TheGrittersAreOut

Hi, Thanks very much. I'll see if Davis support can edit it - the PC software allowed you to edit incorrect entries - I don't think the Davis "Cloud" is an improvement. My Weatherlink Live is connected via a power cable. It was the station battery that ran out - completely coincidental with the other problems I was having. Mind you it has been raining here (Scottish Borders) for a week pretty much non-stop. Thanks, Mark

Hi, I have had a Vantage Vue station and console for a number of years connected to weatherlink.com via a WeatherlinkIP dongle. This has worked very well until recently when I've had problems with the WeatherlinkIP dongle. Although I managed to fix the problem after 2 weeks offline, by clearing the memory and resetting very carefully, I decided to move to a Weatherlink Live because it's better supported nowadays by Davis. This has all gone smoothly and I've retired my WeatherlinkIP and moved my Pro subscription to the Weatherlink Live. However, overnight the battery ran out on my station - it started giving warnings a couple of days ago. Unfortunately, the final two entries that were transmitted to the Weatherlink Live and then on to weatherlink.com were corrupt and contained a low temperature of -67.8C. While it's cold in Scotland where I live, it's not that cold I've spent all evening trying to work out how I can edit the incorrect data on weatherlink.com. I cannot work out how to do it. I've even tried re-importing an edited 2020 to weatherlink.com but this hasn't worked either. Does anyone have any idea if this is possible and if so how to do it? Many thanks, Mark

Hi John, I have just had a very similar problem with a Vantage Vue and WeatherlinkIP that has worked for years. Suddenly it stopped uploading and when I reset it, it went into a strange mode of resetting the clock on the console to about 45 minutes earlier than the real time and not advancing it. When I went into the admin page of the WeatherlinkIP and turned off "upload to weatherlink.com" it worked perfectly (I could still download to Weatherlink 6.05). After much experimentation and discussion with Davis Support they eventually got an engineer to look at the problem on their side. My problems started when they had a server crash. Although I had reset the WeatherlinkIP on numerous occasions the following worked for me: 1. Open the WeatherLink computer software and go to the setup menu. Select Set time and date. Make sure time and date in the entry box is correct and click Set. The software will ask if you want to clear archive memory, answer Yes to that. This will clear out the datalogger. 2. Unplug the console and take the batteries out. Make sure the WeatherlinkIP is properly seated. Plug back in and replace the batteries. Go through the setup procedure and make sure the time is set correctly. If you have disabled the upload to weatherlink.com on the WeatherlinkIP, re-enable it. Wait a while to see if uploads restart. You will lose some data unless you've managed to store it in the Weatherlink 6.0.5 software. This worked for me. Other attempts at a reset - including completely wiping the console memory did not work. The problem lay in memory corruption within the WeatherlinkIP device. Cheers, Mark

It is generally held in weather circles that the GFS is struggling at the moment for a variety of reasons. A key reason is that the US has invested heavily in supercomputing hardware but has neglected software development. At the same time NOAA's National Weather Service is very distributed with multiple separate organisations e.g. NCEP and its many centres. Focussing on hardware, a complex bureaucracy and (if you look at their website) not really talking about software is meaning the GFS is really struggling. It's definitely a number of years (perhaps 10?) behind the UM (Met Office) or IFS (ECMWF). I always think that the competition and collaboration between these two latter organisations keeps them on their toes ​!

I don't normally (ever ) post but over the past few years I've learned a huge amount about weather modelling from all of the experts on this forum - fascinating stuff. Following up to Nick's comment, what I've not seen mentioned is the major upgrade to the Unified Model that the UKMO rolled into production in the late summer. For many years the UM was what's called a 'spectral model'. These models are difficult to make scale well on today's supercomputers so about 12 years ago a dynamical core called the new dynamics was introduced. This in particular removed the need for fast fourier transforms to manage divergence in the solution around the poles. This dynamical core has always required a lot of artificial damping to reach a solution quickly enough. This summer they released a much upgraded version of this core called ENDGame - there's a discussion of it on the UKMO website. I know that a lot of work has been going on within the UKMO to make sure this core is performing well - perhaps some of the over amplification that Nick references above is one consequence of this change, Interestingly, the ECM is still a spectral model - and they are very proud of this. They believe their dynamics are more accurate as a result of their persistence with this type of numerical solver. Keep up the good work all! TheGrittersAreOut

Hi all, I don't ever post on here but this comment from OldMetMan caught my eye: I travel a lot with my job and last week I was in Moscow when all the snow fell. It started snowing on the Wednesday and then snowed (a very fine snow but continuous) for 2 days solid. While it's true this caused chaos on the St Petersburg to Moscow motorway the traffic in Moscow is always chaotic and actually seemed quieter than normal on the Thursday when the snow was well over 40cm throughout the city. They have 12,000 snow ploughs in Moscow so they keep the streets clean! But why is this useful for the Model Output Discussion - in talking to the Russians who were hosting our visit they said such snow was very common 15-20 years ago but since then Moscow has had little snow before Christmas. They viewed this year's weather as similar to 1990s and earlier. It's clear this winter's weather (as demonstrated by the models) is quite unusual. By Friday it started raining ice (it seemed to be water in the air but was ice by the time it hit the ground). Something I have rarely seen in the UK. On another note, two weeks ago I flew across the Atlantic and the jet stream was further south than I have ever seen it at this time of year (I go to the US in the same week of November every year). Cheers, TheGrittersAreOut P.S. Excellent, fascinating forum by the way