Lecture 18&19 (CLIMATE CHANGE) Flashcards
How much more warmer is the world since the 19th century
1.1C warmer
How much has amount of CO2 increased since 19th century
50%
Evidence for rapid climate change
• Global Temperature Is Rising
• The Ocean Is Getting Warmer
• The Ice Sheets Are Shrinking
• Glaciers Are Retreating
• Snow Cover Is Decreasing
• Sea Level Is Rising
• Arctic Sea Ice Is Declining
• Extreme Events Are Increasing in Frequency
• Ocean Acidification Is Increasing
the number of days when the minimum temperature is less than zero degrees is projected to decrease by what percent
50%
Snowfall is also projected to decrease substantially by the middle of the century, with reductions of over
30%
What energy sources are projected to decrease in Ireland
•Solar
•Wind
Increase in sea surface temperature of how many degrees per decade since 1994
0.6°C
Sea level around Ireland risen by approximately how many cm since the early 90s
4–6 cm
What will our new world climate look like
• Increased drought and wildfires
• Increased flooding and extreme weather
• Icecap melting and rising sea levels
• Collapsing agriculture and fisheries
• Pandemics and increased spread of disease
• Ecosystem disruption and species extinction
Over the past 100 years sea levels have risen by almost how many cm.
25cm
By 2050 sea levels will reach how many cm.
35cm
London in 2050 will have most similar climate to where today (79.1%)
Barcelona
Barcelona in 2050 will have most similar climate to where (66%) today
Capetown, SA
• Dublin in 2050 will have most similar climate to where (62.4%) today,
Paris
Paris in 2050 will have most similar climate to where (88%) today
Port Elizabeth, SA
Edinburgh in 2050 will have most similar climate to where (47.6%)
Lille
Lille in 2050 will have most similar climate to where (86%) today
Melbourne
What is climate change
The long-term shifts in temperatures and weather patterns. These shifts may be natural, but since the 1800s, human activities have been the main driver of climate change, primarily due to the burning of fossil fuels (like coal, oil and gas), which produces heat-trapping greenhouse gases.
What is the main driver of climate change
Greenhouse effect
What do GHG in the atmosphere act like
bit like the glass in a greenhouse or a blanket, trapping the sun’s heat and stopping it from leaking back into space and causing global warming.
Burning coal, oil and gas produces what
carbon dioxide(CO2) and nitrous oxide (N2O).
Recent changes in the climate are described as
Widespread
Rapid
Intesifyinh
Unprecedented
How much has emissions from agricultural sector increase in 2020
3.0%
•Increased use of synthetic nitrogen fertiliser(5.2%)
•Higher dairy cow numbers (2.8%)
•increase in milk production (5.5%)
How much have CO2 emissions increased since 2020
17.3%
Liming on soils has increased by how much in 2021
49.5%
How much of an increase in methane emissions in 2021
17.7%
How much of an increase in emissions from manure management
29.6%
In the last 10 years how much have dairy cow numbers increased by
44.5% with a 62.8% increase in milk production
Climate Action Plan aims to reduce greenhouse gas emissions by how much by the year 2030
51%
More than what percentage of farming’s GHG emissions are directly linked to the 7.3 million animals now being reared, and the manure they creat
80 per cent
What fraction of emissions is blamed on fertilisers
An eighth
Agriculture (animal manures) responsible for what percent of national NH3 emissions,
99 per cent
In 2020, the number of dairy cows on Irish farms rose for the ___ consecutive year, climbing by 3.2%.
10th consecutive year
Climate Action Plan requires agriculture to reduce GHG emissions by what %
25%
while fraction must replace calcium ammonium nitrate fertiliser with less-damaging protected urea.
two-thirds
Better breeding will produce cattle that can reach desired weights quicker, which will mean that they can be slaughtered ____ months earlier, at 24 months, rather than 27 months today.
three months earlier
