aeroman

9 ms·

31.
by aeroman 4y ago
Isn't this a reason to understand more about the climate though? How big cuts are needed, and how fast? What is the consequence of leaving those cuts an extra 10 years? What if we put our energy into cutting methane now and leave CO2 f
32.
by aeroman 4y ago
Although meteorology is in many ways a much older science, I think you are underselling the difference (and importance of computers here). Better computing power means a more accurate forecast, but typically also a longer forecast horizon.
33.
by aeroman 5y ago
You can use this difference in time to calculate the speed (although you also have to account for parallax for an aircraft) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6651096/
34.
by aeroman 5y ago
I agree - this post is really useful, thanks for writing it!
35.
by aeroman 5y ago
I'll add in a vote for the UK Met Office here too (particularly for the UK). AROME is a high resolution 'nested' model, where the region of interest is simulated at a higher resolution that the (often global) driving model. S
36.
by aeroman 5y ago
Thanks! For some reason I thought it had already been mentioned
37.
by aeroman 5y ago
It also turns out that SRM might not even be able to save us if things get really bad. The marine stratocumulus clouds they talk about depend on being able to cool to space (at the top). If you increase CO2 too much, this can no-longer happ
38.
by aeroman 5y ago
Windy is an excellent graphical interface, but as I understand it, this forecast is a re-packaging of the ECMWF one ( https://apps.ecmwf.int/webapps/opencharts ). The GFS forecast (from the National Weather Service) also
39.
by aeroman 5y ago
N2O is included in climate models (e.g [0]), partly (as noted in this article) because it is an effective GHG. It is also important for ozone chemistry and understanding ozone depletion [1]. [0] - https://agupubs.onlinelibrary.wi
40.
by aeroman 5y ago
This isn't the case - I am not aware of any CMIP6 model (the latest generation used in the current IPCC report) that doesn't include clouds. Clouds are definitely complicated, as they are smaller than a typical model gridbox. This
41.
by aeroman 5y ago
The idea is pretty similar, in that the aim to to create cloud droplets large enough that precipitation forms in those clouds (hygroscopic cloud seeding). This is a little different from glaciogenic cloud seeding, where you aim to generate
42.
by aeroman 5y ago
One other thing to add - the Earth is really pretty cloudy. If you care about the clouds, new geostationary satellites are pretty good - (e.g. https://rammb-slider.cira.colostate.edu/ ). If you care about the surface, a lot
43.
by aeroman 6y ago
Shiptracks are pretty cool, not only as a really great 'natural experiment' on cloud processes, but also as they are a meteorological formation that was only discovered with the advent of weather satellites. https://jou
44.
by aeroman 7y ago
Both GOES and MSG (the EUMETSAT version) have similar abilites at night (the both rely on infra-red) The GOES nighttime image is not a real image, but a composite of the IR band (similar to [1]) and a night lights image (probably from VIIRS
45.
by aeroman 7y ago
I would argue that it is not obvious. The impact of ships on low level liquid clouds is a very different process and is comparatively well understood. There is even a wikipedia article on it [1] However, convective invigoration by aerosols
46.
by aeroman 7y ago
It depends which region you are looking at - Amazonas (for example), is much closer to a record. https://www.globalfiredata.org/forecast.html#amazonas It is the biomass burning season, so you do expect some fires anyway - I
47.
by aeroman 7y ago
Of course! The one where the Wellcome building now is? Sorry, I was being a bit slow this morning.
48.
by aeroman 7y ago
> UCL (london) is next door to the kind of grey curtained (bomb-proof chain mail apparently) Which building are you thinking of? The nanotechnology building (image below) does have a grey metal curtain infront of it, but just as a sunsha
49.
by aeroman 8y ago
> From my perspective, the activists started their political campaign to regulate CO2 back when the Science (IPCC FAR) said "the observed increase could be largely due to this natural variability" and I have been suspicious of
50.
by aeroman 8y ago
A lot of the global images of clouds (like this one [1]) are actually made from infra-red images, as making a visible composite is difficult. This means that they can only see high, cold clouds, so you only really see storms. For example,
51.
by aeroman 8y ago
Is it really true that much of the spending goes on bureaucracy? In the UK the depatment of work and pensions spent £167 billion in 2012, of which £6.4b was spend on departmental and operational delivery costs. Admittedly this is still a
52.
by aeroman 9y ago
Unfortunately there is little evidence that cloud seeding is actually able to increase the overall precipitation in most cases [0 - response to NRC report on cloud seeding]. There are spectacular results when glaciating individual clouds [1
53.
by aeroman 10y ago
You can do better than the 1980s - the WRF (Weather Research and Forecasting) model [1] is up to date and will run on a PC (albeit not at a super high resolution). You can provide boundary conditions with freely available data from NOAA [2
54.
by aeroman 11y ago
Do you know what wavelength you were receiving? I would expect to see some clouds. Northern Scandinavia was a bit cloudy today. http://oiswww.eumetsat.org/IPPS/html/MSG/IMAGERY/IR039/BW/WE...