Understanding-Climate-Changes , global warming

Raju678948 84 views 8 slides May 07, 2024
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About This Presentation

Title: "Understanding Climate Change: A Comprehensive Overview"

Description:
Welcome to our SlideShare presentation on climate change, where we explore the science, impacts, and solutions to one of the most pressing challenges of our time. Join us as we delve into the complex dynamics of ...


Slide Content

Understanding Climate Change The Science, Impacts, and Solutions Climate change refers to long-term shifts in global or regional climate patterns. It is driven by both human activities, like burning fossil fuels and deforestation, as well as natural factors, such as changes in solar radiation and volcanic eruptions. Pa by P Raj

Definition of Climate Change 1 Long-term Shifts Climate change encompasses gradual, long-term changes in weather patterns and average conditions over decades or longer. 2 Global and Regional Climate change can impact the entire planet, as well as specific regions, leading to changes in temperature, precipitation, and other environmental factors. 3 Human and Natural Causes Both human activities and natural processes can contribute to climate change, though human-caused changes have accelerated in recent decades.

Causes of Climate Change Human Activities Burning fossil fuels for energy, transportation, and industry releases greenhouse gases that trap heat in the atmosphere. Deforestation reduces the natural carbon sinks that absorb CO2, further exacerbating the greenhouse effect. Natural Factors Changes in the Earth's orbit, tilt, and location relative to the sun can slightly alter the amount of solar radiation the planet receives. Volcanic eruptions can release ash and gases that temporarily cool the climate by blocking some sunlight. Amplifying Effects As the climate changes, feedback loops can further accelerate warming, like melting permafrost releasing more greenhouse gases.

Rising Temperatures and Melting Ice Caps 1 Global Warming Average temperatures worldwide have risen by about 1.1°C (2°F) since the late 19th century, with the last decade being the hottest on record. 2 Arctic Ice Melt Arctic sea ice extent has decreased by about 13% per decade, and the Greenland ice sheet is losing mass at an accelerating rate. 3 Consequences Rising temperatures and melting ice disrupt ecosystems, raise sea levels, and increase the frequency and intensity of extreme weather events.

Extreme Weather Events Hurricanes Hurricanes and typhoons are becoming stronger and more destructive due to warmer ocean temperatures. Wildfires Hotter, drier conditions are leading to more frequent and intense wildfires in many regions. Flooding Heavy rainfall events and coastal flooding are becoming more common as sea levels rise. Droughts Prolonged droughts are straining water supplies and agricultural production in many parts of the world.

Sea Level Rise Thermal Expansion Warmer ocean temperatures cause water to expand, leading to rising sea levels. Ice Melt The melting of glaciers and ice sheets on land adds more water to the oceans, further raising sea levels. Coastal Impacts Higher sea levels increase the risk of coastal flooding, erosion, and damage to infrastructure.

Impacts on Ecosystems and Biodiversity Habitat Loss Climate change is destroying or degrading natural habitats, forcing many species to migrate or face extinction. Shifting Ranges Many plants and animals are moving to higher latitudes or elevations to escape warming, disrupting established ecosystems. Ocean Acidification Increased carbon dioxide absorption is making the oceans more acidic, harming coral reefs and other marine life. Invasive Species Changing climates allow some non-native species to thrive and outcompete indigenous plants and animals.

Solutions to Climate Change Renewable Energy Transitioning to clean, renewable sources like solar, wind, and hydropower to reduce greenhouse gas emissions. Reforestation Planting more trees and protecting existing forests, which act as natural carbon sinks. Energy Efficiency Improving energy efficiency in buildings, transportation, and industry to use less fossil fuel-derived energy. Carbon Capture Developing technologies to capture and store carbon dioxide emissions before they reach the atmosphere.