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Monitoring and Modeling Climate Change

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Ng Chee Hong

on 4 June 2015

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Transcript of Monitoring and Modeling Climate Change

Monitoring
and
Modeling
Climate Change

Table of contents
- Introduction
- What is monitoring climate change?
- Climate data from Weather Satellites
- The Earth Observing System (EOS)
- Modeling climates and climates changes
- Limitations and Sources of Uncertainty in Climate Models
Introduction
Monitoring climate change
Using Radar to gather weather data and climate changes
By: Chee Hong, Dillon and Kieren
Radar data is used to forecast weather and to estimate global average climate factors
- Humidity
- Precipitation
The radar sends out microwave pulses that will hit objects such as rain droplets and pulses will reflect back to the radar
The Earth Observing System
(EOS)
Launched in 1997 by Canada, United States and Japan
They combined information to create a long term observation of how atmosphere, oceans, land, and ecosystem changes on Earth.
- Terra - Heat emission and reflection from Earth, cloud cover, and pollution in troposphere.
- Aura - Atmospheric chemistry but focus more on greenhouse gasses
- Aqua - Precipitation, evaporation and water cycle
- QuikSCAT - Speeds and direction of winds near the ocean
Climate Data from weather satellites
- Collecting climate data is mostly done by satellites
- Since 1978, over 100 satellites have been launched

2 Types of Orbiting Satellites
Geostationary satellites
- Orbit same speed as the earth rotates (Used for weather forecasting and global communications)
Polar Orbiting satellites
- move from north and south over the poles. Takes 2 hours to orbit. (Used for earth-mapping and earth observation)
Modeling climates and climate changes
- Recording data is only the first phrase
- Next step is analyzing the data and interpreting data. (auditing the data received)
-
Earth
is big, hard to model the planet
- Scientist use
past
data to input in to computers
- Then
predict
the climate change

Example of modeling:
Mapping
,
miniature
,
mathematical formula
, and
computer programs
Computer programs that analyze climate data and predict how climate may change in the future.
Climate Models
Examples of data:
- Global temperature
- Carbon dioxide concentration in the atmosphere
Climate models are used to link data about the atmosphere and oceans together into GCM (General Circulation Models), which are also known as global climate models.
These models represent how water and air interact and move around on planet.
Limitations and Source of Uncertainty in Climate Models
Predictions of climate models are not 100% accurate because of imprecision in data and difficulties in the calculations.
Sophistication of the model
Quality and Quantity of the data
Complexity of the variables
Climate models indicate probabilities, not certainty

Limitations such as:
Climate Forcing Agents
Forcing Agents are anything that alters the Earth’s climate
Greenhouse gasses are the ones that had the greatest impact on the current global warming than any other agent
References
Dickinson, Tom. On Science 10. Toronto, ON: McGraw-Hill Ryerson, 2009. Print.
Monitoring: Making consistent, long-term series of observation and measurements
Full transcript