This document discusses both long-term and short-term causes of climate change. Long-term causes occurring over millions of years include continental drift, changes in Earth's orbit and tilt, which affect ocean currents and temperatures. Short-term causes operating over decades to thousands of years include volcanic eruptions, which eject particles that block sunlight, and shifts in ocean and air currents driven by wind and temperature changes. Together, these natural factors have triggered shifts between ice ages and warmer periods throughout Earth's history.
El Niño is a naturally occurring event in the equatorial region which causes temporary changes in the world climate.
Originally, El Niño was the name used for warmer than normal sea surface temperatures in the Pacific Ocean off the coast of South America.
Now, El Niño has come to refer to a whole complex of Pacific Ocean sea-surface temperature changes and global weather events.
The ocean warming off South America is just one of these events.
El Niño is a naturally occurring event in the equatorial region which causes temporary changes in the world climate.
Originally, El Niño was the name used for warmer than normal sea surface temperatures in the Pacific Ocean off the coast of South America.
Now, El Niño has come to refer to a whole complex of Pacific Ocean sea-surface temperature changes and global weather events.
The ocean warming off South America is just one of these events.
Oceans are a vast body of salt water that covers almost three to fourths of the earth's surface.
Seas are smaller, found on the margins of the ocean and are partially enclosed by land.
Seawater:
High density, high heat capacity, colder, salty and slightly compressible (its volume decreases under pressure), thus its density increases with pressure.
Why is Ocean Circulation Important?
•Similar to winds in the atmosphere, they transfer significant amounts of heat from equatorial areas to the poles and thus play important roles in determining the climates of coastal regions.
•The ocean circulation pattern exchanges water of varying characteristics, such as temperature and salinity
•ocean currents and atmospheric circulation influence one another.
•in addition, they transport nutrients and organisms
This Presentation covers the following topics:-
-Radiation
-Albedo
-Factors affecting albedo
-Albedo-ice feedback
-Impacts of Albedo On Environment
-Heat island effect
-Innovative ways to reduce albedo
-Insolation effects
-Black body
-Kirchhoff's perfect black bodies
Credits - Aditi Shah
Oceans are a vast body of salt water that covers almost three to fourths of the earth's surface.
Seas are smaller, found on the margins of the ocean and are partially enclosed by land.
Seawater:
High density, high heat capacity, colder, salty and slightly compressible (its volume decreases under pressure), thus its density increases with pressure.
Why is Ocean Circulation Important?
•Similar to winds in the atmosphere, they transfer significant amounts of heat from equatorial areas to the poles and thus play important roles in determining the climates of coastal regions.
•The ocean circulation pattern exchanges water of varying characteristics, such as temperature and salinity
•ocean currents and atmospheric circulation influence one another.
•in addition, they transport nutrients and organisms
This Presentation covers the following topics:-
-Radiation
-Albedo
-Factors affecting albedo
-Albedo-ice feedback
-Impacts of Albedo On Environment
-Heat island effect
-Innovative ways to reduce albedo
-Insolation effects
-Black body
-Kirchhoff's perfect black bodies
Credits - Aditi Shah
The Earth’s climate is dynamic and characterised by trends, aberrations and quasi-periodic oscillations varying over a broad range of time-scales [1], which are governed by external (extraterrestrial systems) and/or internal(ocean, atmosphere and land system). Trends are largely controlled by plate tectonics, and thus to change gradually on million year time scale. Aberrations occur when the certain thresholds are passed and are manifested in the geological record as the unusual rapid (less than a few thousands of years) or extreme change in climate. The quasi-periodic oscillations are mostly astronomically paced; they are driven by astronomical perturbations that affect the earth’s orbit around the sun and the orientation of earth’s rotation axis with respect to its orbital plane. These perturbations are described by the three main astronomical cycles: eccentricity, precession and obliquity, which together determine the spatial and seasonal pattern of insolation received by the earth [2], eventually resulting in climatic oscillations of ten to hundreds of thousands of year [3].Sun being the main source of energy for the earth system controls the climate of it. Variation in solar activity and cosmic ray intensity has direct influence over climatic features such as cloudiness, temperature and rainfall [4]. Volcanic eruptions also force all elements of the climatic systems up to a varying degree but producing long term climatic signals in the ocean. The cumulative volcanic cooling effect at present offsets about one third of anthropogenic warming [5].Other than these causes paleoclimatologists also relates the past climate changes with movement of solar system[6], interplanetary dusts and influence of asteroids[7].However the recent variability in climate what earth is experiencing is unlikely due to any of the individual above factors rather it is due to the compound effect of complex interactions of all the natural as well as anthropogenic forcings.
References:
1. J. C. Zachos, M. Pagani, L. Sloan, E. Thomas, K. Billups, Science 292 (2001) 686-693.
2. G. Kukla, Nature (London) 253, 600 (1975).
3. J. D. Hays, J. Imbrie, N. J. Shackleton, Science 194 (1876) 1121-1132.
4. N. Marsh, H. Swensmark, Space Sci. Rev. 94 (2000) 215-230.
5. T. L. Delworth, V. Ramaswamy, G. L. Stenchikov, Geophys. Res. Lett. 32 (2005) L24709.
6. K. Fuhrer, E. W. Wolf, S. J. Johnsen, J. Geophys. Res. 104(D24) (1999) 31043-31052
7. P. Hut, W. Alvarez, W. P. Elder, T. Hansen, E. G. Kauffman, G. Keller, E. M. Shoemaker & P. R. Weissman, Nature Vol. 329, 10 September, 1987
Climate is a long term condition happened in a specific place. While, weather is a short-term condition happened in a specific area and specific time. The factors affecting climate are latitude, altitude, topography, distance of bodies of water
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
When stars align: studies in data quality, knowledge graphs, and machine lear...
Long term & short term effects of climate
1. Long Term & Short Term Effects of Climate Change By: Sarah Ramanathan Keiran Alam Chantal Liu Manal Rahim
2. For the past millions of years, our climate has had many significant changes. Changes in Earth's climate are triggered by changes in Earth's energy balance. Long term changes: - continental drift - changes in Earth's orbit Short term changes: - Volcanic eruptions - Air and Ocean Currents
3. Long Term Changes in climate(millions of years- hundreds of thousands of years) Chantal & Manal
4. Plate Tectonics = Theory of explaining slow movement of large plates of Earth's crust Continental Drift - Theory that Earth's continents used to be one supercontinent named Pangaea. 225 Million years ago: Pangaea (Permian period) Changes Due to Continental Drift
5. 200 Million years ago: Laragia and Gondwanaland (Triassic period) 135 Million years ago: Jurassic period 65 Million years ago: Creations period.
6.
7.
8. Continents move = ocean currents and wind patterns change - Affects heat transfer Affects distribution of land mass - Nothern Hemisphere (includes Canada) has most land mass.
9. - Fewer large bodies of water = coldest winters & warmest summers - More large bodies of water in Southern hemisphere = more moderate climate - Temperatures weren't like this in Permian period
10. More mountains (caused by movement of Earth's plates) affects Local & regional climates Wearing of mountains over time can also cause regional climate change - These changes have occurred in Canada because we have new and old mountain regions such as the Rockies and Appalachians.
11. Scientists have found that over time the energy the Sun produces over time can also change Changes of area cause complications in production of CO2 - CO2 porduced in volcanoes & mid-ocean trenches. -> Lost by slowly being absorbed into oceans -> Areas w/ high overall temperature most likely had greenhouse warming due to volcanic CO2
12. Long-Term Cycles in Climate 20 000 years ago, Earth had last ice age. - Temp was 10 degrees lower than today - Canada covered in ice sheet 3 km thick - Sea levels dropped as oceans froze over -> Land under oceans were exposed, revealing hidden bridges to continents
13. -> Animals crossed over to new habitats Major changes in temp happen in regular cycles (page 349 of textbook) -warm interglacial periods occur every 100 000 years Interglacial Period - Time between ice ages when Earth warms up
14. Changes That Occur Over Hundreds Of Thousands Of Years: The Recurrence of Interglacial Periods and Ice Ages every 100,000 years, interglacial periods and ice ages occur Ice age (glacial period): long term reduction of Earth’s temperature = glaciers and ice sheets covering Earth
15. Interglacial periods: period of warmer temperature that separates periods of time in an ice age Interglacial periods involve movements of glaciers Causes temperatures to keep rising and falling depending on whether glaciers are advancing or retreating
16.
17. Why these Interglacial Periods &Ice Ages Keep Happening? Engineer/astronomer Milutin Milankovitch developed theory on reason for these climate changes Earth’s orbit around sun changes on three main ways/cycles: Eccentricity (changing shape) of Earth’s orbit Earth’s Tilt Direction (wobble) of tilt
18. Eccentricity of the Earth’s orbit Shape of Earth’s orbit around sun changes Goes from almost circular to more elliptical (flattened circle/oval-like)
19. Caused by Jupiter and Saturn’s gravities Occurs approximately every 100,000 years Earth’s current cycle is more elliptical (oval-like)
20. Earth’s Tilt Earth’s current tilt = 23.5 degrees Earth’s tilt is responsible for its changes in seasons
21. Scientists believe that changes in Earth’s tilt are cause for glacial cycles occurring When Earth’s tilt is larger (closer to its 24.5 degrees max): Glaciations end Causes warmer summers Earth’s tilt currently decreasing
22. In a cycle close to 42,000 years, Earth tilts back and forth on its axis from 22.1 degrees to 24.5 degrees
23. Direction (wobble) of tilt (Axial Precession) In order to grasp the idea, think of a spinning top
24. As it spins, it wobbles around/changes direction while spinning on same point Earth’s tilt is similar As Earth’s spins on its axis, it slowly wobbles The angle of its tilt remains approximately the same but its directions changes Cycle of roughly 26,000 years
25.
26. Short Term Changes in climate (decades-thousands of years) Sarah & Keiran
27. Volcanic Eruptions Volcanic eruptions can cause Earth’s climate to change temporarily rocks, dust, and gases are sent out high into atmosphere.
28.
29.
30. Suns energy reflects back out to space (from sulfur dioxide particles) Earth’s surface shaded. Amount of cooling depends on amount of dust put in air, and time of cooling-on size of particles.
31. Ocean Currents Uneven heating of Earth causes convection currents that create prevailing winds and ocean currents. Ocean currents have a strong effect on climates of nearby land Ocean currents can be caused by winds Cold ocean currents cool air above Warm ocean currents heat air above
32. The global conveyor belt begins around the North Pole and then works its way down, traveling through all of the oceans before circling back Ocean currents can have a major effect on the weather
36. Changes in Sun’s Radiation suns radiation amount drops, Earth gets less energy (less heat =Earth cools down) suns radiation higher=more energy No scientific reason yet why radiation and over shorter time scales.
38. Bibliography Nelson Science Perspectives 10 Nelson Education Ltd. 2010 Pages 348-353 <http://ircamera.as.arizona.edu/NatSci102/NatSci102/lectures/climate.htm>. Windows to the Universe 2010 National Earth Science Teachers Association 200-2011 http://www.windows2universe.org/earth/climate/cli_seasons.html Woods Hole Oceanographic Institution Shelley Dawicki March 28, 2005 http://www.whoi.edu/page.do?pid=9779&tid=282&cid=3638&ct=162 Long term climate hypertext G. H. Rieke http://ircamera.as.arizona.edu/NatSci102/NatSci102/lectures/climate.htm
39. Pictures: Long term climate hypertext G. H. Rieke http://ircamera.as.arizona.edu/NatSci102/NatSi102/lectures/climate.htm http://www.phy6.org/stargcc/Sconcat2.htm http://room106vjh2.blogspot.com/2010_09_01_archive.html Black, Ken. "How does Ocean Temperature affect Air Temperature?" WiseGeek. Web. 10 Jan 2011. Capital Regional District. "Global Ocean Currents.". Web. 10 Jan 2011. Hayhoe, Christy, Douglas and Katharine. Energy Transfer within the Climate System: Air and Ocean Circulation. Perspectives 10. Canada: Nelson Eduacation Ltd, 2010. 344-348. Print. Exploring the environment Wheeling Jesuit University/NASA-supported Classroom of the Future September 30, 2010 http://www.cotf.edu/ete/modules/volcanoes/vclimate.html