Daily Archives: 24. April 2023


24.04.2023 - 15:18 [ New York Times ]

Northern Lights Are Seen in Places Where They Normally Aren’t

“The sun spit off a big blob of plasma,” Mr. Steenburgh said. The burst of energy, which has its own magnetic field, had been moving through space and reached Earth’s magnetic field on Sunday, when the two collided to create a geomagnetic storm, he said. “It got our magnetosphere pretty revved up.”

When this happens, the aurora can be seen closer to the Equator, Mr. Steenburgh said. Such events are not that uncommon, with about 100 occurring every 11 years, he said, adding that the storm can also disturb high frequency radio used at sea and by airlines.

24.04.2023 - 15:14 [ AccuWeather.com ]

RECORD BREAKING: More than 400 tornadoes in the first three months of 2023

According to the National Weather Service, 466 tornadoes have struck since the beginning of the year. That’s the highest number since they started keeping track in 1950.

24.04.2023 - 13:21 [ Science.org ]

A global environmental crisis 42,000 years ago

(19 Feb 2021)

Do terrestrial geomagnetic field reversals have an effect on Earth‘s climate? Cooper et al. created a precisely dated radiocarbon record around the time of the Laschamps geomagnetic reversal about 41,000 years ago from the rings of New Zealand swamp kauri trees. This record reveals a substantial increase in the carbon-14 content of the atmosphere culminating during the period of weakening magnetic field strength preceding the polarity switch. The authors modeled the consequences of this event and concluded that the geomagnetic field minimum caused substantial changes in atmospheric ozone concentration that drove synchronous global climate and environmental shifts.

(…)

We precisely characterize the geomagnetic reversal and perform global chemistry-climate modeling and detailed radiocarbon dating of paleoenvironmental records to investigate impacts. We find that geomagnetic field minima ~42 ka, in combination with Grand Solar Minima, caused substantial changes in atmospheric ozone concentration and circulation, driving synchronous global climate shifts that caused major environmental changes, extinction events, and transformations in the archaeological record.

24.04.2023 - 13:16 [ ORF.at ]

Erdmagnetfeld: Polwanderung veränderte das Weltklima

Ungefilterte Strahlung aus dem Weltraum zerriss Luftpartikel in der Erdatmosphäre, trennte Elektronen ab und emittierte Licht. Diese ionisierte Luft brutzelte die Ozonschicht weg, heißt es in einer Presseaussendung zur Studie. In Folge dürften überall auf dem Globus Polarlichter aufgetaucht sein, nicht nur rund um den geographischen Nord- und Südpol wie heute. (…)

Das Erdmagnetfeld schwächelt bereits seit rund 2.000 Jahren wieder. Verglichen mit den ersten direkten Messungen vor 170 Jahren wurde eine Abschwächung um neun Prozent festgestellt, im Bereich des Südatlantiks sogar um dreißig Prozent.

24.04.2023 - 13:11 [ rp-online.de ]

Magnetfeld der Erde beeinflusst das Klima

(12.01.2009)

Allerdings könne die Studie nicht in einen direkten Zusammenhang mit der Erderwärmung gestellt werden, betonte der Wissenschaftler. Hier sei es vor allem das Kohlendioxid (CO2), das die entscheidende Rolle spiele.

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.

24.04.2023 - 12:20 [ University of Maryland ]

Space Mission First to Observe Key Interaction Between Magnetic Fields of Earth and Sun

(12 May 2016)

Most people do not give much thought to the Earth’s magnetic field, yet it is every bit as essential to life as air, water and sunlight. The magnetic field provides an invisible, but crucial, barrier that protects Earth from the sun’s magnetic field, which drives a stream of charged particles known as the solar wind outward from the sun’s outer layers. The interaction between these two magnetic fields can cause explosive storms in the space near Earth, which can knock out satellites and cause problems here on Earth’s surface, despite the protection offered by Earth’s magnetic field.

A new study co-authored by University of Maryland physicists provides the first major results of NASA’s Magnetospheric Multiscale (MMS) mission, including an unprecedented look at the interaction between the magnetic fields of Earth and the sun. The paper describes the first direct and detailed observation of a phenomenon known as magnetic reconnection, which occurs when two opposing magnetic field lines break and reconnect with each other, releasing massive amounts of energy.

The discovery is a major milestone in understanding magnetism and space weather.

24.04.2023 - 12:17 [ National Aeronautics and Space Administration ]

Magnetic Portals Connect Earth to the Sun

Oct. 30, 2008: During the time it takes you to read this article, something will happen high overhead that until recently many scientists didn‘t believe in. A magnetic portal will open, linking Earth to the sun 93 million miles away. Tons of high-energy particles may flow through the opening before it closes again, around the time you reach the end of the page.

„It‘s called a flux transfer event or ‚FTE,'“ says space physicist David Sibeck of the Goddard Space Flight Center. „Ten years ago I was pretty sure they didn‘t exist, but now the evidence is incontrovertible.“

Indeed, today Sibeck is telling an international assembly of space physicists at the 2008 Plasma Workshop in Huntsville, Alabama, that FTEs are not just common, but possibly twice as common as anyone had ever imagined.

24.04.2023 - 11:25 [ Times of India ]

Study: Sun’s magnetic field is weakening

(Oct 7, 2019)

The research, according to the team, will help monitor and evaluate the influence of solar activities and their implications on the Earth’s climate. The astrophysicists’ team included experts from Ahmedabad’s Physical Research Laboratory (PRL), Japan, and China.

24.04.2023 - 10:52 [ International Association of Geomagnetism and Aeronomy (IAGA) / Cairo University ]

The Shrinking of the Heliosphere Due to Reduced Solar Wind

(2010)

Abstract. The heliosphere is the space within which the solar wind dominates and the solar interplanetary magnetic field prevails. Its boundary is determined by the balance between stellar and solar winds. Owing to the present reduction in the solar wind pressure, one would expect that the stellar wind would push the heliosphere inward leading to its shrinkage. In this paper we calculate the extent of the heliosphere at different solar wind status.

Backward estimation of the extent of the heliosphere since 1890 is done. It is found that the heliosphere oscillated between 75 and 125 AU between 1890 –
2010. Most important is the forecast of the shrinkage and oscillations of the heliosphere and their implications on the earth. The shrinkage of the heliosphere would allow more invasions of cosmic rays to the earth and planets, increased cloud cover and a cooler Earth.

1 Introduction

The heliosphere is the cavity curved by the solar wind into the interstellar medium. Its extension is determined by the equality of the solar wind pressure and the stellar wind pressure. For this reason, we will first study past, present and future status of solar activity and then we will reflect this study into the heliosphere.

24.04.2023 - 10:51 [ Telegraph.co.uk ]

Sun‘s protective ‚bubble‘ is shrinking

(18.10.2008)

New data has revealed that the heliosphere, the protective shield of energy that surrounds our solar system, has weakened by 25 per cent over the past decade and is now at it lowest level since the space race began 50 years ago. (…)

„Around 90 per cent of the galactic cosmic radiation is deflected by our heliosphere, so the boundary protects us from this harsh galactic environment.“

The heliosphere is created by the solar wind, a combination of electrically charged particles and magnetic fields that emanate a more than a million miles an hour from the sun, meet the intergalactic gas that fills the gaps in space between solar systems.

24.04.2023 - 09:03 [ Stefano Di Battista, journalist, meteorology, Antarctic climatology, space weather / Nitter ]

South Pole Station November 2022 -40.4 °C, coldest since 1987 December 2022 -29.1 °C, coldest since 2006 January 2023 probably -31.3 °C, coldest since 1995 Summer 2022-23 ~ -30.2 °C, coldest since 1999-2000 Singularity or new climatic phase?

(Jan 29, 2023)

24.04.2023 - 08:59 [ Electroverse.info ]

No, Antarctic Ice Isn’t Melting Into Oblivion; + Shiveluch Erupts (Again)

If the world’s propagandizing ‘news’ outlets insist on reporting that Antarctica sea ice is melting in oblivion–which NASA reveals it most certainly isn’t–then they need to come up with a new mechanism to support it, because temperatures, clearly, are playing no part.

24.04.2023 - 08:33 [ Forbes.com ]

Is Earth’s Magnetic Shield Eroding?

(29.3.2018)

The strength of Earth’s main magnetic field is currently about 29.5 microteslas, down 5 microteslas, or 14 percent from its strength three centuries ago.

We know this. There is no question of this.

24.04.2023 - 08:26 [ ScienceAlert.com ]

Earth‘s Magnetic North Pole Has Shifted So Much We‘ve Had to Update GPS

(Feb 6, 2019)

Scientists on Monday released an emergency update to the World Magnetic Model, which cellphone GPS systems and military navigators use to orient themselves.

It‘s a minor change for most of us – noticeable only to people who are attempting to navigate very precisely very close to the Arctic.

24.04.2023 - 08:12 [ Newsweek ]

Earth‘s Magnetic North Pole Follows ‚Unusual‘ Path, Races Towards Siberia

(23.03.2023)

Experts told Newsweek that the pole could reach the vast Russian region as soon as the middle of the century.

Having said that, the movement of the magnetic north pole is unpredictable and scientists cannot reliably forecast how it will behave beyond a few years into the future. As a result, there is significant uncertainty as to how long it will take to reach Siberia and whether or not it will even get there at all.

24.04.2023 - 07:39 [ San Francisco Chronicle ]

A severe geomagnetic storm could create rare ‚northern lights‘ sightings. Here’s what it means for Northern California

(23.04.2023)

Geomagnetic storms occur when energy from the sun’s outermost atmosphere disrupts Earth’s magnetic field, causing bands of green and red to light up the night sky. The natural electrical phenomenon is especially visible near the North Pole, but sometimes stretches lower into Canada and the northern United States, where it is often captured by wildfire cameras.

24.04.2023 - 07:36 [ DailyRecord.co.uk ]

Scots could see Northern Lights with aurora borealis ‚likely‘ tonight

(23.04.2023)

The natural light display – more typically visible in high-latitude regions around the Artic and Antarctic – is better seen in a dark location with no light pollution, with cloudless skies.

The atmospheric phenomenon is caused when solar particles from the sun collide with Earth‘s atmosphere. These energised particles combine with nitrogen and oxygen molecules, which send them into an excited state.

24.04.2023 - 06:26 [ Haaretz ]

Get Ready for Israel’s North Korean-style Independence Day

The coalition that’s threatening to destroy democracy is also disgracing the national ceremony ■ Netanyahu brings back his trademark speeches: victimhood plus threats against Iran ■ Is a Bibi plea deal in the offing?

24.04.2023 - 05:57 [ ZDF ]

Berliner SPD stimmt für Koalition mit CDU

Die Berliner SPD-Mitglieder haben den Weg frei gemacht für eine schwarz-rote Koalition unter Führung der CDU. Bei einer Mitgliederabstimmung votierten 54,3 Prozent für den zuvor ausgehandelten Koalitionsvertrag mit den Christdemokraten, wie der SPD-Landesverband am Sonntag nach der Auszählung mitteilte. Für die Koalition stimmten 6.179 Berliner SPD-Mitglieder, dagegen 5.200.

Gibt es beim CDU-Parteitag an diesem Montag ebenfalls eine Mehrheit, ist der Weg frei für eine schwarz-rote Landesregierung.