EPS 7 Homework 8

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Ocean acidification puts 60% of the carbon burned by humans into the ocean on a timescale of

1,000 years

What is the timescale for a human to grow to its maximum height?

10

The acidified ocean is returned to its original pH on a timescale of

10,000 years

After ocean acidification and dissolution of calcium carbonate, silicate weathering removes the remaining 20% of the extra carbon still in the atmosphere on a timescale of

100,000 years

Borehole paleothermometry reveals a mean global ground-temperature increase over the past 100 years of

1K

Roughly what fraction of the carbon burned by humans is still in the atmosphere as CO2 after 10,000 years?

20%

By how much have Berkeley's warm-season maximum temperatures increased over the past 125 years?

2K

If humans burn 5000 GtC in a couple centuries, roughly what will the atmospheric concentration of CO2 be in the year 12017?

750ppm

What chemical reaction ultimately removes the excess carbon from the atmosphere and the ocean?

CaSiO3 + CO2 → CaCO3 + SiO2

What is the first molecule that CO2 forms when dissolved in water?

H2CO3

What chemical reaction describes ocean acidification?

H2CO3 → H+ + HCO3−

In what form is most of the dissolved carbon in the ocean?

HCO3-

Which of the following federal agencies does not have its own climate models? (DOE, NASA, NSF, NOAA, USPS)

USPS

What is an acid?

a molecule that adds H+ ions to water

What is an AMSU?

advanced microwave sounding unit

What is HCO3-

bicarbonate ion

What is CaCO3

calcium carbonate

What is Co3--

carbonate ion

What is H2CO3?

carbonic acid

The acidification of ocean is retired to its original pH by

dissolution of calcium carbonate

The higher the k and/or p of some gas in the atmosphere, the ___ the effective height of emission to space

higher

What is H+?

hydrogen ion

What is so super about a supercomputer?

it has many ordinary computers connected together

An AMSU measures temperature at many heights in the atmosphere by measuring atmospheric emission at multiple wavelengths on the side of an oxygen resonance that each have a different

k and so a different T=1 level

For climate studies, what are two most important instruments inside a Stevenson enclosure?

min and max temperature thermometers

With the exception of high-energy nuclear reactions, which of the following is always conserved?

momentum, energy, mass

What kind of orbit do most AMSUs fly?

polar

The purpose of a Stevenson screen is to

reflect away sunlight, provide shade, provide a ventilated enclosure

What is serial computing?

solving a single problem on a single computer

The timescale for a process is

the time it takes for the process to be mostly done

Studies of boreholes reveal that these layers of the sound are warmer than they would be in the absence of global warming

upper layers

What are primary pieces of evidence for global warming?

vanishing tropical glaciers, borehole paleothermometry, Stevenson-screen thermometers, AMSU data

AMSU records show the atmosphere

warming at low altitudes and cooling at high altitudes

What do we call a fundamental law of physics that says that stuff is neither created nor destroyed?

conservation of energy

What is the most certain way to date glacial ice?

counting layers

Which of the following is a violation of conservation of momentum? (tree grows, ball falls, car races)

none

Which of the following is a violation of conservation of energy? (tree grows, ball falls, car races)

none of the answers

What is parallel computing?

solving a single problem on multiple computers at the same time

The unique fingerprint of CO2 induced global warming is

warming at low altitudes and cooling at high altitudes

What is acidic water?

water with a high concentration of H+ ions


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