Climate Journal Assignment.docx
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School
Portland State University *
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Course
312U
Subject
Geography
Date
Dec 6, 2023
Type
Pages
5
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C McArthur
Climate Journal Assignment
Climate Variability and Change – Geography 312U/Science 334U
Fall 2020, Professor Paul Loikith
Due Date: Friday December 4
th
, 10:15 am to the D2L Dropbox Folder
Using the data that you collected over the course of the term, please answer the following
questions in detail. Answers are only for data collected in your journal during this term.
City and state
: Helena, Montana
1.
[Four parts, each worth .5 points]
A) What are the climatological average maximum and minimum temperatures for your
city during the period you were keeping the journal (standard 1981-2010)?
Max: 58 degrees F
Min:
32 degrees F
B) What was the actual average maximum and minimum temperatures for the time
period you were keeping your journal?
Max: 53 degrees F
Min:
28 degrees F
C) Were these warmer or cold than the long-term averages? By how much?
Both were colder. Also, both the average maximum and minimum temperatures were 5
degrees Fahrenheit colder than the long term average.
D) Please provide a chart or charts depicting maximum and minimum temperature
across the term as well as the temperature anomalies.
2.
[Four parts, each worth .5 points]
A)
What is the climatological average amount of precipitation over the time period that
you kept the journal (standard 1981-2010)?
2.27 inches
B)
How much precipitation actually fell during the time period that you kept the
journal?
2.39 inches
C)
Was this more or less precipitation than the climatological average? By how much?
My average was .12 inches more than the long-term average
D)
Please provide a chart depicting total accumulated precipitation across the term.
3.
[Two parts, each worth .5 points]
A)
Were the maximum and minimum temperatures warmer or cooler this year
compared with last year in your city?
Both the maximum and minimum temperatures this year were warmer than last years.
B) Was this year wetter or drier than last year?
This year was a lot wetter than last year
4.
Please describe how the change in seasons affected the data you recorded for your city
over the course of the term. [2 Point]
The change in seasons somewhat affected the weather in Helena. At the beginning of
my journal the highs were in the 70s were at the end, they were in the 40s. There were some
major anomalies that seemed unaffected by the season change though. For instance on
October 20th, the max temperature was 53° F, five days later the max was 14, five days after
that, on October 30th, the max temperature was 70.
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5.
[2 parts worth 1 points each] You can find answers to these questions at
this link
.
A)
Is the long-term temperature trend (50 years at least) for fall (September, October,
and November) at your city positive, negative, or neutral? Please provide a chart
from the link above showing the temperature timeseries and trend at your city.
The temperature trend is positive, warming about .5 degree every two decades
B)
Is the long-term precipitation (50 years at least) trend for fall at your city positive,
negative, or neutral? Please provide a chart from the link above showing the
precipitation timeseries and trend at your city.
The trend is neutral
6.
What is the population of your city? Is it bigger or smaller than Portland? [1 point]
The population is 32,315 (2018) which is a bit over 600,000 less than Portland.