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Frequently Asked Questions
What do you need to download a satellite image?
Conabio offers satellite images at no cost whatsoever. You only have to register in the visitors΄ book. The link for the visitors΄ book is in the left-side green margin.
In what software program can images be opened?
Files obtained by FTP are binary files and can be imported into satellite-image processing systems or by Geographic Information System software. Among those are:
Due to the fact files correspond to a satellite image, they cannot be opened by design programs such as:
Microsoft Photo Editor
Imaging for Windows
What images can I get?
Conabio offers the public only satellite images from AVHRR and MODIS sensors over the past 30 days. Therefore, the oldest file date will be replaced by most recent file date. Therefore, images from earlier dates are not available.
What is a satellite image?
It is a pictorial representation measuring the electromagnetic energy recorded by a sensor, not by photography. A photograph is normally taken within a certain spectral range (visible light). Satellites take images outside this limited range.
What is an AVHRR satellite image?
These images are recorded by an Advanced Very High Resolution Radiometer sensor found on-board NOAA satellites. At present, the NOAA12, NOAA15, NOAA16 and NOAA17 satellites are active.
Spatial resolution: 1.1 km
Temporal resolution: Daily (12-13:00). Generally, two passes are required to cover Mexico. Therefore, a mosaic is made showing a single image of the entire country.
What is a MODIS satellite image?
These images are recorded by a Moderate Resolution Imaging Spectroradiometer sensor on-board Terra-1 and Aqua-1 satellites.
Spatial resolution: An image has three resolutions, two 250-meter channels, five 500-meter channels, and the rest 1000 meters.
The sensor had problems in channels 13 and 14, so that the they are not included in the image.
Temporal resolution: In order to cover all of Mexico, three satellite passes are needed. We can see, therefore, that the entire country is not covered in a single image.
For doubts, questions or comments