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MODIS Services

  • ​True Color Images​
  • Air Quality PM10
  • Meteo Product
  • MODIS Daily Snow Cover
  • Fire Product



Here you can view the very latest MODIS image of the Alps and Northern Italy acquired by Eurac Research​. At an orbit of over 700 km above the Earth, the MODIS sensor on board NASA's Earth Observing System (EOS) Terra and Aqua satellites is capable of imaging the Earth at resolutions ranging from 250 m to 1 km in 36 spectral bands. The MODIS bands 4, 3, and 1 are displayed here as true-colour image.

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View the True Colour Images of the Last 10 Days
This work is licensed under a Creative Commons Attribution 4.0 International License

Please credit each image to "EURAC Receiving Station – Institute for Applied Remote Sensing, Bolzano, Italy" referring link to our web page http://eomount.eurac.edu.


​The PM10 (Particulate Matter) maps are based on MODIS Aerosol Optical Depth (AOD) data with a resolution of 10 km. The input data are the MOD04 products, the Boundary Layer Height (BLH) and the PM data from a set of ground stations. The processing steps include the estimation of the relationship between the PM, the AOD and the BLH for historical time series in each of the available stations. Then, a fitted function is used to estimate the PM concentration for the entire region of interest. The method, the validation and the error analysis are published in several papers.​

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The Meteo Product is a MODIS false colour composite, which highlights clouds and physical cloud properties.

It is primarily intended for local weather services for short-range weather forecasting. We are currently producing near-real time day and nighttime images over the Alps and South Tyrol for each MODIS acquisition. For the channel selection and image enh​ancement, we follow the EUMETSAT guidelines for meteorological RGB image generations and select channels 6,2,1 during daytime and channel 20,31,32 during nighttime. Compared with commonly used AVHRR data, the MODIS RGB images have four times higher ground resolution of 250 m during the daytime. This allows a more accurate visual recognition of fog and clouds in narrow Alpine Valleys and facilitates the visual distinction of snow and clouds.

The nighttime MODIS product has a 1 km ground resolution. ​

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The snow cover map based on MODIS data has a resolution of 250 m. The input data are the atmospherically-corrected reflectances of MODIS MOD09GQ, MOD09GA and the MODIS level 1 product MOD021KM. The processing steps include converting the map projection (Sinusoidal to UTM WGS 84) and a topographic correction based on a digital elevation model (DEM). Then snow and clouds are classified using a decision-tree algorithm. Snow under the forest canopy is detected by comparing the Normalized Difference Vegetation Index (NDVI) of a winter image and a reference image from summer season. To enhance the cloud classification a cloud cover derived from MODIS level 1 product, MOD021KM is also included.​

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​Based on the standard MODIS product MOD/MYD14, Eurac Research is producing night fire alerts in the geographical projection ERTS89 (Lambert_Azimuthal_Equal_Area).
Here a brief description of the MOD/MYD14 product: MODIS Thermal Anomalies/Fire products are primarily derived from MODIS 4- and 11-micrometer radiances. The fire detection strategy is based on absolute detection of a fire (when the fire strength is sufficient to detect), and on detection relative to its background (to account for variability of the surface temperature and reflection by sunlight). Numerous tests are employed to reject typical false alarm sources like sun glint or an unmasked coastline.
MOD14 is level-2 swath data provided daily at 1 km resolution. The Science Data Sets of this product include fire-mask, algorithm quality, radiative power, and numerous layers describing fire pixel attributes.
The Terra MODIS instrument acquires data twice daily (10:30 AM and PM), as does the Aqua MODIS (1:30 AM and PM). These four daily MODIS fire observations serve to advance global monitoring of the fire process and its effects on ecosystems, the atmosphere and climate.

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Tel. +39 0471 055 930
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Viale Druso, 1 / Drususallee 1
39100 Bolzano / Bozen - Italy
How to reach us​
Tel: +39 0471 055 055
Fax: +39 0471 055 099
Email: info@eurac.edu
Partita IVA: 01659400210
Host of the Alpine Convention