Satellite images (10x10 pixels) centered at Folsom, CA (lat=38.642N, lon=121.148W)

Satellite images centered on Folsom, CA (lat=38.642N, lon=121.148W).

This dataset includes images from GOES-15, which operated as GOES-West from 2011 until February 2019, when it was superseded by GOES-17.
The Earth-facing imager on GOES-15 has five spectral bands: one visible band centered at 0.63\(\mu m\) and four infrared bands centered at 3.9, 6.5, 10.7, and 13.3\(\mu m \), respectively.

This data includes measurements from the visible band (VIS), which has a spatial resolution of 1.0 km and a temporal resolution of one image every 30 minutes.

Each image of 10 pixels x 10 pixels is flattened into a vector \(\tilde{x}\). Each image is then normalized as

\(x_i = \frac{ \tilde{x}_i-\text{avg}(\tilde{x})}{\sqrt{ \text{var}(\tilde{x})+10}}\)

where \(\tilde{x}\) is the unprocessed 8 bit grayscale image vector, avg is the arithmetic mean value, and var is the variance.

Each line in the csv file corresponds to a single image.
The first column is the image timestamp in UTC.
The values that follow the timestamp correspond to 100 normalized gray-scale values obtained using the algorithm described above.