DML/EL RINGS Meteograms
AMPS model output, not a forecast. For flight decisions, use the official forecast.
Site map sites, elevation and distance to the sea
coast and ice front · grounding line (Bedmap3) · squares: Syowa and Molodezhnaya · + AMPS grid nodes, ring = the node each chart uses. MODIS mosaic, about 1500 × 640 km; sea at the top. E4 is 22 km inland of 57°E; W1 is on an ice shelf.
| Site | Elevation | To the sea |
|---|
Select all and copy, then paste into a spreadsheet. Saving files is not offered in this view; open the page signed in to claude.ai for download buttons.
Field notes are written automatically from AMPS, using rules from the Antarctic Weather Forecasting Handbook (2004) for each site's nearest station. How they are written ↗
Field weather notes
the meteogram in words
Day by day wind, snow, cloud, temperature, pressure for each day
AMPS against the station reports
Temperature
Red: 2 m air temperature, daily highs and lows. Blue dashes: wind chill. Symbols every 6 h: clear, cloud or snow.
Cloud and snow
Grey: likely cloud by altitude (air saturated over ice; right scale). Orange ticks: cloud base. Blue bars: snow, mm of water per 3 h (about 1 cm of fresh snow per mm).
Wind aloft
850, 700 and 500 hPa every 6 h: arrow for direction, number for knots. Heights are the model’s.
Wind
10 m wind in m/s (left) and knots (right). Arrows show where it blows to; letters, where it comes from. Dashed: strong (10 m/s) and gale (15 m/s). AMPS has no gusts.
Field weather notes
Amber: drifting snow (20 kt; 14 kt on fresh snow), snow of 0.5 mm or more, thick low cloud, or a fast pressure fall. Red: blowing snow (35 kt) or whiteout risk. “Handbook” lines come from the site’s nearest station section. “Last run”: a hazard in two runs in a row is more reliable.
AMPS against the station reports
AMPS at Syowa compared with the Syowa reports (Molodezhnaya shown too). A steady bias tells you how to read the charts, e.g. nights 2 °C too cold.
Pressure
Sea-level pressure. Red: a fall of 4 hPa or more in 12 h, often the first sign of a storm.
How this page works where the numbers come from
1. The model: AMPS
NCAR’s weather model tuned for Antarctica: 8 km grid, twice a day, 5 days ahead.
runs at 00 and 12 UTC, online about 10 h later2. An automatic job collects it
A GitHub job checks every 30 minutes while a run is due and downloads only the values at the grid points nearest the seven sites (a few hundred kB).
09:00–12:00 and 21:00–00:30 UTC3. Charts and field notes
It draws the charts and writes the notes by fixed handbook rules, comparing each day with the previous run. Every rule and its source ↗
4. A check against real weather
It compares AMPS with the Syowa and Molodezhnaya station reports (via Ogimet).
5. This page
The last 8 runs (4 days). Each site also links to meteoblue for a second opinion.