Presentation is loading. Please wait.

Presentation is loading. Please wait.

Mælkevejen og Jordens klima Henrik Svensmark, Dansk Rumforskningsinstitut Email hsv@dsri.dk Københavns Universitet, 2002.

Published byAbigail Sawyer Modified over 11 years ago

Similar presentations

Presentation on theme: "Mælkevejen og Jordens klima Henrik Svensmark, Dansk Rumforskningsinstitut Email hsv@dsri.dk Københavns Universitet, 2002."— Presentation transcript:

1 Mælkevejen og Jordens klima Henrik Svensmark, Dansk Rumforskningsinstitut Email hsv@dsri.dk
Københavns Universitet, 2002

2 Satellite Failures due to Space Weather Effects
Anomalies due to spacecraft surface and internal charging (Marecs, ECS, Meteosat, TELE-X,…..) Latch-up induced failures (ESR-1, PRARE, Equator-S,…..) SEU’s in linear circuits…(Anik 1 &2) Solar Array problems/degradation (Tempo, PanAm, ECS,….) More recent satellite failures: Telestar 401 TV links etc.. Galaxy IV silenced 80% of pagers in North America More than 12 satellites lost due to Space Weather Effects Last 4 years space losses may have exceeded $500 million Commercial interests often do not allow anomaly reporting.

3 Damage to transformers
Damage to a transformer at a power plant Delaware, New Jersey Price: 10 mill USD Repair can take up to 1 year. In this particular case they were lucky to find a used one from a shut down plant. Took only 6 weeks to restore Sweden: simultaneous power loss in six 130 kV power distribution lines Chicago: Five transformers in the Chicago area failed due to elevated geomagnetic activity

4 New Particle formation: Observations and Theory
Observed nucleation rates are much larger than predicted by classical binary (H2SO4+H2O) nucleation theory The functional dependence of the observed nucleation rate of [H2SO4] is much weaker (~ [H2SO4]2 )than predicted by classical binary (H2SO4+H2O) nucleation theory (~ [H2SO4]10 ) Measured growth rates of freshly formed nanoparticles are about a factor of 10 higher than can be explained by H2SO4 and its associated H2O and NH3

5 Micro-physics: Why in the lower part of the atmosphere?
DG t: Time to grow from rc to r* rc ri r* r T (sek) Ion-pair/cc/sek 400 300 200 100 t ~ 200 sek for [H2SO4] = pr cc

6 enhanced aerosol formation caused by ionisation
Experimental evidence of enhanced aerosol formation caused by ionisation Natural level of ionisation Artificial air N2:O2 = 4:1 SO2 = 300 ppb C2H4 = 100 ppb O = 160 ppb Vohra et al., Atmos. Environment, 18, 1653 (1984)

7 Cosmic ray variations ionisation and aerosol formation
Based on Numerical studies by Yu, 2001

8 CLOUD experimenet ved CERN

9 Kulstof-14 fra træ-ringe
Solaktivitet og Klima Kulstof-14 fra træ-ringe

10 IR Cloud properties and Cosmic rays
Cosmic Ray - Low Cloud Top Temperature Correlation only found in low clouds Marsh and Svensmark, PRL 2000

11 Little Ice age (~ 1300-1800) Documented in Europe Greenland
Sargasso Sea Peru East Africa Japan Caribbean Sea West Africa Taiwan and China South Africa USA Argentina

12 Ice-ages and spiral arms
Cosmic ray flux is larger in spiral arms One revolution take about 240 Mill years Spiral arm crossings every 140 Mill years

13 Ice-ages and spiral arms
Nir Shaviv, PRL 2002

Download ppt "Mælkevejen og Jordens klima Henrik Svensmark, Dansk Rumforskningsinstitut Email hsv@dsri.dk Københavns Universitet, 2002."

Similar presentations

$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200.

$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200.
$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500.

$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500.
What? Remote, actively researched, monitored, measured, has a huge impact on global climate and is relatively cool?

What? Remote, actively researched, monitored, measured, has a huge impact on global climate and is relatively cool?
$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300.

$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300.
160,000 Years Carbon dioxide and global temperature are highly correlated. Temperatures of the past 160,000 years have varied greatly between ice ages.

160,000 Years Carbon dioxide and global temperature are highly correlated. Temperatures of the past 160,000 years have varied greatly between ice ages.
Volcanoes Large volcanic eruptions with high SO2 content can release SO2 into the stratosphere. This SO2 eventually combined with water vapor to make.

Volcanoes Large volcanic eruptions with high SO2 content can release SO2 into the stratosphere. This SO2 eventually combined with water vapor to make.
$100 $400 $300$200$400 $200$100$100$400 $200$200$500 $500$300 $200$500 $100$300$100$300 $500$300$400$400$500.

$100 $400 $300$200$400 $200$100$100$400 $200$200$500 $500$300 $200$500 $100$300$100$300 $500$300$400$400$500.
$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200.

$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 $1 Million $500,000 $250,000 $125,000 $64,000 $32,000 $16,000 $8,000 $4,000 $2,000 $1,000 $500 $300 $200 $100 Welcome.

$1 Million $500,000 $250,000 $125,000 $64,000 $32,000 $16,000 $8,000 $4,000 $2,000 $1,000 $500 $300 $200 $100 Welcome.
200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 Category 1 Category 2 Category 3 Category 4 Category.

Category 1 Category 2 Category 3 Category 4 Category.
200 300 400 500 Category 2 100 200 300 400 500 Category 3 100 200 300 400 500 Category 4 100 200 300 400 500 Category 5 100 200 300 400 500 100 Category.

Category Category Category Category Category.
Mr. Smith 100 200 400 300 400 Cat. 1Cat. 2Cat. 3Cat. 4 300 200 400 200 100 500 100.

Mr. Smith Cat. 1Cat. 2Cat. 3Cat
$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300.

$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300.
The day to day conditions. It is raining outside… The weather conditions over time. Cold Winters. Weather or climate video.

The day to day conditions. It is raining outside… The weather conditions over time. Cold Winters. Weather or climate video.
Who Wants To Be A Millionaire?

Who Wants To Be A Millionaire?
Welcome to Who Wants to be a Millionaire

Welcome to Who Wants to be a Millionaire
Image Interpretation for Weather Analysis Part I 29 October 2009 Dr. Steve Decker.

Image Interpretation for Weather Analysis Part I 29 October 2009 Dr. Steve Decker.
1 Managing Flow Variability: Safety Inventory The Newsvendor ProblemArdavan Asef-Vaziri, Oct 2011 The Magnitude of Shortages (Out of Stock)

1 Managing Flow Variability: Safety Inventory The Newsvendor ProblemArdavan Asef-Vaziri, Oct 2011 The Magnitude of Shortages (Out of Stock)
Water Vapor and Lapse Rate Feedbacks Neil Gordon ESP Seminar April 14, 2006.

Water Vapor and Lapse Rate Feedbacks Neil Gordon ESP Seminar April 14, 2006.
Space Weather dependence of the air drag as observed by CHAMP Hermann Lühr 1) and Huixin Liu 2) 1) GeoForschungsZentrum Potsdam, Germany 2) Dept. Earth.

Space Weather dependence of the air drag as observed by CHAMP Hermann Lühr 1) and Huixin Liu 2) 1) GeoForschungsZentrum Potsdam, Germany 2) Dept. Earth.

Similar presentations

Ads by Google