Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 59.2, Problem 1CC
Summary Introduction
To determine: The reason of seasonal fluctuation in the amount of carbon dioxide in the graph with reference to the figure 59.7b given in the text book.
Introduction: Burning of fossil fuels is a major cause of global warming. These fossil fuels are very high in carbon and results in the release of carbon in the atmosphere when they are burned. The concentration of carbon has increased since industrial revolution over the 200 years ago.
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What measurements do the green circles represent? What measurements do the red circles represent? : For approximately how many years has the Mauna Loa Observatory been recording CO2 levels?
This is the Keeling Curve, the record of atmospheric
CO2 as measured at Mauna Loa, Hawaii, over the last
several decades. What do the small oscillations in this
curve reflect?
November 18, 2021
Carbon dioxide concentration at Mauna Loa Observatory
420
410
Full Record ending November 18, 2021
400
390
380
370
360
350
340
8 330
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1960
2000
1965
1970
1975
1980
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2005
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O a.
The change in the direction of ocean breezes
over Hawaii
b.
Annual cycles, driven by the seasonal pattern
of photosynthesis in the Northern Hemisphere
O c. The episodic outgassing of the Mauna Loa
volcano where the observatory is located
d. Annual cycles, driven by CO2 incorporation into
glaciers in winter
Co, Concentration (ppm)
The three images below are snapshots of the atmospheric CO2 concentration in May, July, and September of a year. To interpret the CO2 concentration:
blue/green/yellow indicates lower to medium CO2 concentrations and red/maroon/pink indicates medium-high to highest CO2 concentrations.
Question: Which of the phenomena described below best explains why CO2 concentrations are lowest in the summer when compared to the
spring or fallI/winter?
2006 / 05 / 09
NASA
2006 / 07 / 12
Canon Den ano n n
Cat C m e
NASA
Global Medeling and Assinilten Offoe
Cate ae
2006 / 11 / 13
Gobal Modeling and Assimiation Ofice
NASA
O Higher rates of plant and algae growth in summer lead to higher photosynthesis rates
O Less fossil fuels are emitted by humans in the summer
O More cars are driven by humans in the summer
O Lower rates of plant and algae growth in summer lead to decreased rates of photosynthesis
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