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1500 questions
13
votes
3 answers
Ozone gas (O₃) endurance in the atmosphere
If I release some ozone gas (O3) to the atmosphere, for how much time will it stay there in its original form? Does it change to some other form by reacting with other atmospheric constituents?
Jashan PJ
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13
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1 answer
What can I use as a heatproof, non-magnetic glue for samples?
I, and many of my palaeomagnetist colleagues, often use thermal demagnetization (potentially up to 800°C) in our studies. Usually a stepwise technique is employed, so each sample is heated -- often 20 or more times -- to progressively higher…
Pont
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13
votes
1 answer
Does the Great Pacific Garbage Patch increase sedimentation rates over the patch?
As in, does the debris in the patch area eventually sink?
And if so, could sedimentation measurements over these regions provide a more fine-scaled measure of environmental conditions than sedimentation measurements over other regions?
InquilineKea
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13
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4 answers
How can poor tropical soils be enriched by biological means?
I have been reading a lot recently about agriculture in Africa, and one of the big impediments in a lot of places is the poor quality of the soil. Primarily this refers to a lack of usable molecular nutrients in the soil that plants need (nitrogen,…
kingledion
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1 answer
Can Monin-Obukhov Similarity theory be generalized to tracers?
According to Monin-Obukhov similarity theory, Reynolds-averaged surface layer winds can be expressed by $$\frac{\partial \bar{U}}{\partial z}=\frac{u_*\psi_M(\frac{z}{L})}{kz}$$
The potential temperature can be expressed as$$\frac{\partial…
BarocliniCplusplus
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12
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1 answer
What causes "shallow" moonquakes?
It is thought that "deep" moonquakes are caused by tidal forces exerted on the Moon by the Earth and Sun. Some other sorts of moonquakes are thought to be caused by impacts, or by thermal expansion (when part of the moon rotates into sunlight).…
senshin
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12
votes
9 answers
How to easily remember orientation of latitude and longitude?
Ever since the 3rd grade, I've been troubled by the inability to remember if Latitude runs East/West or runs North/South. I would always stress out BIG TIME during my Geography class.
I'm much older now, and I still have trouble telling them…
Nathan Bird
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12
votes
1 answer
What is this weird looking structure in Ethiopian desert?
I was surfing through Google Maps around Ethiopian desert region (close to the town of Werder/Wardheer) and I found this weird looking structure. It seems like a dried up lake bed, but I can't guess what the straight lines are going out of the…
Chinmay
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12
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1 answer
Project Mogul: Does upper atmosphere indeed have a sound waveguide channel?
While the project was deemed a failure (see below), does the upper atmospheric acoustic waveguide exist?
What are the propagation losses for low-frequency sounds?
Where can one find further information on the acoustical characteristics of the upper…
Deer Hunter
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12
votes
1 answer
Tsunami - Mathematical classification
I'm interested in knowing which type of wave a tsunami is, in a strictly mathematical sense.
I'm gonna cite from Wikipedia for this:
As the tsunami approaches the coast and the waters become shallow, wave shoaling compresses the wave and its…
AtmosphericPrisonEscape
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votes
1 answer
Why are methane spectroscopic parameters harder to determine and relatively poorly known, compared to other Earth trace gases?
In atmospheric remote sensing of methane, a dominant source of error is the uncertainty in spectroscopic parameters. For example, in the retrieval algorithms described by Batchelor et al. (2009), the CH₄ error due to line intensities is estimated…
gerrit
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12
votes
5 answers
Are there water molecules in the oceans which will almost never fall down as rain?
Some oceans are very deep. But is there also current (convection) deep in the ocean so that all water molecules will ones be evaporated and fall down as rain or is it very quite at the bottom so some water molecules will stay at the bottom for…
Marijn
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12
votes
1 answer
Why is WRF most often configured at 3:1 nesting ratio?
In WRF application, nested domain has always been used for weather/air quality modeling for the place of interest in a better resolution. The figure below illustrates this:
I have noticed that the ratio of grid resolution between outer (coarser)…
Han Zhengzu
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12
votes
2 answers
Why snow is white?
Snow is precipitation in the form of flakes of crystalline water ice that falls from clouds. Why is it not another colour?
Sri Ram
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12
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1 answer
How to interpret the use of late and early Tertiary from older literature?
When reading older papers how should I interpret the use of "Late Tertiary" and "Early Tertiary"? Would these periods equate to Paleogene and Neogene, or was there a different accepted boundary age between the Late and Early Tertiary?
equant
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