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There are two activities in my file. And please answer these respectively. Submit electronically via Canvas (.doc, .docx, or .pdf file format).

Please show your work! Please answer all questions in complete sentences. Use three to five sentences to answer questions

Metr 112: Activity 1 Due: Monday, June 11th, 2017 (at 11:59 P.M.) Submit electronically via Canvas (.doc, .docx, or .pdf file format). Please show your work! Email or see me in office hours if you have questions. Each question is worth 2 points (10 points total for this activity). 1. Monthly measurements of atmospheric CO2 concentration at Mauna Loa began in March 1958. The average CO2 concentration for that month was 315.71 ppm. In 2017, the March monthly average value was 407.18 ppm. Calculate the total increase in March concentration from 1958-2017 (59 years). Also calculate the average increase (in ppm) per year. 2. The figure below shows how the mean (average) annual global temperature (for both land and ocean) has changed from 1880 to 2016. It shows temperature anomalies relative to the 30-year average for 1951-1980. Positive annual global temperature anomalies indicate that year was warmer than the 1951-1980 average, while negative annual global temperature anomalies indicate that year was cooler than the 1951-1980 average. The original data (used to create the figure) can be accessed here: http://data.giss.nasa.gov/gistemp/graphs_v3/Fig.A2.txt. Use the annual mean data (2nd column of table) to help answer the following questions. a) When did the warmest year on record occur? What was the anomaly value? b) When did the next three warmest years occur? Give their respective anomaly values as well. 1 c) When was the most recent year that the average annual global temperature was below the 19511980 average? d) Calculate how much the global average temperature increased from 1976 to 2016 (40 years). Then convert this increase to °F (remember that it represents a change in temperature). Now, the global average temperature increased by 1.30°C (2.34°F) from 1916 to 2016. Comment on the significance of your finding, comparing it to the overall 100 year temperature increase. 3. Note that global temperature decreased from 1991 to 1992, and stayed constant from 1992 to 1993, before increasing again. What natural occurrence was responsible for the decrease from 1991 to 1992? 4. September Arctic sea ice extent (shown in the figure below) has been continuously measured since 1979. a) Which two years had the two highest sea ice extents? Provide the values of area as well. b) Which two years had the two lowest sea ice extents? Provide the values of area as well. c) Give a prediction for the year when September Arctic sea ice extent will drop below 1.0 million square kilometers. 5. 3 of the 5 biggest snowstorms in New York City recorded history (going back to 1869) have occurred in the past 13 years (http://www.weather2000.com/NY_Snowstorms.html). A friend says that this proves that global warming is not real. In 4-6 sentences, respond to your friends’ comment (hint: think about the difference between weather and climate). 2
Metr 112: Activity 2 Due: Wednesday, June 13th, 2018 (at 11:59 P.M.) Submit electronically via Canvas (.doc, .docx, or .pdf file format). Please answer all questions in complete sentences. Email or see me in office hours if you have questions. Each question is worth 2 points (10 points total for this activity). 1. If distance to the sun was the only factor in determining surface temperatures of Earth and Venus, which planet would be warmer? Briefly explain why and give the average surface temperatures of the two planets in this scenario, assuming all sunlight is absorbed. Use 3-5 sentences for your response. 2. a) What is the global albedo of Earth? b) What is the global albedo of Venus? c) Which planet absorbs more actual sunlight – Earth or Venus? 3. a) What is the actual average surface temperature of Earth? b) What is the actual average surface temperature of Venus? 4. In 3-5 sentences, explain the primary reason for the difference in temperatures between the two planets. 5. a) Give three examples of greenhouse gases. b) What is happening to the Earth’s greenhouse effect over time, and what is the significance of this change? Use 3-5 sentences for your response. 1

Tutor Answer

sullivnphd
School: Carnegie Mellon University

Attached.

Surname1
Name
Tutor
Course
Date
Metr 112: Activity 1

Question 1
a) The total increase of CO2 in March concentration from 1958-2017 was:

407.18ppm -315.71ppm

=91.47ppm

b) The average increase (in ppm) per year is:

91.47ppm/59 years

=1.55 ppm per year.

1

Surname2

Question 2

a) The warmest year on record was 2016. With the anomaly value of 98.
b) The next three warmest years occurred in 2010 with an anomaly of 71, 2014 with an anomaly of
74 and finally 2015 with an anomaly of 86.
c) The most recent year when the average annual global temperature was below the 1951-1980
average was the year 1985.
d) The global average temperature which increase from 1976 to 2016 (40 years) is:

1.30°C/40 years
=0.0325°C
2

Surname3
If 1.30°C =2.34°F
0.0325°C =?
0.0325°C× 2.34°F/1.30°C
=0.0585°C
The reason for the increase is due to global warming which has been caused by the greenhouse
gases over the period of the 100 years.
Question 3
The natural occurrence which was responsible for the decrease from 1991 to 1992 was a volcano
eruption.
Question 4
September Arctic sea ice extent (shown in the figure below) has been continuously measured since
1979.

3

Surname4
a) The two years which had the highest sea ice extents are:

1979 with a value of 7.8km2 and 1996 with a value of 7.9km2

b) The two years which had the lowest sea ice extents are:

2007 with a value of 4.3km2 and 2012 with a value of 3.6km2.

c) I predict 2050 to be the year when September Arctic sea ice extent will drop below 1.0 million
square kilometers.

Question 5
A big snowstorm does not mean there is no global worming in New York. This means that the
entire winter will have more rain which will rain non-stop if the rain lacks for 3 years therefore
global warming is responsible for that. During the seasons, the temperatures are not normal as
before because of the bipolar whether. The big s...

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Anonymous
Excellent job

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