Atmospheric columns
Total columns of selected trace gases, particularly NO₂ and O₃.
Remote sensing & reference observations
From spectra to a
global reference.
Pandora spectrometers connect ground-based long-term observations with air-quality monitoring and the validation of satellite trace-gas products.
A global reference network
Homogeneous records for satellites and air quality.
Long, well-maintained and homogeneously calibrated ground-based remote-sensing records have long provided an essential reference for satellite ozone columns. Comparable global networks for other satellite-derived trace gases such as NO₂ or HCHO were missing.
The Pandonia Global Network addresses this gap with fiducial reference measurements. Its main instruments are Pandora and Pandora-2S spectrometers observing direct-sun and sky spectra.
Measurement principle & products
What the network makes observable.
Calibration, standardised processing and shared quality control make measurements from different sites comparable.
Satellite validation
Ground-based reference values for spatially and temporally matched satellite overpasses.
Air-quality monitoring
Long-term records complement in-situ observations with the full atmospheric column.
Network quality
Harmonised calibration, processing, metadata and data dissemination.
PGN at the IAO
Urban–Alpine reference observations in Innsbruck.
The APC group collaborates with LuftBlick on calibration, operation and scientific development of the network. Innsbruck adds a demanding environment shaped by a city, valley circulations and mountain topography.
Current Pandora-2S products include total columns of NO₂ and O₃. The programme links remote sensing with urban air-quality research and long-term observatory operation.
Network partners
Shared standards, globally distributed observations.
The network connects international partners in calibration, operation, data processing and scientific use.
Explore data and the network.
Official information, station overviews and available data products are provided through the Pandonia Global Network.
Quality-labelled Level-2 trace-gas observations from the Innsbruck Atmospheric Observatory. Data-quality exceedance flags Uncertainty Fit RMS Acquisition settings
Pandonia Global Network
Innsbruck · Station 106
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Value scale––
How the heatmap value is calculatedOne cell represents one calendar day and one ten-minute window. Its value is the median of the quality-filtered measurements in that window. The backend setting currently includes high- and medium-grade measurements; unusable measurements are always excluded. With at least 20 cells, the colour scale spans the 2nd to 98th percentile so individual outliers do not dominate. Values outside that range use the end colours. Hover or click shows the individual measurement closest to the cell median.
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Quality & diagnosticsFlags, uncertainty, fit quality and acquisition parameters⌄
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