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Vehicles Emissions

What is the suitable handheld device to measure the CO2, CH4 and N2O emissions from the tailpipe of cars? and what the steps to convert the emissions that will measure by the handheld device in unit ...
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1answer
12 views

Can I see curvature of the Earth on a picture

I've been piloting a drone yesterday and made a video hovering at around 100m, the visibility was very good. I've shown the video to a friend of mine and we were arguing whether it's the curvature of ...
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0answers
8 views

Has the Average Volume of Volcanic Emissions Been Constant Since the Last Major Fluctuation?

Are total volcanic emissions worldwide constant, or do they rise and fall? We know there are large fluctuations on a scale of tens of millions of years, but is the total volume of emissions stable on ...
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0answers
19 views

What type of vibrant colored mineral is this? [on hold]

Bought this at an antique store in London Derry Nothern Ireland. It was sold with a piece of Olivine in Basalt, the shop owner did not know what it was.It weighs 75 grams and is 11cmx4cm
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0answers
18 views

If someone does not drive a car for a year how much pollution would that save? [on hold]

If there is an average figure per person for their car pollution output, and someone did not drive for a year, then I am trying to work out how much pollution is saved. This could be a simple question ...
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2answers
23 views

At what altitude a ballon is no longer pushed by the wind?

In 1960, NASA launched the "Echo 1A" balloon which had amongst its objectives to test the triangulation principle with satellites. I wonder why we don't have more "ballon" satellites for our GPS ...
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0answers
15 views

Can someone tell me if this is Pudding Rock ? When wet looks like Blood on it [on hold]

Can someone tell me if this is Pudding Rock ? When wet looks like Blood on it .I found it in my yard when I was putting In a new fence where I live maybe 2feet in the ground . It looks like teeth are ...
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2answers
35 views

Could burning all fossile fuels (available on earth) render the atmosphere unbreathable?

What if humanity burns all fossil fuels it can find, putting the negative effects of climate change aside, would the enormous amount of CO2 in the atmosphere eventually make it unbreathable?
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1answer
33 views

Could an earthquake on flat land still kill someone without any buildings/boulders or such near by?

Suppose you were sitting near the epicenter of an earthquake, sitting down on flat land without much else near by, maybe some grass. Is it still possible that say, a magnitude 8 or 9 earthquake would ...
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0answers
20 views

What data of agricultural yield to use for India?

I am trying to understand the role of various meteorological factors on agricultural yield over India. Is there a dataset available directly or an indirect proxy of agricultural data, maybe satellite, ...
1
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0answers
17 views

How to infer local precipitation from reanalysis data?

Let's say I'm extracting precipitation from a single pixel or region from a reanalysis (MERRA-2, ERA-5, Interim) dataset. I can infer a distribution for the daily data (Gamma, Pearson-III, e.g. link),...
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3answers
45 views

Why is reverse osmosis desalination the dominant method used and not heat-based methods? Also why is brine being dumped back into the ocean? [on hold]

So I was recently watching this video regarding desalination efforts around the world and the viability of desalination as a means to provide humans with freshwater. I had a few questions: 1 - They ...
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0answers
14 views

Are retail prices a good proxy of agricultural yield? [on hold]

I am trying to get district level yield data for India, which is obviously not available, but I somehow have got access to the district-wise daily retail prices
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0answers
22 views

Topex/Poseidon satellite data reading and extracting

I'm trying to figure out how to read and extract Topex/Poseidon satelite altimeter data from the Physical Oceanography Distributed Active Archive Center (PO.DAAC). Link to product: https://podaac.jpl....
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0answers
26 views

why isotherms are skwed to 45 degree in tephigram?

I have studied about tephigram. In all the books, it has written that isotherms and dry adiabats are skewed to certain degrees. But practically I could not connect it. how is it possible that constant ...
2
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1answer
45 views

What's really happening with “stormquakes”?

The PBS Newshour article Scientists discover big storms can create ‘stormquakes’ says: A stormquake is more an oddity than something that can hurt you, because no one is standing on the sea floor ...
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2answers
30 views

How do fold mountains form?

I know mountains form due to the collision of tectonic plates. But how does such a slow collision have such great impact as to create huge mountains. Is there any intuitive explanation for this?
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0answers
38 views

What type of rocks are in these pics? [closed]

I am new to collecting rocks. A neighbor moved out of town and left these tossed in the yard. Unfortunately, I have no information on where they were originally collected
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1answer
40 views

Thunderstorms vs Thundershowers

What is the difference when the weather report says thunderstorms vs when it says thundershowers and the picture is still the same?
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2answers
76 views

Could this cloud be artificially formed?

This photo was taken at 3000 m above sea level in an open field, during the day.
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6answers
5k views

How are hillsides farmed?

I would assume hilly land is more labor-intensive to farm than flat land, and more exhausting to humans and animals if traditional farming techniques are used. How do farmers plant and plow on ...
1
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0answers
59 views

How did these dark lenticular features form? (Near Hoganekkal Falls India.)

These photos were taken near Hoganekkal falls in south India. The darker lenses appear to be the same rock type but have varying thickness and do not form a continuous layer. How did this structure ...
3
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1answer
48 views

Clouds altitude

I'm amateur photographer and professional programmer and I'm trying to create an application to predict exceptionally beautiful sunsets (something like https://www.flickr.com/photos/photogtom43/...
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0answers
36 views

Not sure what type of rock this is? [closed]

My 8 yr old son and I are wondering what type of rock this is?
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0answers
22 views

Can any natural process explain this rate of CO2 increase? [duplicate]

Can any natural process explain this rate of CO2 increase? [![1000 years of CO2][1]][1] [1]: https://i.stack.imgur.com/MO0mK.png The prior similar question used different data as its basis. This ...
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0answers
15 views

Average # of days with thunderstorms

What is the average number of days with thunderstorms for each month in Waynesville, North Carolina
2
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1answer
114 views

How Could Sheep Graze these Steep Hillsides Without Leaving any Marks?

Here are two images of English hill figures (The Cerne Abbas giant and the Uffington white horse): These hillsides, which are obviously grazed by sheep, show tracks that form numerous contour lines ...
2
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0answers
37 views

How does extra carbon dioxide in the atmosphere contribute to radiative forcing?

The CO2 absorption spectrum taken at 200 mmHg partial pressure, beam path length = 10 cm, resolution = 4 cm^-1 shows that light can only travel a couple hundred meters before being completely absorbed ...
2
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2answers
84 views

Loop in the continental divide

Various maps of the Continental Divide (the hydrological feature, not the trail) contain a loop that looks like this: What is the hydrologic meaning of the loop in Wyoming? Even if it's a basin, ...
2
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0answers
32 views

Night sky visibility prediction [closed]

Given a location (e.g. Osoyoos, British Columbia) and human eyes only, what's the ranges for the nights of the year most likely to give clear astronomical viewing? What historical data sources might ...
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0answers
18 views

Sustained WS discrepancy for Hugo 1989 in Charleston

I am reviewing Sustained Wind Speed data for several locations associated with Hurricane Hugo in September 1989. HURDAT2 data shows the Max Sustained Wind Speed at Landfall to be 120 knots at Isle of ...
-3
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0answers
36 views

How high of a carbon fee would reduce global emissions by 50% in 15 years? [closed]

The happy news is that it looks like I was wrong. As long as my side-by-side calculations are correct HR 763 catches up to and passes EMF 32 in the sixth year. OVERVIEW OF THE EMF 32 STUDY ON U.S. ...
2
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0answers
10 views

Does fold tightness correlate to deformation intensity?

I'm studying a migmatite with two overprinting fold structures. The first (Dn+1) is tight and the second (Dn+2) is gentle. Would it be fair to assume that, since Dn+1's tightness is, well, tighter, ...
2
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2answers
110 views

How did these grassy hillsides in Colombia become terraced?

In Colombia, many grassy hillsides are terraced, like in the photo below. This terracing also occurs on hillsides that never had these palm trees on them. I assume that it also occurs outside of ...
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1answer
22 views

Local Weather Forecast (Self-Learning Algorithm)

First of all, the question! : Is it possible to predict local weather tendencies for the upcoming hours (let's say 2-3 hours) using only local data? If yes, which data is needed to make such ...
4
votes
1answer
64 views

Why do wind speeds often jump from 20 knots to 40 knots

Looking at the BBC weather forecasts I've often noticed that strong winds will often be over 40 knots (for the UK at least). Most of the time (nearly always) the wind will jump from 18-22 knots to ...
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0answers
29 views

How does nature produce circles of ice?

The YouTube video This is How Nature Produces Perfect Ice Discs shows an example of a circle of ice produced by nature. How is it possible for nature to produce one like the one in that video. ...
3
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1answer
35 views

Where does all the earth from surface mining go?

Surface mining digs up a lot of earth and rock. After the desired ore is separated, where do the earth and rock mined go?
5
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1answer
53 views

Does clearing snow contribute to climate change?

I've been reflecting on climate change and pondering how much of it is truly man-made. Anyone who's shoveled a walkway know that the snow melts faster beside the walkway than it does in the middle of ...
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1answer
25 views

Peak season for Thunderstorms

What causes different locations to get their peak season for thunderstorms at different times of the year like some locations get the most thunderstorms in a July some in June and some in August and ...
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0answers
7 views

What are phyical properties of the adakitic melts?

I want to learn the physical properties (viscosity, temperature, volatile content) of adakitic melts. Which describes the type of the volcanic activity that caused by adakitic melts, effusive or ...
2
votes
1answer
46 views

Why does foliage coloration vary on north/south sides of ridge (Northeast USA)?

I recently flew into New Jersey over the Delaware river and took this photo of the ridgeline at the Delaware Water Gap. The trees are mostly green (early October) but on the south-east side of the ...
2
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2answers
85 views

Is this classification of mineral formation environments correct?

I am writing an app for students that consist in 180 sheets of the most common minerals on Earth's Crust. One of the fields of the sheets is environment of formation. It is important to me to ...
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2answers
45 views

Does Start / Stop technology in cars have an impact on air quality? [closed]

I have repeatedly heard from various car enthusiasts that start stop technology has no benefit (or the tiniest smallest negligble benefit) to air quality so they turn it off entirely. Does it have an ...
0
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1answer
52 views
0
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1answer
27 views

Precipitation and Elevation

Does precipitation increase or decrease as elevation increases? Because I heard that in the mountains they get more precipitation due to the orographic effect and how the mountains drain the moisture ...
0
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2answers
75 views

Deserts and Humidity

How is that a general rule of thumb that less humidity equals more rain? Deserts don’t get much rain and humidity is also very low. Rainforests get a lot of rain when the humidity is very high so how ...
1
vote
1answer
52 views

Will geothermal cooling be greatly affected by global warming?

Geothermal cooling has been an attractive option in the U.S. Northeast since it emits very little carbon into the atmosphere compared with compressed refrigerant systems which use lots of electricity....
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2answers
33 views

Why smokes are considered a factor of global cooling when analyzing nuclear winter scenarios, but arent when analyzing global warming scenarios?

In many articles in internet (I'm citing a couple for the sake of the question) , smokes from the fires (composed mainly of CO2 and CO) following a nuclear war would cool the atmosphere and would ...
0
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1answer
48 views

Humidity and Rainfall

Usually the higher the humidity the more rainfall we get like in the summer here in Asheville, North Carolina we get a lot of showers and thunderstorms in the summer from the high humidity but I saw ...

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