search

projecthorus / sondehub-tracker

🎈 Frontend for SondeHub Radiosonde Tracking
https://v2.sondehub.org
MIT License
59 stars 24 forks source link

Radiosonde Launch Site - Launch Times & Parameters #114

Open darksidelemm opened 2 years ago

darksidelemm commented 2 years ago

To help provide better predictions of radiosondes launches for all the launch sites that appear on the tracker map, we need information on:

What times of the day, and what days of the week radiosondes are launched. (e.g 00Z/12Z Monday-Friday) What the target ascent rate, nominal burst altitude, and landing descent rates are. (e.g. 5m/s ascent, 26km burst, 6m/s descent) Some of this information we can get from other sources (e.g. the giant database of radiosonde telemetry that is SondeHub), but local knowledge can help too!

If you have any of the above information for a launch site near you, please reply to this issue so it can be incorporated in.

EDIT (Luke Prior): Please use the Google Form your response will be automatically posted here.

https://forms.gle/GserZmFAif5z9QXH9

LukePrior commented 2 years ago

Do you want the actual time the balloon leaves the launcher?

We made the decision to base all the times of model times so 00Z, 03Z, 06Z, 09Z, etc. We did this to simplify the entire process and in the backend assume launches happen 45 minutes before this time which works well enough for our use case.

HoshenKadosh commented 2 years ago

Hi, the flight profile for 2 stations in my area is not correct, and by that the prediction that is shown is not accurate.

Station id 40179: Ascent rate: 4 m/s Burst altitude: 27,500 m Descent rate: 2.5 m/s

Station id 40186: Ascent rate: 5.5 m/s Burst altitude: 24,000 m Descent rate: 2.5 m/s

Thanks!

LukePrior commented 2 years ago

Hi, the flight profile for 2 stations in my area is not correct, and by that the prediction that is shown is not accurate.

Station id 40179: Ascent rate: 4 m/s Burst altitude: 27,500 m Descent rate: 2.5 m/s

Station id 40186: Ascent rate: 5.5 m/s Burst altitude: 24,000 m Descent rate: 2.5 m/s

Thanks!

Ok should be updated

F5MVO commented 2 years ago

TRAPPES is 48.772952 , 2.012325

rg422 commented 2 years ago

San Diego, Miramar MCAS/Mitscher Field Airport (United States)

Callsign is KNKX at MCAS Miramar, Remove part about Mitscher Field Airport. Launches everyday at 11 and 23 zulu

LukePrior commented 2 years ago 
{
    "station": "72293",
    "rs_types": [
      [
        "24",
        "400.65"
      ]
    ],
    "position": [
      -117.12369,
      32.845125
    ],
    "alt": 133,
    "station_name": "San Diego, Miramar MCAS/Mitscher Field Airport (United States)",
    "times": [
      "0:00:00",
      "0:12:00"
    ],
    "burst_altitude": 32924,
    "burst_samples": 251,
    "burst_std": 2704,
    "descent_rate": 12.6,
    "descent_samples": 224,
    "descent_std": 2.7
}

@rg422 what changes are you suggesting, just the name change?

darksidelemm commented 2 years ago

I believe that name came from the WMO launch site list. Any ideas where the Mitscher Field part comes from?

markdconner commented 2 years ago

I believe Mitscher Field is still the proper name of the airfield itself within MCAS Miramar.

73 de Mark N9XTN

On Mon, Oct 11, 2021 at 9:41 PM Mark Jessop @.***> wrote:

I believe that name came from the WMO launch site list. Any ideas where the Mitscher Field part comes from?

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/projecthorus/sondehub-tracker/issues/114#issuecomment-940605125, or unsubscribe https://github.com/notifications/unsubscribe-auth/ALZK4QGH5REV4A7X7DD2OI3UGON5PANCNFSM5CRQC22A . Triage notifications on the go with GitHub Mobile for iOS https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675 or Android https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub.

ka9q commented 2 years ago

MItscher Field is indeed the name of the military airfield at MCAS (Marine Corps Air Station) Miramar (ICAO KNKX). The US military likes to overload its facilities with names of war heroes and senior brass.

On 10/11/21 19:41, Mark Jessop wrote:

I believe that name came from the WMO launch site list. Any ideas where the Mitscher Field part comes from?

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/projecthorus/sondehub-tracker/issues/114#issuecomment-940605125, or unsubscribe https://github.com/notifications/unsubscribe-auth/ADJDI45LWMLMVFMR3QFOT3TUGON5NANCNFSM5CRQC22A. Triage notifications on the go with GitHub Mobile for iOS https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675 or Android https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub.

ka9q commented 2 years ago

Correct.

On 10/11/21 20:06, markdconner wrote:

I believe Mitscher Field is still the proper name of the airfield itself within MCAS Miramar.

73 de Mark N9XTN

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/15/2021 3:18:24 Suggestion Type: Modify Existing Site Station ID: 12120 Station Name: Leba (Poland) Station Coordinates: 54.7536,17.5347 Station Altitude: 2

Sondes Launched: MRZ (19), MP3-3MK Launch Times: daily 11:30 and 23:30 UTC Ascent Rate: 5 Burst Altitude: 27000 Descent Rate: -20 Station Notes: Further Information:

Timestorm commented 2 years ago

Station Name: AMF2 Crested Butte (United States) Sonde Type: RS41-SGP Burst Altitude: 29000 Ascent Rate: 4 Decent Rate: -9 Launch Times: Daily 11:30 & 23:30 UTC

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/15/2021 18:33:48 Suggestion Type: Modify Existing Site Station ID: 10304 Station Name: Meppen (Germany) Station Coordinates: 52.7156,7.3175 Station Altitude: 21

Sondes Launched: Launch Times: Monday to Friday at 6, 9 and 12 a.m. local time (CET/CEST) Ascent Rate: Burst Altitude: 23687 Descent Rate: 4.9 Station Notes: Further Information:

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/17/2021 0:59:57 Suggestion Type: Modify Existing Site Station ID: 74560 Station Name: Lincoln, Il. (United States) Station Coordinates: 40.1517,-89.3383 Station Altitude: 178

Sondes Launched: LMS6-1680 (82) Launch Times: Ascent Rate: Burst Altitude: 32889 Descent Rate: Station Notes: Further Information: Changed the burst altitude to reflect the average of the last launches

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/17/2021 18:40:05 Suggestion Type: Modify Existing Site Station ID: 33966 Station Name: Bilohirsk (Ukraine) Station Coordinates: 45.04555,34.59835 Station Altitude: 217

Sondes Launched: MRZ (19) Launch Times: Ascent Rate: 5 Burst Altitude: 30000 Descent Rate: 15 Station Notes: Further Information:

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/19/2021 22:25:13 Suggestion Type: Modify Existing Site Station ID: 07255 Station Name: Bourges (France) Station Coordinates: 47.0627,2.4335 Station Altitude: 165

Sondes Launched: DFM-09 (17) Launch Times: Daily 12Z, Daily 07Z Ascent Rate: Burst Altitude: Descent Rate: Station Notes: Further Information: http://radiosonde.eu/RS02/RS02G.html#ancre1718030

ka9q commented 2 years ago

What's the meaning of the "Descent rate" parameter? The descent rate varies with the square root of the atmospheric density, which is exponential with altitude. At burst it's typically 1% of the surface density so the descent rate varies over a 10:1 range, from 100-150 m/s at burst to 10-15 m/s at the surface. Which number do you want?

On 10/14/21 9:18 AM, Luke Prior wrote:

Google Form Submission

Time Submitted: 10/15/2021 3:18:24 Suggestion Type: Modify Existing Site Station ID: 12120 Station Name: Leba (Poland) Station Coordinates: 54.7536,17.5347 Station Altitude: 2

Sondes Launched: MRZ (19), MP3-3MK Launch Times: daily 11:30 and 23:30 UTC Ascent Rate: 5 Burst Altitude: 27000 Descent Rate: -20 Station Notes: Further Information:

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/projecthorus/sondehub-tracker/issues/114#issuecomment-943511969, or unsubscribe https://github.com/notifications/unsubscribe-auth/ADJDI4ZCNPBVMB57XDZ5NBLUG37F5ANCNFSM5CRQC22A. Triage notifications on the go with GitHub Mobile for iOS https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675 or Android https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub.

ka9q commented 2 years ago

The observed descent rates for the NWS sondes from KNKX (Miramar MCAS) seem to vary a lot. My hypothesis is that this depends on how much of the balloon is left after the burst, as this affects drag. Usually you'll get most of it but sometimes there's little more than the neck of the balloon.

The KNKX sondes don't use parachutes, and I haven't actually seen one land yet, so I don't actually know whether the sonde or the balloon comes down first. But I've observed that the balloons usually land downwind of the sonde. This tells me that the sonde lands first so the balloon has the smaller ballistic coefficient, ie, it acts like a (poor) parachute. So how much of the balloon is left probably does matter to the descent rate.

--Phil

On 10/19/21 9:01 AM, Phil Karn wrote:

What's the meaning of the "Descent rate" parameter? The descent rate varies with the square root of the atmospheric density, which is exponential with altitude. At burst it's typically 1% of the surface density so the descent rate varies over a 10:1 range, from 100-150 m/s at burst to 10-15 m/s at the surface. Which number do you want?

darksidelemm commented 2 years ago

The descent rate value we are after is the 'sea level' descent rate (descent rate on landing is a good enough estimate), which is what is used by the predictor. We certainly appreciate that the landing descent rate will vary a lot, so this is really just an estimate.

rs1729 commented 2 years ago

Beauvechain (Belgium) didn't use parachutes for quite some time. Depending on how much was left of the balloon, the descent could be slow, however the descent rate could suddenly increase if parts of the balloon left overs departed. Difficult to predict. Now they use parachutes and iMet-4, and often it runs out of battery before it lands...

ka9q commented 2 years ago

Runs out of battery, or simply switches off? The RS41-SGPs flown here (Miramar MCAS in San Diego) advertise 8.5 hour burst timers, which fits our observations. Only twice have they not continued to transmit when one of our team gets there in time, and in one of those cases it had been run over by a car.

Vandenberg Space Force Base (north of Los Angeles) often flies a burst of LMS6's at short intervals before rocket launches to check upper air winds. They seem programmed to stop transmitting shortly after burst, probably to clear the channel for the next one. That would make them difficult to recover should we ever go up there.

Too bad ours don't carry radar reflectors either. I've infected N6IZW with the sonde hunting bug, and he's the local 10 GHz (and general microwave) guru. If they had reflectors he'd probably be building a portable radar to get the ones on the ground after their timers have shut them off.

On 10/19/21 17:00, rs1729 wrote:

Beauvechain (Belgium) didn't use parachutes for quite some time. Depending on how much was left of the balloon, the descent could be slow, however the descent rate could suddenly increase if parts of the balloon left overs departed. Difficult to predict. Now they use parachutes and iMet-4, and often it runs out of battery before it lands...

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/projecthorus/sondehub-tracker/issues/114#issuecomment-947193991, or unsubscribe https://github.com/notifications/unsubscribe-auth/ADJDI45HJ6OUWJ4UPX6X563UHYBCNANCNFSM5CRQC22A. Triage notifications on the go with GitHub Mobile for iOS https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675 or Android https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub.

ka9q commented 2 years ago

Thanks, that's what I figured. But there still is the problem of variability depending on how much of the balloon is left, since there's no parachute or radar reflector.

On 10/19/21 14:40, Mark Jessop wrote:

The descent rate value we are after is the 'sea level' descent rate (descent rate on landing is a good enough estimate), which is what is used by the predictor. We certainly appreciate that the landing descent rate will vary a lot, so this is really just an estimate.

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/projecthorus/sondehub-tracker/issues/114#issuecomment-947127079, or unsubscribe https://github.com/notifications/unsubscribe-auth/ADJDI477GWRMD5QGYDHWPPDUHXQTVANCNFSM5CRQC22A. Triage notifications on the go with GitHub Mobile for iOS https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675 or Android https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub.

darksidelemm commented 2 years ago

Yes, it's not something we can predict in advance, so all we can do is pick a mean value. The live predictions (after descent) make use of the actual descent rate data, and should be fairly accurate. It's the descent rate used during ascent, and the forecast predictions which will be based off the mean descent rate value.

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/20/2021 12:32:24 Suggestion Type: Modify Existing Site Station ID: 70026 Station Name: Barrow, Wiley Post-Will Rogers Memorial Airport (United States) Station Coordinates: 71.2889,-156.7833 Station Altitude: 13

Sondes Launched: RS41 (41) Launch Times: Daily 00Z, Daily 06Z, Daily 12Z, Daily 18Z Ascent Rate: 5.5 Burst Altitude: 26000 Descent Rate: 10.3 Station Notes: Vaisala Autosonde system, no parachutes Further Information:

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/20/2021 13:02:43 Suggestion Type: Modify Existing Site Station ID: 72403 Station Name: Washington DC, Washington-Dulles International Airport (United States) Station Coordinates: 38.9767,-77.4858 Station Altitude: 95

Sondes Launched: LMS6-403 (11) Launch Times: Daily 00Z, Daily 12Z Ascent Rate: 5 Burst Altitude: 32098 Descent Rate: 5.4 Station Notes: Also launches other sonde models at various times, especially during the day on weekdays Further Information:

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/20/2021 13:05:32 Suggestion Type: Modify Existing Site Station ID: 72402 Station Name: Wallops Island, Wallops Flight Facility Airport (United States) Station Coordinates: 37.9333,-75.4833 Station Altitude: 12

Sondes Launched: LMS6-403 (11) Launch Times: Daily 00Z, Daily 12Z Ascent Rate: 5 Burst Altitude: 30562 Descent Rate: 5.9 Station Notes: Launches additional LMS-6 sondes to support rocket launch operations Further Information:

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/20/2021 13:08:39 Suggestion Type: Modify Existing Site Station ID: 70200 Station Name: Nome, Nome Airport (United States) Station Coordinates: 64.5072,-165.4347 Station Altitude: 11

Sondes Launched: RS41 (41) Launch Times: Daily 00Z, Daily 12Z Ascent Rate: 5.5 Burst Altitude: 26000 Descent Rate: 10.3 Station Notes: Vaisala Autosonde system without parachutes. Uses hydrogen as lift gas. Further Information:

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/20/2021 13:10:53 Suggestion Type: Modify Existing Site Station ID: 70133 Station Name: Kotzebue, Ralph Wien Memorial Airport (United States) Station Coordinates: 66.8864,-162.6133 Station Altitude: 3

Sondes Launched: RS41 (41) Launch Times: Daily 00Z, Daily 12Z Ascent Rate: 5.5 Burst Altitude: 26000 Descent Rate: 10.3 Station Notes: Vaisala Autosonde system without parachutes. Further Information:

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/20/2021 15:17:38 Suggestion Type: Modify Existing Site Station ID: 07255 Station Name: Bourges (France) Station Coordinates: 47.0627,2.4335 Station Altitude: 165

Sondes Launched: DFM-09 (17) Launch Times: Ascent Rate: 5 Burst Altitude: 20000 Descent Rate: 6 Station Notes: Further Information: Frequencies : 404.510, 404.610, 404.710, 404.810, 404.910, 405.010 MHz

rs1729 commented 2 years ago

@ka9q The RS41 has several timer and burst kill options. When the RS41 was new, the burst kill was the default setting, it switched off after approx 1000m falling after burst. The LMS6 at Vandenberg seems to have a similar option.

The iMet-4 however has just bad batteries I guess and no isolation, you can see how the voltage drops just before it turns off. Sometimes the signal starts dancing, similar to https://www.youtube.com/watch?v=rv9-sYW2Eo0 (this was the old iMet-1-AB, similar issues) If the burst is below 20km, chances are good that it survives, and in the warmer air on the ground the batteries last longer. Probably the batteries would last longer if the iMet-4 would not transmit the idle tone 3/4 of a second.

ka9q commented 2 years ago

Ah, that explains it all. It's really hard keeping electronics warm at those altitudes. The RS41's styrofoam case is good enough that the (lithium) batteries become quite hot if the unit is left running for an hour or two after landing, but the telemetry from our W6SUN reflight last week shows the interior temperature still gets quite cold. -30C or more, IIRC.

The stock RS41 decoder doesn't show the internal temperature but it does show battery voltage, and it drops quite low during flight. But after flight, even with several hours of additional operation, the voltage recovers to 3.0 or even 3.1 V. This shows the battery voltage is much more a function of temperature than state of charge.

On 10/20/21 00:54, rs1729 wrote:

@ka9q https://github.com/ka9q The RS41 has several timer and burst kill options. When the RS41 was new, the burst kill was the default setting, it switched off after approx 1000m falling after burst. The LMS6 at Vandenberg seems to have a similar option.

The iMet-4 however has just bad batteries I guess and no isolation, you can see how the voltage drops just before it turns off. Sometimes the signal starts dancing, similar to https://www.youtube.com/watch?v=rv9-sYW2Eo0 (this was the old iMet-1-AB, similar issues) If the burst is below 20km, chances are good that it survives, and in the warmer air on the ground the batteries last longer. Probably the batteries would last longer if the iMet-4 would not transmit the idle tone 3/4 of a second.

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/projecthorus/sondehub-tracker/issues/114#issuecomment-947418646, or unsubscribe https://github.com/notifications/unsubscribe-auth/ADJDI437BCQFANKORYP5VETUHZYUVANCNFSM5CRQC22A. Triage notifications on the go with GitHub Mobile for iOS https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675 or Android https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub.

rs1729 commented 2 years ago

@ka9q I'm afraid we are a bit off topic, however I don't remember right now, was never interested very much in voltage and internal temperature, the RS41 has no issues here. I think in the DFM decoder I have the STM32-temperature for DFM-09. So perhaps it is also in the RS41-data. https://github.com/einergehtnochrein/ra-firmware/tree/master/src/rs41 did some further analysis. I see the TX temperature, so if the Si4032 transmitter has it's own sensor, that would be a useful internal temperature.

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/22/2021 5:28:22 Suggestion Type: Modify Existing Site Station ID: 10618 Station Name: Idar-Oberstein (Germany) Station Coordinates: 49.6928,7.3264 Station Altitude: 376

Sondes Launched: RS41 (41), RS92 (13), DFM-09 (17), DFM-06 (18), DFM-17 (54), LMS6-1680 (82), LMS6-403 (11), M10 (77), M20 (63), iMet-54 (84), iMet-4 (34), iMet-1 (07), IMS100 (35), MRZ (19) Launch Times: Daily 00Z, Daily 06Z, Daily 12Z, Daily 18Z, Monday 00Z, Monday 12Z, Tuesday 00Z, Tuesday 12Z, Wednesday 00Z, Wednesday 12Z, Thursday 00Z, Thursday 12Z, Friday 00Z, Friday 12Z Ascent Rate: Burst Altitude: 33509 Descent Rate: 8.3 Station Notes: Further Information:

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/22/2021 8:26:43 Suggestion Type: Modify Existing Site Station ID: 06458 Station Name: Beauvechain (Belgium) Station Coordinates: 50.76143,4.79219 Station Altitude: 105

Sondes Launched: iMet-4 (34) Launch Times: Daily 00Z, Tuesday 12Z Ascent Rate: 4 Burst Altitude: 28000 Descent Rate: 4 Station Notes: Further Information:

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/22/2021 8:33:26 Suggestion Type: Modify Existing Site Station ID: 06260 Station Name: De Bilt (Netherlands) Station Coordinates: 52.09992,5.17705 Station Altitude: 2

Sondes Launched: Launch Times: Ascent Rate: 5 Burst Altitude: 32951 Descent Rate: 5 Station Notes: Ozone sonde launched Thursdays Further Information:

Timestorm commented 2 years ago

Honest question: Why do the "Launch schedule"s always seem to be 00:00/12:00 UTC and not the normal 11:00/23:00 UTC?

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/22/2021 18:37:06 Suggestion Type: New Launch Site Station ID: 00000 Station Name: Niinisalo (Finland) Station Coordinates: 61.855322, 22.463251 Station Altitude: 126

Sondes Launched: RS41 (41) Launch Times: Ascent Rate: Burst Altitude: 27250 Descent Rate: 9.8 Station Notes: Military shooting range, rough location estimate. Detected frequencies: 400.150 MHz, 401.000 MHz, 401.150 MHz, 402.000 MHz, 402.150 MHz, 403.000 MHz Further Information:

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/22/2021 18:40:18 Suggestion Type: New Launch Site Station ID: 00000 Station Name: Katajaluoto (Finland) Station Coordinates: 60.099674, 24.914343 Station Altitude: 7

Sondes Launched: RS41 (41) Launch Times: Ascent Rate: Burst Altitude: Descent Rate: Station Notes: Military station. Detected frequencies: 402.000 MHz, 403.000 MHz, 403.500 MHz, 404.000 MHz Further Information:

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/22/2021 18:43:11 Suggestion Type: New Launch Site Station ID: 00000 Station Name: Lohtaja (Finland) Station Coordinates: 64.055581, 23.386039 Station Altitude: 5

Sondes Launched: RS41 (41) Launch Times: Ascent Rate: Burst Altitude: Descent Rate: Station Notes: Military shooting range. Rough location estimate. Detected frequencies: 401.000 MHz, 403.000 MHz Further Information:

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/22/2021 18:47:32 Suggestion Type: New Launch Site Station ID: 00000 Station Name: Stera Oy (Finland) Station Coordinates: 60.825806, 23.720582 Station Altitude: 107

Sondes Launched: RS41 (41) Launch Times: Ascent Rate: Burst Altitude: Descent Rate: Station Notes: Stera assembles shipping containers for Vaisala and they test those containers every now and then. Rough location estimate. Factory is located in other place, this is launch site. Detected frequencies: 405.300 MHz Further Information:

ka9q commented 2 years ago

I think 0000Z and 1200Z are the nominal times, with launches occurring up to 1 hour beforehand so the sondes will be in the sky at those nominal times. At the usual ascent rates a sonde will be above the tropopause by then.

On 10/21/21 4:59 PM, Timestorm wrote:

Honest question: Why do the "Launch schedule"s always seem to be 00:00/12:00 UTC and not the normal 11:00/23:00 UTC?

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/projecthorus/sondehub-tracker/issues/114#issuecomment-949086528, or unsubscribe https://github.com/notifications/unsubscribe-auth/ADJDI47TUV2C6OHTL63RHTTUICSOTANCNFSM5CRQC22A. Triage notifications on the go with GitHub Mobile for iOS https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675 or Android https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub.

rs1729 commented 2 years ago

Station ID: 10618 Station Name: Idar-Oberstein (Germany)

Sondes Launched: RS41 (41), RS92 (13), DFM-09 (17), DFM-06 (18), DFM-17 (54), LMS6-1680 (82), LMS6-403 (11), M10 (77), M20 (63), iMet-54 (84), iMet-4 (34), iMet-1 (07), IMS100 (35), MRZ (19)

When did they launch all these radiosondes?

Honest question: Why do the "Launch schedule"s always seem to be 00:00/12:00 UTC and not the normal 11:00/23:00 UTC?

I think 0000Z and 1200Z are the nominal times, with launches occurring up to 1 hour beforehand so the sondes will be in the sky at those nominal times. At the usual ascent rates a sonde will be above the tropopause by then.

I think these are also called "synoptic hours".

Timestorm commented 2 years ago

I think 0000Z and 1200Z are the nominal times, with launches occurring up to 1 hour beforehand so the sondes will be in the sky at those nominal times. At the usual ascent rates a sonde will be above the tropopause by then. … On 10/21/21 4:59 PM, Timestorm wrote: Honest question: Why do the "Launch schedule"s always seem to be 00:00/12:00 UTC and not the normal 11:00/23:00 UTC?

How does this affect the predictions? While one hour change within a model should normally be minimal, in certain situations it could cause inaccuracy.

I also think it's disingenuous to call it "Launch Time" if it is not in fact the time a sonde is launched (maybe Observation Time is a better descriptor). Let's say I visit a location to chase a sonde and based my drive and setup time on the "Launch Time" only to find the Sonde has already been in flight for an hour. A good example is sites with non-standard times, they also have the 00:00/12:00 "Launch time". AMF2 Crested Butte and Sulphur Municipal (4 launches a day) are launched at the bottom of the hour.

For me, I know SondeHub Launch Schedules are inaccuate to physical launch times. But where I'm from in Colorado in the US, one hour is normally the difference of 60-120 miles down range from launch.

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/23/2021 2:32:52 Suggestion Type: New Launch Site Station ID: -1 Station Name: Marshall Field Site (United States) Station Coordinates: 39.948961,-105.197417 Station Altitude: 1743

Sondes Launched: RS41 (41), iMet-54 (84), iMet-4 (34), iMet-1 (07) Launch Times: Varies, Once Weekly Ascent Rate: 5 Burst Altitude: 33000 Descent Rate: 6 Station Notes: Weekly Ozonesonde launches and Monthly, NOAA chased, controlled descent Ozonesonde with POPS launches Further Information:

Timestorm commented 2 years ago

The National Weather Service will convert five Upper Air sites to Manual Radiosonde Observation System (MROS) 403 MHz operations in November 2021. Transition will occur on or about the MROS Start date indicated.

UPPER AIR SITE WMO ID STN ID MROS START MROS SONDE TYPE RENO, NV 72489 KREV 01 NOV 2021 GRAW DFM-17 TAMPA BAY, FL 72210 KTBW 15 NOV 2021 GRAW DFM-17 SPRINGFIELD, MO 72440 KSGF 15 NOV 2021 GRAW DFM-17 BUFFALO, NY 72528 KBUF 15 NOV 2021 VAISALA RS41-NG DODGE CITY, KS 72451 KDDC 29 NOV 2021 VAISALA RS41-NG

During the transition period of up to 30 days, dual radiosonde flights may be performed until the MROS is declared operational for the regularly scheduled observations of 00Z and 12Z.

Source

Upcoming changes to 5 US stations in relation to the current MROS (Manual Radiosonde Observation System) 400mhz transition OT&E (Operation, Test and Evaluation).

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/23/2021 14:09:31 Suggestion Type: Modify Existing Site Station ID: 71917 Station Name: Eureka, NU (Canada) Station Coordinates: 79.988889,-85.940833 Station Altitude: 10

Sondes Launched: DFM-09 (17) Launch Times: Daily 00Z, Daily 12Z Ascent Rate: Burst Altitude: Descent Rate: Station Notes: Further Information:

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/23/2021 18:59:12 Suggestion Type: Modify Existing Site Station ID: 72520 Station Name: Pittsburgh, Pittsburgh International Airport (United States) Station Coordinates: 40.5317,-80.2172 Station Altitude: 366

Sondes Launched: RS41 (41), RS92 (13), DFM-09 (17), DFM-06 (18), DFM-17 (54), LMS6-1680 (82), LMS6-403 (11), M10 (77), M20 (63), iMet-54 (84), iMet-4 (34), iMet-1 (07), IMS100 (35), MRZ (19) Launch Times: Daily 00Z, Daily 06Z, Daily 12Z, Daily 18Z, Monday 00Z, Monday 12Z, Tuesday 00Z, Tuesday 12Z, Wednesday 00Z, Wednesday 12Z, Thursday 00Z, Thursday 12Z, Friday 00Z, Friday 12Z Ascent Rate: Burst Altitude: Descent Rate: Station Notes: Further Information:

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/23/2021 19:21:36 Suggestion Type: Modify Existing Site Station ID: 72520 Station Name: Pittsburgh, Pittsburgh International Airport (United States) Station Coordinates: 40.5317,-80.2172 Station Altitude: 366

Sondes Launched: RS41 (41), RS92 (13), DFM-09 (17), DFM-06 (18), DFM-17 (54), LMS6-1680 (82), LMS6-403 (11), M10 (77), M20 (63), iMet-54 (84), iMet-4 (34), iMet-1 (07), IMS100 (35), MRZ (19), All and any Launch Times: Daily 00Z, Daily 06Z, Daily 12Z, Daily 18Z, Monday 00Z, Monday 12Z, Tuesday 00Z, Tuesday 12Z, Wednesday 00Z, Wednesday 12Z, Thursday 00Z, Thursday 12Z, Friday 00Z, Friday 12Z Ascent Rate: Burst Altitude: Descent Rate: Station Notes: Further Information:

Joanvoo commented 2 years ago

Suggestion Type: Modify Existing Site Station ID: 06458 Station Name: Beauvechain (Belgium) Station Coordinates: 50.76143,4.79219 Station Altitude: 105

Thanks for changing Luke it's now mutch better. Can you change the Coordinates ,the Altitude schould be 103. The coordinates are very accurate, I was there with a launch. :<)

LukePrior commented 2 years ago

Google Form Submission

Time Submitted: 10/25/2021 2:37:12 Suggestion Type: Modify Existing Site Station ID: 72456 Station Name: Topeka, Philip Billard Municipal Airport (United States) Station Coordinates: 39.0722,-95.6306 Station Altitude: 268

Sondes Launched: LMS6-403 (11) Launch Times: Daily 00Z, Daily 12Z Ascent Rate: 5 Burst Altitude: 32421 Descent Rate: 5 Station Notes: Further Information: