How to get URL download in Google Earth Engine?

Question

In the below code I want to download PM image using getDownloadURL instead of Export.image.toDrive() but returns error. How can I solve this problem?

code link: https://code.earthengine.google.com/2ecd8a1ea1788def648f378eb0f7b6b7

var pm = ee.ImageCollection("ECMWF/CAMS/NRT")
.filterDate('2016-01-01','2021-01-01')
.filterBounds(table)
.select('particulate_matter_d_less_than_25_um_surface')
.mean().clip(table);

print(pm)

var pmDownload = pm.getDownloadURL({
    'image': pm,
    'region': table,
    'filePerBand': 'false',
    'crs': 'EPSG:4326'
});

Answer 1

Tables are imported as feature but region argument for getDownloadURL() needs a geometry. So replace that line with

    'region': table.geometry(),

Link to corrected code.

Side note: getDownloadURL() can be used for obtaining small images only. For large images (such as the whole district or state), please use Export.image.toDrive().