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SOEE2160 Quiz 1
SOEE2160 Quiz 1
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Quiz on Lectures 1-3
Flashcards
26 cards
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Practice quiz
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Questions
26
Answers
1
Which of the following best describes a climate proxy?
Record of ancient historical climate change
Measurement of climate using a scientific instrument
Recorded quantity from which historic climate is inferred
Historical written records describing the climate
2
Over the period 1901 to 2012 global mean temperatures rose at a rate of:
1 oC per decade
2 oC per decade
0.08 oC per decade
0.2 oC per decade
3
How does the rate of rise of global mean temperature from 1979-2012 compare to 1901-2012?
About five times as fast
About the same
About twice as fast
About half as fast
4
Which one of the following is a drawback of tree-ring climate proxies?
A mixture of climate conditions is recorded
They provide only average temperature over about 100 years
They only go back about 500 years
You can only use living trees
5
What are Dansgaard-Oeschger oscillations?
Temperature fluctuations in the Holocene
Temperature fluctuations in the deglaciation period
Temperature fluctuations in glacial periods
Temperature fluctuations caused by Earth’s orbit
6
The NAO is
The Nocturnal Atmospheric Oscillation
The Natural Arctic Oscillation
The North Atlantic Oscillation
7
Over what period do we have “instrumental” measurements of temperature?
Over the last 100,000 year
From medieval times
Over the satellite era from the 1960s
From about 1850
8
What affected climate over the last 65 Myears that isn’t relevant to current climate change?
Change in solar brightness
Changes in Earth’s orbit around the Sun
Silicate weathering
9
What's the shortest timescale of climate change caused by Earth’s orbital variations?
20 thousand years
1 million years
4000 years
400 thousand years
10
How do greenhouse gases vary during glacial cycles?
They stay roughly constant
They rise with increasing temperature
They fall with increasing temperature
11
What best describes the Medieval Climate Anomaly?
A general cooling of the northern hemisphere
A multi-century period of global warming
A period of warming that we don’t understand
A multi-century period of regional warming
12
How quickly has Arctic summer sea ice been receding since 1980?
About 1% per decade
About 5% per decade
More than 10% per decade
13
What explains the big spikes in temperature change in the stratosphere in 1982 and 1991?
Changes in solar output
Volcanic eruptions
Strong El Nino events
We don’t know
14
Which is correct in terms of the Southern Hemisphere (SH) and Northern Hemisphere (NH)?
Since 1980 the NH has warmed but the SH has cooled slightly
Since 1980 the NH and SH have warmed the same
Since 1980 the SH has warmed 0.4 oC more than the NH
Since 1980 the NH has warmed about 0.4 oC more than the SH
15
How has the stratosphere responded to global warming?
It has not changed much
It has cooled
It has warmed more rapidly than the troposphere
16
How does the change in temperature in the Arctic compare to the rest of the planet?
It has cooled
It has hardly changed
It has warmed more rapidly
It is very patchy
17
A climate anomaly is:
A poorly understood aspect of climate change
A short period of rapid climate change
A change in climate relative to a reference period
18
Which of the following proxies goes the furthest back in time?
Written records
Ice-core oxygen isotopes
Tree rings
19
What is the main explanation for the temperature variations over the last 400 kyears?
Changes in ice sheets
Changes in greenhouse gases
Changes in Earth’s orbit around the Sun
Changes in solar brightness
20
Over the last 40 years, how have temperatures changed over the planet?
They have risen only in the northern hemisphere
Sharp rises in some places, but not much change elsewhere
Increases and decreases, but an average increase
They have risen almost everywhere
21
Over a glacial cycle, how large are changes in CO
2
compared to those since the pre-industrial?
Much larger
Tiny in comparison
Approximately the same
22
Which of the following is
not
an “orbital parameter”?
Obliquity
Eccentricity
Ellipticity
Precession
23
The oxygen isotope ratio is related to:
The evaporation and precipitation of water
The abundance of carbon dioxide
Oxygen molecules stored in air bubbles in ice
24
What is the global pattern of changes in precipitation over the industrial period?
A general increase, just like temperature
No significant change
Regionally variable
A general decrease
25
Which of the following is
incorrect
? [choose any number]
The medieval period was much warmer than today
The Little Ice Age was globally 2C cooler than today
1983-2012 was likely the warmest in the last 800 years
26
Since 1880, global mean sea level has risen by about
90 cm
20 cm
1 cm
