal e Espanha por não terem tomado medidas suficientes para proteger a natureza. No caso português, o problema reside na autorização dada a projectos de complexos turísticos em zonas protegidas dos concelhos de Grândola e Alcácer do Sal.
No caso espanhol, o problema reside no não cumprimento de uma decisão do Tribunal de Justiça das Comunidades Europeias, que exige que a Espanha designe zonas protegidas suficientes para a conservação e a protecção das aves selvagens em várias regiões do país.O Comissário europeu para o ambiente,
Stavros Dimas, afirmou: 'A Europa depende da sua biodiversidade para inúmeros serviços ecológicos, desde a purificação da água e do ar até aos recursos florestais
.
Essa biodiversidade está ameaçada, sendo urgente protegê-la. Espanha e Portugal devem cumprir a legislação comunitária de protecção da natureza e manter a integridade da rede Natura 2000. São medidas fundamentais para que a União Europeia possa cumprir o seu objectivo de travar a perda da biodiversidade até 2010.Este Comunicado foi distribuído nas Línguas Portuguesa e Espanhola.
De lege agraria nova
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