duanem

7 ms·

31.
by duanem 7y ago
The initial conditions of the weather simulation, which is based on measured data and previous simulation results, are perturbed to within a reasonable range to represent the error in the measurements. Because of the equations being solved
32.
by duanem 7y ago
Thanks. I was going through my memory of previous "Show HN" posts I've read and many are products. If it's any consolation, we don't have a marketing department or budget :-)
33.
by duanem 7y ago
I did read the guidelines before posting and I honestly don't know how to quantify what is spam. I don't believe it's spam since there are new two features, OpenZones and hurricane tracks, that are interesting and useful to p
34.
by duanem 7y ago
I believe the hurricane tracks is a solution to the problem outlined in the HN post 3 days ago on "Misinterpreting hurricane forecasts"[0]. The hurricane tracks are a new addition to Flowx but I believe it can be improved a lot. F
35.
Show HN: Making pro weather data free for Hurricane Dorian
73 points by duanem 7y ago|12 comments
36.
by duanem 7y ago
BTW, these are ensemble models for the NOAA GFS (FV3) and CMC GDPS models. Ensemble models are where the starting conditions of weather simulation is perturbed slightly and the simulations re-solved. They do this 20-odd times and you end up
37.
by duanem 7y ago
I've just implemented this in Flowx[1], the Android weather app I develop. I have the "spaghetti bundle" but it was a major improvement when I added dots indicating the location of the hurricane center with time, as shown in
38.
by duanem 7y ago
My favorite is Flowx[0]. Disclaimer: I'm bias since I'm the developer. Globally, we have GFS (FV3) and GDPS in the free version, and DWD ICON in pro. For north America, we have NAM 12km, NAM 3km, HRRR, RDPS, HRDPS in Pro For Europ
39.
Show HN: Overlay the solar eclipse and weather with Flowx
1 points by duanem 9y ago|0 comments