I'm using Google Earth Engine (GEE) with Python API.
I have this polygon:
{"type":"FeatureCollection","features":[{"type":"Feature","properties":{},"geometry":{"type":"Polygon","coordinates":[[[35.470985770225525,32.86172261307505],[35.470733642578125,32.86186680551963],[35.46989679336548,32.86167304686806],[35.469011664390564,32.861911865610494],[35.468518137931824,32.86207858774762],[35.468480587005615,32.858532295271665],[35.470706820487976,32.858446677817426],[35.470985770225525,32.86172261307505]]]}}]}
I downloaded (using ee.batch.Export.image.toDrive
) two Sentinel-1 images clipped to the geometry of the polygon:
- COPERNICUS/S1_GRD/S1A_IW_GRDH_1SDV_20211217T033539_20211217T033604_041043_04E032_1544
- COPERNICUS/S1_GRD/S1A_IW_GRDH_1SDV_20211222T034407_20211222T034432_041116_04E297_CE51
When downloading images this way, GEE saves them as GeoTIFF in local UTM CRS. However, for the first image, the CRS is EPSG:32637
and for the second image, the CRS is EPSG:32636
(which is the correct one).
I wonder why this happens, is it a bug/error maybe?
- I know I can specify the CRS in
ee.batch.Export.image.toDrive
function, but let's assume I have many polygons and I don't know the CRS of each one.