Monitors:

• front page
• opacity monitor
• atmos. win. monitor

Current Sky:

• PWV = 0.98 mm
• tau₀²²⁰ = 0.044
• tau₀²⁷⁰ = 0.064
• tau₀³⁴⁵ = 0.158
• tau₀⁴⁹² = 1.068
• tau₀⁸⁰⁹ = 1.476

Links:

• ASTE Weather Monitor
• ASTE Weather Forecast
• MIR Cloud Monitor
• MiSTI Wiki
• APEX Weather Monitor

Contact:

• Yoichi Tamura
• last update: 27 Mar 14

Opacity Monitor (2015/12/19 13:00-14:00 UTC)

• top-left: 183GHz opacity distribution in a fish-eye-lens-like view. A circle with solid line indicates a sky line (EL=0), and each circle with dotted line indicates elevation angle of 20, 40, 60, and 80 degrees. The north is top, and the east is right.
• top-right: 183GHz opacity fluctuation distribution, which is calculated by subtracting a plane-parallel slab tau₀ sec Z (Z is a zenith angle) from the opacity distribution, and dividing it by the zenith opacity tau₀. The derivation process of the maps is shown here.
• bottom-left: Time variance of the 183 GHz zenith opacity.
• bottom-right: Time variance of the 183 GHz opacity fluctuation, which is an r.m.s. of the fluctuation map devided by zenith opacity.