Lab Assignment

Global Surface Temperature

Lab 2 EAS 104 Fall 2019

Lab Instructor: Linyuan Cui

Global Average Temperature

● What kind of data are shown in the data sheet? ○ Unit ○ Time Range ○ Categories (“DJF”, “JJA”, “MAM”, “SON”) ○ Column N - “Year”

Global Average Temperature

● What kind of data are shown in the data sheet? ○ Unit = °C ○ Time Range = 1880 ~ 2006

■ What is missing in 2006? ○ Categories (“DJF”, “JJA”, “MAM”, “SON”)

■ DJF = Dec, Jan, Feb ○ Column N - “Year”

■ Annual Mean or Yearly Average Temperature ■ What are the 5 warmest years on record?

Year Annual

Mean (°C) Magnitude

Abs Magnitude

Trend

1930 1940 1950

1. What is the typical magnitude (i.e., ignoring the sign) of year-to-year global temperature changes?

2. How many times did the temperature increase/decrease in the following year?

Fluctuations of the global climate

Fluctuations of the global climate

Year Annual

Mean (°C) Magnitude

Abs Magnitude

Trend

1930 13.93

1940 14.05 0.12 0.12 Temperature

Increase

1950 13.85 -0.2 0.2 Temperature

Decrease

1. What is the typical magnitude (i.e., ignoring the sign) of year-to-year global temperature changes? 0.16°C

2. How many times did the temperature increase/decrease in the following year? 1 Temperature Increase; 1 Temperature Decrease.

Global Temperature Variability and Trends In Class Assignment:

1. Make a scatter plot of DJF temperature vs. JJA temperature for the years 1880-2006.

2. Make a chart of annual temperature vs. time for the years 1880-2006.

● Title ● axis titles ● Trendline ● trendline equation ● R^2 value ● Is the correlation strong or weak?