Archiv: Ozeane / oceans


26.04.2024 - 02:52 [ Space.com ]

Earth got hammered by cosmic rays 41,000 years ago due to a weak magnetic field

(24 April 2024)

The question is, Do periods of low magnetosphere intensity also correlate with major upheavals in Earth‘s biosphere, the complete zone of our planet over which life exists, ranging from mountaintops to the deepest ocean trenches?

„Understanding these extreme events is important for their occurrence in the future, space climate predictions, and assessing the effects on the environment and on the Earth system,“ Sanja Panovska, a scientist at GFZ Potsdam in Germany, said in a statement.

26.04.2024 - 00:30 [ Geophysical Research Letters 35(16) / researchgate.net ]

Magnetic effect on CO 2 solubility in seawater: A possible link between geomagnetic field variations and climate

(August 2008)

Correlations between geomagnetic-field and climate parameters have been suggested repeatedly, but possible links are controversially discussed. Here we test if weak (Earth-strength) magnetic fields can affect climatically relevant properties of seawater. We found the solubility of air in seawater to be by 15% lower under reduced magneticfield (20 mT) compared to normal field conditions (50 mT). The magnetic-field effect on CO2 solubility is twice as large, from which we surmise that geomagnetic field variations modulate the carbon exchange between atmosphere and ocean. A 1% reduction in magnetic dipole moment may release up to ten times more CO2 from the surface ocean than is emitted by subaerial volcanism.

24.04.2023 - 12:25 [ Geophysical Research Letters 35(16) / researchgate.net ]

Magnetic effect on CO 2 solubility in seawater: A possible link between geomagnetic field variations and climate

(August 2008)

Correlations between geomagnetic-field and climate parameters have been suggested repeatedly, but possible links are controversially discussed. Here we test if weak (Earth-strength) magnetic fields can affect climatically relevant properties of seawater. We found the solubility of air in seawater to be by 15% lower under reduced magneticfield (20 mT) compared to normal field conditions (50 mT). The magnetic-field effect on CO2 solubility is twice as large, from which we surmise that geomagnetic field variations modulate the carbon exchange between atmosphere and ocean. A 1% reduction in magnetic dipole moment may release up to ten times more CO2 from the surface ocean than is emitted by subaerial volcanism.

01.11.2021 - 08:24 [ theGuardian.com ]

Cop26 summit at serious risk of failure, says Boris Johnson

In a blunt admission after two days of preliminary talks at the G20 meeting of world leaders, the prime minister conceded little progress had been made – and the conference is not on track to achieve a deal that keeps the goal alive. He put the chances of success as “six out of 10”.

“Currently, let’s be in no doubt, we are not going to hit it and we have to be honest with ourselves,” he said. The commitments being made so far were a “drop in the rapidly warming ocean”.

25.10.2021 - 16:58 [ Geophysical Research Letters 35(16) / researchgate.net ]

Magnetic effect on CO 2 solubility in seawater: A possible link between geomagnetic field variations and climate

(August 2008)

Correlations between geomagnetic-field and climate parameters have been suggested repeatedly, but possible links are controversially discussed. Here we test if weak (Earth-strength) magnetic fields can affect climatically relevant properties of seawater. We found the solubility of air in seawater to be by 15% lower under reduced magneticfield (20 mT) compared to normal field conditions (50 mT). The magnetic-field effect on CO2 solubility is twice as large, from which we surmise that geomagnetic field variations modulate the carbon exchange between atmosphere and ocean. A 1% reduction in magnetic dipole moment may release up to ten times more CO2 from the surface ocean than is emitted by subaerial volcanism.

04.10.2021 - 05:20 [ Geophysical Research Letters 35(16) / researchgate.net ]

Magnetic effect on CO 2 solubility in seawater: A possible link between geomagnetic field variations and climate

(August 2008)

Correlations between geomagnetic-field and climate parameters have been suggested repeatedly, but possible links are controversially discussed. Here we test if weak (Earth-strength) magnetic fields can affect climatically relevant properties of seawater. We found the solubility of air in seawater to be by 15% lower under reduced magneticfield (20 mT) compared to normal field conditions (50 mT). The magnetic-field effect on CO2 solubility is twice as large, from which we surmise that geomagnetic field variations modulate the carbon exchange between atmosphere and ocean. A 1% reduction in magnetic dipole moment may release up to ten times more CO2 from the surface ocean than is emitted by subaerial volcanism.

20.09.2021 - 05:42 [ Geophysical Research Letters 35(16) / researchgate.net ]

Magnetic effect on CO 2 solubility in seawater: A possible link between geomagnetic field variations and climate

(August 2008)

Correlations between geomagnetic-field and climate parameters have been suggested repeatedly, but possible links are controversially discussed. Here we test if weak (Earth-strength) magnetic fields can affect climatically relevant properties of seawater. We found the solubility of air in seawater to be by 15% lower under reduced magneticfield (20 mT) compared to normal field conditions (50 mT). The magnetic-field effect on CO2 solubility is twice as large, from which we surmise that geomagnetic field variations modulate the carbon exchange between atmosphere and ocean. A 1% reduction in magnetic dipole moment may release up to ten times more CO2 from the surface ocean than is emitted by subaerial volcanism.

20.09.2021 - 05:40 [ Yahoo.com ]

Vital role of ocean in upcoming COP 26 highlighted by world leaders as UN Global Compact launches Ocean Stewardship Coalition

UNITED NATIONS, New York, 20 September 2021 — With less than two months until COP 26, the United Nations Global Compact today launched the Ocean Stewardship Coalition to address the twin crises of biodiversity and climate change. Research suggests that ocean mitigation solutions could reduce the emissions gap by up a fifth on a 1.5° C pathway by 2050.

10.08.2021 - 10:01 [ Geophysical Research Letters 35(16) / researchgate.net ]

Magnetic effect on CO 2 solubility in seawater: A possible link between geomagnetic field variations and climate

(August 2008)

Correlations between geomagnetic-field and climate parameters have been suggested repeatedly, but possible links are controversially discussed. Here we test if weak (Earth-strength) magnetic fields can affect climatically relevant properties of seawater. We found the solubility of air in seawater to be by 15% lower under reduced magneticfield (20 mT) compared to normal field conditions (50 mT). The magnetic-field effect on CO2 solubility is twice as large, from which we surmise that geomagnetic field variations modulate the carbon exchange between atmosphere and ocean. A 1% reduction in magnetic dipole moment may release up to ten times more CO2 from the surface ocean than is emitted by subaerial volcanism.

10.08.2021 - 09:58 [ Ludwig Maximilian Universität München ]

Wenn ein Treibhausgas baden geht: Wie das Erdmagnetfeld unser Klima beeinflusst

(6. Oktober 2008)

Die Ergebnisse zeigten, dass selbst kleine Veränderungen des Magnetfelds die Löslichkeit von Gasen im Wasser verändern. „Wenn das Magnetfeld schwächer war, löste sich 15 Prozent weniger Luft im Wasser als bei einem stärkeren Magnetfeld“, erläutert Winklhofer. „Für Kohlendioxid war der beobachtete Effekt sogar doppelt so stark.“

15.07.2021 - 07:28 [ Carl Sagan, George Mullen / University of Texas at Austin ]

Earth and Mars: Evolution of Atmospheres and Surface Temperatures

(7. Juli 1972)

Indeed, detailed global climatic models (17) suggest that a relative increase in A of only 2 percent is enough to induce extensive glaciation on Earth, which implies that the present climate is extremely sensitive to albedo. This leaves changes in atmospheric composition as a possible explanation. Major variations in the CO2 abundance will have only minor greenhouse effects because the strongest bands are nearly saturated. A change in the present CO2 abundance by a factor of 2 will produce directly a 2° variation in surface temperature (18). The CO2 abundance is highly controlled by silicate-carbonate equilibria; by buffering with seawater, which contains almost 100 times the atmospheric CO2; and by the respiration and photosynthesis feedback loop (19).

15.07.2021 - 07:23 [ Ludwig Maximilian Universität München ]

Wenn ein Treibhausgas baden geht: Wie das Erdmagnetfeld unser Klima beeinflusst

(6. Oktober 2008)

Die Ergebnisse zeigten, dass selbst kleine Veränderungen des Magnetfelds die Löslichkeit von Gasen im Wasser verändern. „Wenn das Magnetfeld schwächer war, löste sich 15 Prozent weniger Luft im Wasser als bei einem stärkeren Magnetfeld“, erläutert Winklhofer. „Für Kohlendioxid war der beobachtete Effekt sogar doppelt so stark.“

21.02.2021 - 14:10 [ Carl Sagan, George Mullen / University of Texas at Austin ]

Earth and Mars: Evolution of Atmospheres and Surface Temperatures

(7. Juli 1972)

Indeed, detailed global climatic models (17) suggest that a relative increase in A of only 2 percent is enough to induce extensive glaciation on Earth, which implies that the present climate is extremely sensitive to albedo. This leaves changes in atmospheric composition as a possible explanation. Major variations in the CO2 abundance will have only minor greenhouse effects because the strongest bands are nearly saturated. A change in the present CO2 abundance by a factor of 2 will produce directly a 2° variation in surface temperature (18). The CO2 abundance is highly controlled by silicate-carbonate equilibria; by buffering with seawater, which contains almost 100 times the atmospheric CO2; and by the respiration and photosynthesis feedback loop (19).

21.02.2021 - 13:55 [ Ludwig Maximilian Universität München ]

Wenn ein Treibhausgas baden geht: Wie das Erdmagnetfeld unser Klima beeinflusst

(6. Oktober 2008)

Die Ergebnisse zeigten, dass selbst kleine Veränderungen des Magnetfelds die Löslichkeit von Gasen im Wasser verändern. „Wenn das Magnetfeld schwächer war, löste sich 15 Prozent weniger Luft im Wasser als bei einem stärkeren Magnetfeld“, erläutert Winklhofer. „Für Kohlendioxid war der beobachtete Effekt sogar doppelt so stark.“

21.02.2021 - 13:52 [ Geophysical Research Letters 35(16) / researchgate.net ]

Magnetic effect on CO 2 solubility in seawater: A possible link between geomagnetic field variations and climate

(August 2008)

Correlations between geomagnetic-field and climate parameters have been suggested repeatedly, but possible links are controversially discussed. Here we test if weak (Earth-strength) magnetic fields can affect climatically relevant properties of seawater. We found the solubility of air in seawater to be by 15% lower under reduced magneticfield (20 mT) compared to normal field conditions (50 mT). The magnetic-field effect on CO2 solubility is twice as large, from which we surmise that geomagnetic field variations modulate the carbon exchange between atmosphere and ocean. A 1% reduction in magnetic dipole moment may release up to ten times more CO2 from the surface ocean than is emitted by subaerial volcanism.

20.11.2020 - 17:52 [ France24 ]

New Chinese submersible reaches Earth‘s deepest ocean trench

The „Fendouzhe“, or „Striver“, descended more than 10,000 metres (about 33,000 feet) into the submarine trench in the western Pacific Ocean with three researchers on board, state broadcaster CCTV said.

15.09.2020 - 12:32 [ BBC ]

Venus clouds ‚might harbour life‘

(25.05.2004)

„Current theories suggest that Venus and the Earth may have started out alike. There might have been a lot of water on Venus and there might have been a lot of carbon dioxide on Earth,“ Professor Ingersoll explained.

But all that was to change. On Earth, life in the oceans took in carbon dioxide and turned it into limestone. On Venus, 30% closer to the Sun, any oceans boiled away and the water vapour added to the runaway greenhouse effect.

29.07.2020 - 07:01 [ NIKKEI Asian Review ]

Chile picks Japan‘s trans-Pacific cable route in snub to China

Japan‘s route beat out a pitch by China that would have made Shanghai the final landing point. This decision comes amid a U.S. pressure campaign to keep China out of global telecommunication projects.

11.06.2020 - 14:15 [ CGTN ]

China successfully launches new ocean observation satellite

A Long March-2C rocket, carrying the satellite HY-1D, lifted off at 2:31 a.m. (Beijing Time), according to the China National Space Administration (CNSA)

22.01.2020 - 22:09 [ Geophysical Research Letters 35(16) / researchgate.net ]

Magnetic effect on CO 2 solubility in seawater: A possible link between geomagnetic field variations and climate

(August 2008)

Correlations between geomagnetic-field and climate parameters have been suggested repeatedly, but possible links are controversially discussed. Here we test if weak (Earth-strength) magnetic fields can affect climatically relevant properties of seawater. We found the solubility of air in seawater to be by 15% lower under reduced magneticfield (20 mT) compared to normal field conditions (50 mT). The magnetic-field effect on CO2 solubility is twice as large, from which we surmise that geomagnetic field variations modulate the carbon exchange between atmosphere and ocean. A 1% reduction in magnetic dipole moment may release up to ten times more CO2 from the surface ocean than is emitted by subaerial volcanism.

22.01.2020 - 21:54 [ Carl Sagan, George Mullen / utexas.edu ]

Earth and Mars: Evolution of Atmospheres and Surface Temperatures

(7. Juli 1972)

Indeed, detailed global climatic models (17) suggest that a relative increase in A of only 2 percent is enough to induce extensive glaciation on Earth, which implies that the present climate is extremely sensitive to albedo. This leaves changes in atmospheric composition as a possible explanation. Major variations in the CO2 abundance will have only minor greenhouse effects because the strongest bands are nearly saturated. A change in the present CO2 abundance by a factor of 2 will produce directly a 2° variation in surface temperature (18). The CO2 abundance is highly controlled by silicate-carbonate equilibria; by buffering with seawater, which contains almost 100 times the atmospheric CO2; and by the respiration and photosynthesis feedback loop (19).

02.01.2020 - 15:16 [ Carl Sagan, George Mullen / utexas.edu ]

Earth and Mars: Evolution of Atmospheres and Surface Temperatures

(7. Juli 1972)

Indeed, detailed global climatic models (17) suggest that a relative increase in A of only 2 percent is enough to induce extensive glaciation on Earth, which implies that the present climate is extremely sensitive to albedo. This leaves changes in atmospheric composition as a possible explanation. Major variations in the CO2 abundance will have only minor greenhouse effects because the strongest bands are nearly saturated. A change in the present CO2 abundance by a factor of 2 will produce directly a 2° variation in surface temperature (18). The CO2 abundance is highly controlled by silicate-carbonate equilibria; by buffering with seawater, which contains almost 100 times the atmospheric CO2; and by the respiration and photosynthesis feedback loop (19).

02.01.2020 - 13:40 [ Geophysical Research Letters 35(16) / researchgate.net ]

Magnetic effect on CO 2 solubility in seawater: A possible link between geomagnetic field variations and climate

(August 2008)

Correlations between geomagnetic-field and climate parameters have been suggested repeatedly, but possible links are controversially discussed. Here we test if weak (Earth-strength) magnetic fields can affect climatically relevant properties of seawater. We found the solubility of air in seawater to be by 15% lower under reduced magneticfield (20 mT) compared to normal field conditions (50 mT). The magnetic-field effect on CO2 solubility is twice as large, from which we surmise that geomagnetic field variations modulate the carbon exchange between atmosphere and ocean. A 1% reduction in magnetic dipole moment may release up to ten times more CO2 from the surface ocean than is emitted by subaerial volcanism.

02.01.2020 - 13:40 [ Ludwig Maximilian Universität München ]

Wenn ein Treibhausgas baden geht: Wie das Erdmagnetfeld unser Klima beeinflusst

(6. Oktober 2008)

Die Ergebnisse zeigten, dass selbst kleine Veränderungen des Magnetfelds die Löslichkeit von Gasen im Wasser verändern. „Wenn das Magnetfeld schwächer war, löste sich 15 Prozent weniger Luft im Wasser als bei einem stärkeren Magnetfeld“, erläutert Winklhofer. „Für Kohlendioxid war der beobachtete Effekt sogar doppelt so stark.“

01.11.2019 - 06:52 [ Geophysical Research Letters 35(16) / researchgate.net ]

Magnetic effect on CO 2 solubility in seawater: A possible link between geomagnetic field variations and climate

(August 2008)

Correlations between geomagnetic-field and climate parameters have been suggested repeatedly, but possible links are controversially discussed. Here we test if weak (Earth-strength) magnetic fields can affect climatically relevant properties of seawater. We found the solubility of air in seawater to be by 15% lower under reduced magneticfield (20 mT) compared to normal field conditions (50 mT). The magnetic-field effect on CO2 solubility is twice as large, from which we surmise that geomagnetic field variations modulate the carbon exchange between atmosphere and ocean. A 1% reduction in magnetic dipole moment may release up to ten times more CO2 from the surface ocean than is emitted by subaerial volcanism.

25.09.2019 - 19:42 [ Geophysical Research Letters 35(16) / researchgate.net ]

Magnetic effect on CO 2 solubility in seawater: A possible link between geomagnetic field variations and climate

(August 2008)

Correlations between geomagnetic-field and climate parameters have been suggested repeatedly, but possible links are controversially discussed. Here we test if weak (Earth-strength) magnetic fields can affect climatically relevant properties of seawater. We found the solubility of air in seawater to be by 15% lower under reduced magneticfield (20 mT) compared to normal field conditions (50 mT). The magnetic-field effect on CO2 solubility is twice as large, from which we surmise that geomagnetic field variations modulate the carbon exchange between atmosphere and ocean. A 1% reduction in magnetic dipole moment may release up to ten times more CO2 from the surface ocean than is emitted by subaerial volcanism.

25.09.2019 - 19:37 [ Ludwig Maximilian Universität München ]

Wenn ein Treibhausgas baden geht: Wie das Erdmagnetfeld unser Klima beeinflusst

(6. Oktober 2008)

Die Ergebnisse zeigten, dass selbst kleine Veränderungen des Magnetfelds die Löslichkeit von Gasen im Wasser verändern. „Wenn das Magnetfeld schwächer war, löste sich 15 Prozent weniger Luft im Wasser als bei einem stärkeren Magnetfeld“, erläutert Winklhofer. „Für Kohlendioxid war der beobachtete Effekt sogar doppelt so stark.“

06.09.2019 - 01:47 [ SFGATE ]

Four more Northern Californians named as victims in Conception dive boat fire

Carrie McLaughlin and Kristian Takvam, coworkers who lived in Northern California, were on the Conception, which was anchored in Platt‘s Harbor off Santa Cruz Island when it became fully engulfed in flames as passengers slept below deck.

They both worked for San Francisco-based Brilliant, a website that creates interactive science, technology, engineering and mathematics courses. McLaughlin was a senior software engineer and Takvam was vice president of engineering.

06.09.2019 - 01:41 [ Office of Governor Gavin Newsom ]

Governor Newsom Responds to Developments in Conception Boat Fire Investigation

We are saddened to learn that Adrian Dahood-Fritz, who worked for the Ocean Protection Council under the California Natural Resources Agency since April as a senior environmental scientist, and her husband Andrew Fritz, were aboard the boat and are presumed dead. Adrian led the state’s efforts to manage California’s network of marine protected areas, and she cared deeply about the ocean and biodiversity. She embodied marine conservation and was a highly accomplished and respected scientific researcher.

05.06.2019 - 21:00 [ Ludwig Maximilian Universität München ]

Wenn ein Treibhausgas baden geht: Wie das Erdmagnetfeld unser Klima beeinflusst

(6. Oktober 2008)

Die Ergebnisse zeigten, dass selbst kleine Veränderungen des Magnetfelds die Löslichkeit von Gasen im Wasser verändern. „Wenn das Magnetfeld schwächer war, löste sich 15 Prozent weniger Luft im Wasser als bei einem stärkeren Magnetfeld“, erläutert Winklhofer. „Für Kohlendioxid war der beobachtete Effekt sogar doppelt so stark.“

05.06.2019 - 20:56 [ Geophysical Research Letters 35(16) / researchgate.net ]

Magnetic effect on CO 2 solubility in seawater: A possible link between geomagnetic field variations and climate

(August 2008)

Correlations between geomagnetic-field and climate parameters have been suggested repeatedly, but possible links are controversially discussed. Here we test if weak (Earth-strength) magnetic fields can affect climatically relevant properties of seawater. We found the solubility of air in seawater to be by 15% lower under reduced magneticfield (20 mT) compared to normal field conditions (50 mT). The magnetic-field effect on CO2 solubility is twice as large, from which we surmise that geomagnetic field variations modulate the carbon exchange between atmosphere and ocean. A 1% reduction in magnetic dipole moment may release up to ten times more CO2 from the surface ocean than is emitted by subaerial volcanism.

25.05.2019 - 08:11 [ Ludwig Maximilian Universität München ]

Wenn ein Treibhausgas baden geht: Wie das Erdmagnetfeld unser Klima beeinflusst

(6. Oktober 2008)

Die Ergebnisse zeigten, dass selbst kleine Veränderungen des Magnetfelds die Löslichkeit von Gasen im Wasser verändern. „Wenn das Magnetfeld schwächer war, löste sich 15 Prozent weniger Luft im Wasser als bei einem stärkeren Magnetfeld“, erläutert Winklhofer. „Für Kohlendioxid war der beobachtete Effekt sogar doppelt so stark.“

29.04.2019 - 13:25 [ Ludwig Maximilian Universität München ]

Wenn ein Treibhausgas baden geht: Wie das Erdmagnetfeld unser Klima beeinflusst

(6. Oktober 2008)

Die Ergebnisse zeigten, dass selbst kleine Veränderungen des Magnetfelds die Löslichkeit von Gasen im Wasser verändern. „Wenn das Magnetfeld schwächer war, löste sich 15 Prozent weniger Luft im Wasser als bei einem stärkeren Magnetfeld“, erläutert Winklhofer. „Für Kohlendioxid war der beobachtete Effekt sogar doppelt so stark.“

29.04.2019 - 13:24 [ Scinexx ]

Erdmagnetfeld beeinflusst Klima: Meerwasser nimmt bei schwächerem Magnetfeld weniger CO2 auf

(7. Oktober 2008)

Die Ergebnisse zeigten, dass selbst kleine Veränderungen des Magnetfelds die Löslichkeit von Gasen im Wasser verändern. „Wenn das Magnetfeld schwächer war, löste sich 15 Prozent weniger Luft im Wasser als bei einem stärkeren Magnetfeld“, erläutert Winklhofer. „Für Kohlendioxid war der beobachtete Effekt sogar doppelt so stark.“

02.06.2017 - 07:29 [ Max-Planck-Institut für Sonnensystemforschung ]

Der Einfluss der Sonne auf das Erdklima

(2005) Alle genannten Mechanismen, mittels derer die
Sonne einen Einfluss auf das Erdklima ausüben
könnte, hängen eng mit dem schwankenden Magnet-
feld der Sonne und der durch das Magnetfeld hervor-
gerufenen Sonnenaktivität zusammen. Besonders
auffällig ist dabei der etwa 11-jährige Zyklus, der sich
beispielsweise in der Anzahl der jeweils sichtbaren
dunklen Sonnenflecken zeigt.

21.05.2017 - 15:26 [ Max-Planck-Institut für Sonnensystemforschung ]

Der Einfluss der Sonne auf das Erdklima

(2005) Alle genannten Mechanismen, mittels derer die
Sonne einen Einfluss auf das Erdklima ausüben
könnte, hängen eng mit dem schwankenden Magnet-
feld der Sonne und der durch das Magnetfeld hervor-
gerufenen Sonnenaktivität zusammen. Besonders
auffällig ist dabei der etwa 11-jährige Zyklus, der sich
beispielsweise in der Anzahl der jeweils sichtbaren
dunklen Sonnenflecken zeigt.