23
votes
Accepted
Do satellites decrease the amount of solar radiation reaching Earth?
Does this huge collective quantity of objects (together with space trash) reflect away enough solar radiation to have a measurable effect? Could this affect Earth's climate, mitigating climate change?
...
- 23.1k
18
votes
Accepted
What are these underwater structures near 6°N 85°55'W
As the other answer suggests, these are sonar surveys of the ocean depths. But the answer is a bit more complicated.
The vast majority of the ocean floor has never been mapped. We really only know ...
- 2,028
13
votes
What are these underwater structures near 6°N 85°55'W
Supplementing Wolfgang's answer, here's a National Oceanographic and Atmospheric Administration story that talks about the appearance of ocean-bottom artifacts:
With legions of people around the ...
- 3,474
12
votes
Accepted
What is this narrow band of clouds?
Given the weather patterns, it looks like Google Earth is generating those cloud overlays from some recent (i.e., the current day) satellite images. That line is suspiciously close to the edge of ...
- 3,940
11
votes
Why are atmospheric BrO and ClO important to measure by satellite?
BrO and ClO significantly deplete ozone from the atmosphere.
Researchers at Harvard University state:
It is a remarkable fact that perhaps the most important observation coupling climate forcing ...
- 24.6k
8
votes
Accepted
Convert NO2 concentration in Sentinel-5P data from mol/m2 to μg/m3 on the ground level
...measured in mol/m² within the total or tropospheric column. Is it possible to deduce concentrations for a specific slice of the troposphere?
Not really, since you have a crucial bit of information ...
- 11.6k
7
votes
Accepted
How to open old GOES-1 satellite image files downloaded from NOAA CLASS
Unfortunately, the older weather satellite data is, the harder it is to read.
Perhaps NOAA's Weather and Climate Toolkit can open it.
The old stuff usually comes in tightly packed binary formats that ...
- 11.6k
7
votes
Accepted
How to remove 'silk braid' noise in satellite data?
You ask, How to remove these abnormal value for more precise data?
The short answer is that you might be able to make your data look more representative of the natural 'truth', but you will probably ...
- 11k
7
votes
How to convert mol/m^2 to total mass ( e.g gram, kg etc )?
$\rm \frac{mol}{m^2}$ shows the amount of $\rm{NO_2}$ in the atmosphere over a square meter of surface area - in mols.
The molar mass of the $\rm{NO_2}$ is $14+2\cdot 16=46$. It means, the mass of 1 ...
- 660
6
votes
Accepted
Have these optical satellite ground station locations been chosen for clear skies?
Yes, mean cloud cover is routinely measured from satellites. Like all satellite data (and in fact all measurements), it does have an uncertainty, but for the purpose of this question the satellite ...
- 11.6k
6
votes
Accepted
How to find SMAP Satellite acquisiton plan?
As @gerrit pointed out, the Pytroll project has a couple of package which could be useful.
To answer your question and get the next overpasses for the next twelve hours above a given location, you can ...
- 176
5
votes
Accepted
Satellite image displaying as panchromatic
An RGB image can not be rendered if you only supply information for one color channel. This is because three channels are needed: Red, Green and Blue. Different software will deal with this invalid ...
- 17.6k
5
votes
Have these optical satellite ground station locations been chosen for clear skies?
This is just supplemental information to the accepted answer by @gerrit
I took the ESA cloud cover fraction map provided there, and added dots that represent the approximate locations of the ground ...
- 7,074
5
votes
How to remove 'silk braid' noise in satellite data?
Thanks for @Kwinkunks's answer. I have read this paper. And this figure may explain something important.
What I have already done is plotting the original data like the first subplot.
From Destriped -...
- 2,449
5
votes
Why are atmospheric BrO and ClO important to measure by satellite?
pretext: Seeing this question on the list of network questions caught my interest to the site.
I agree with the arguments put forward in the answer by Fred, gravitating on the radical character of ...
- 596
4
votes
What produces these distinct shapes in the Rub' al Khali seen from space?
This a great example of "self-organization" in a geomorphological system; this one an oscillating system at a fairly large scale. On a much smaller scale, you find similar structures on sand dune ...
- 2,783
4
votes
What is principle of inverse modeling?
To my understanding, the question refers to studies which aim to estimate pollutant emission fluxes using satellite retrievals of atmospheric constituents. Mathematically, this means estimating the ...
- 391
4
votes
Difference between Meteosat and Insat satellite Images
Meteosat:-
The Meteosat series of satellites are geostationary meteorological satellites operated by EUMETSAT under the Meteosat Transition Programme (MTP) and the Meteosat Second Generation (MSG) ...
- 375
4
votes
What's the minimum number of days needed for reporting a "monthly average" of daily satellite retrievals?
Provide a monthly average in every grid cell, and describe how many measurements were used for each cell.
There is no fixed rule for the minimum number of days for reporting a monthly average. A ...
- 11.6k
4
votes
Accepted
Giant Cavern the Size of Manhattan Under Thwaites Glacier in West Antarctica - how was satellite and airborne radar data combined?
The paper basically combines multiple datasets to figure out the changes in ice surface elevation and ice thickness at tidal and multi-year timescales. That way they were able to study grounding line ...
- 17.6k
4
votes
Accepted
What is the use of HV or VH polarization in Radar?
In the case of a ground looking radar, the cross-polarized signals HV and VH generally increase with surface roughness. For example, dense vegetation is one of the more depolarizing surface types ...
- 321
4
votes
Accepted
In meteorology, are satellite data "better" than reanalysis data?
Unfortunately, your question has no answer. Both have errors. Both can be unreliable. Your choice really depends on how you plan on using them.
Satellites instrument contain sources of error, such as ...
- 8,684
4
votes
Skin temperature, live update satellites, are there any? If not, why not?
It would be good to have satellites that gave current readings of skin temperature so that farmers could see if their crop was freezing or too hot
This is not generally possible in near real time (&...
- 11.6k
3
votes
How to open old GOES-1 satellite image files downloaded from NOAA CLASS
Since version 0.43.0 Satpy is able to read GMS-05 and GOES-09 data in VISSR archive format: https://satpy.readthedocs.io/en/stable/api/satpy.readers.gms.gms5_vissr_l1b.html
- 131
3
votes
How to find SMAP Satellite acquisiton plan?
This is not a satellite acquisition plan, but it may be something to get you started. I've used the Python package Skyfield to get the subsatellite point of SMAP based on the most recent two line ...
- 7,074
3
votes
Why are atmospheric BrO and ClO important to measure by satellite?
Regarding the Geostationary Environmental Monitoring Spectrometer (GEMS) itself:
The instrument's purpose is given as
Ozone profile and total-column or gross profile of other species. ...
- 23.1k
3
votes
Now Mars is pulsing 3 times per night in the UV, can anyone explain these waves in simple terms? Do these waves have analogies on Earth?
The Martian nightglow comes from molecules in the atmosphere that react with solar radiation, carry it over to the night side, and give off the energy they gained as ultraviolet light as they free-...
- 3,666
3
votes
Cluster of cow burps now mapped; which satellites contribute to GHGSat's high-resolution maps of ppb levels of methane emission? How do they do it?
A quick online search shows the GHGSat web page discussing the satellites and their capabilities (emphasis mine):
GHGSat's vision is to become the global reference for the remote
sensing of ...
- 1,186
Only top scored, non community-wiki answers of a minimum length are eligible