(Newsdesk) Success and joy during an expedition are so much dependent on weather conditions. This website by Web developer Cameron Beccario shows an animated map of global weather conditions; Air and Oceans Modes. Earth can be rotated and to some extent any point can be zoomed in.
The map is a visualization of global weather conditions forecast by supercomputers updated every three hours. Ocean surface current estimates are updated every five days. Ocean surface temperatures and anomaly from daily average (1981-2011) update daily. Anomaly shows how far the temperature is from the average for that day over a 30 year period.
Atmospheric pressure corresponds roughly to altitude; several pressure layers are meteorologically interesting. They show data assuming the earth is completely smooth, explains the site.
The wind animations can be at sea level or at various upper air levels.
Note: 1 hectopascal (hPa) ≡ 1 millibar (mb)
1000 hPa | ~100 m, near sea level conditions
850 hPa | ~1,500 m, planetary boundary, low
700 hPa | ~3,500 m, planetary boundary, high
500 hPa | ~5,000 m, vorticity
250 hPa | ~10,500 m, jet stream
70 hPa | ~17,500 m, stratosphere
10 hPa | ~26,500 m, even more stratosphere
The "Surface" layer represents conditions at ground or water level. This layer follows the contours of mountains, valleys, etc. Overlays show another dimension of data using color. Some overlays are valid at a specific height, while others are valid for the entire thickness of the atmosphere.
Ocean currents and land can be overlaid with temperatures, and more. Major rivers have been added to the wind map to serve as landmarks.
At the bottom of the animated map, click on the word “earth" and play around with the options.
Some data explanations:
Wind: wind speed at specified height
Temp: temperature at specified height
TPW (Total Precipitable Water): total amount of water in a column of air stretching from ground to space
TCW (Total Cloud Water): total amount of water in clouds in a column of air from ground to space
MSLP (Mean Sea Level Pressure): air pressure reduced to sea level
MI (Misery Index): perceived air temperature combined heat index and wind chill.
SST: Sea Surface Temperature
SSTA: Sea Surface Temperature Anomaly (SSTA)
Relative Humidity [%]
Air Density [kg/m3]
Wind Power Density [kW/m2]
#science #polar #mountaineering #air #animatedmap #earthweather #windspeed
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