Remote Sensing C

jonboyage
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Re: Remote Sensing C

Postby jonboyage » March 2nd, 2017, 9:15 am

Alright. I don't wanna make a huge deal of this (and thanks for your help guys) but here's the image I'm looking at. I think its transmission

https://upload.wikimedia.org/wikipedia/ ... edning.png

Hopefully it shows up. Anyways, thanks for your help!
Yes, in that case, you're correct. The atmospheric window is present between 8 and 14 micrometers. The test maker probably saw this same image and misinterpreted it.
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Re: Remote Sensing C

Postby Xuax » March 2nd, 2017, 8:12 pm

One unit of spectral radiance is W⋅sr^-1⋅m^-2⋅Hz^-1. Wouldn't this just simplify to J⋅sr^-1⋅m^-2? Hz^-1 is the same as seconds, and W⋅s is a joule. Am I missing something?

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Re: Remote Sensing C

Postby hearthstone224 » March 5th, 2017, 2:00 pm

Sorry Xuax, cannot help you with that question. I'm very confused on that concept in general.

However everyone I have another question:

In a well mixed column of gas, the temperature is

A) The same throughout
B) Highest at the top
C) Highest at the bottom
D) Highest in the middle
E) Stratified in vertical layers in accordance with Bernoulli's laws governing turbulent flow.

The answer is C. Why does this make sense? I don't get it. Thanks!
End of freshman season. Good luck to everyone! No state for us, but nevertheless great season. Regional was out of 12 teams. (CLC)

Mat Sci-> Second at regionals
RSensing -> First at regionals
Towers-> Third at regionals.

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Unome
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Re: Remote Sensing C

Postby Unome » March 5th, 2017, 2:02 pm

Sorry Xuax, cannot help you with that question. I'm very confused on that concept in general.

However everyone I have another question:

In a well mixed column of gas, the temperature is

A) The same throughout
B) Highest at the top
C) Highest at the bottom
D) Highest in the middle
E) Stratified in vertical layers in accordance with Bernoulli's laws governing turbulent flow.

The answer is C. Why does this make sense? I don't get it. Thanks!
I guess it's talking about the pressure (and hence temperature) increasing toward the bottom? Not sure.
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hearthstone224
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Re: Remote Sensing C

Postby hearthstone224 » March 5th, 2017, 2:06 pm

Oh, since P1V1=P2V2 and since at the bottom pressure is highest, then we know the temp would be lower?? Shouldn't it be the other way around then?

Interesting idea.
End of freshman season. Good luck to everyone! No state for us, but nevertheless great season. Regional was out of 12 teams. (CLC)

Mat Sci-> Second at regionals
RSensing -> First at regionals
Towers-> Third at regionals.

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Re: Remote Sensing C

Postby Unome » March 5th, 2017, 2:23 pm

Oh, since P1V1=P2V2 and since at the bottom pressure is highest, then we know the temp would be lower?? Shouldn't it be the other way around then?

Interesting idea.
I'm pretty sure temperature increases linearly with pressure, though I could be remembering wrong (PV=nRT so P~=T)
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Re: Remote Sensing C

Postby hearthstone224 » March 5th, 2017, 2:25 pm

Silly me.

P1/T1=P2/T2. You are right.

Ok, so if the pressure goes up, the temperature must rise with it. That makes sense, thanks guys!
End of freshman season. Good luck to everyone! No state for us, but nevertheless great season. Regional was out of 12 teams. (CLC)

Mat Sci-> Second at regionals
RSensing -> First at regionals
Towers-> Third at regionals.

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Re: Remote Sensing C

Postby hearthstone224 » March 5th, 2017, 2:32 pm

Hey guys, another question!

In some locations, the aerosol optical depth is close to 1.0 At such locations, what percentage of direct sunlight reaches the earth's surface?

The answer I'm not sure of. Is it 100 percent? What is optical depth is probably what I should figure out first. Is it from 0 to 1? Thanks.
End of freshman season. Good luck to everyone! No state for us, but nevertheless great season. Regional was out of 12 teams. (CLC)

Mat Sci-> Second at regionals
RSensing -> First at regionals
Towers-> Third at regionals.

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Re: Remote Sensing C

Postby hearthstone224 » March 5th, 2017, 2:39 pm

While I'm at it, here's another one.

In an energy balance model, what effect does increasing CO2 concetration in the atmosphere have on the total outgoing energy flux at the top of the Earth's atmosphere?

If you guys are curious, I'm getting these question from the Loyola Invite test which hosted 40 or so teams, some of which are going to nationals. Pretty tough test for sure.
End of freshman season. Good luck to everyone! No state for us, but nevertheless great season. Regional was out of 12 teams. (CLC)

Mat Sci-> Second at regionals
RSensing -> First at regionals
Towers-> Third at regionals.

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Re: Remote Sensing C

Postby windu34 » March 6th, 2017, 7:48 am

While I'm at it, here's another one.

In an energy balance model, what effect does increasing CO2 concetration in the atmosphere have on the total outgoing energy flux at the top of the Earth's atmosphere?

If you guys are curious, I'm getting these question from the Loyola Invite test which hosted 40 or so teams, some of which are going to nationals. Pretty tough test for sure.
There will be an increase in total outgoing energy flux
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