Authors:
Josef Kellndorfer, Earth Big Data LLC
Oliver Cartus, Gamma Remote Sensing AG
Date: 2021-09-08
This document describes the organization of and access to the data set Global Seasonal Interferometric Coherence and Backscatter from one year of Sentinel-1 C-band SAR data.
Availability: The data set is available via the AWS registry of open data residing in the AWS S3 Storage bucket sentinel-1-global-coherence-earthbigdata
.
Data Organization
Data Types and Scaling Conventions
File Naming Conventions
Example listing of GeoTIFFs inside a tile
Output of gdalinfo of a sample file inside a tile
Global down-scaled mosaics at 0.01 degree resolution
Output of gdalinfo of a sample global mosaic
Global full-resolution mosaics as GDAL VRTs
Output of gdalinfo of a sample global VRT
AWS command line tool (awscli)
HTTP URL access
This data set is the first-of-its-kind spatial representation of multi-seasonal, global SAR repeat-pass interferometric coherence and backscatter signatures. Global coverage comprises all land masses and ice sheets from 82 degrees northern to 78 degress southern latitude. The data set is derived from high-resolution multi-temporal repeat-pass interferometric processing of about 205,000 Sentinel-1 Single-Look-Complex (SLC) data acquired in Interferometric Wide-Swath mode (Sentinel-1 IW mode) from 1-Dec-2019 to 30-Nov-2020.
The data set was developed by Earth Big Data LLC and Gamma Remote Sensing AG, under contract for NASA's Jet Propulsion Laboratory.
The data set covers seasonal (DJF/MAM/JJA/SON) metrics of:
Local incidence and layover/shadow regions for all relative Sentinel-1A and Sentinel-1B orbits
Note that in the data set filenames seasons were referred to as northern hemisphere winter (DJF), spring (MAM), summer (JJA), and fall (SON).
Data on the bucket are organized in tiles
(full-resolution data set) and mosaics
(pre-compiled global GeoTIFFs at reduced pixel spacing):
s3://sentinel-1-global-coherence-earthbigdata/data/
|- tiles/
|- mosaics/
Tile tiles directory also contains global and North-America gdal VRT mosaics. These were input to generate the down-scaled global mosaic geotiffs in the mosaic directory.
Tiles in the data set are labeled by the upper left coordinate of each 1x1 degree tile:
e.g.:
N48W090 covers the area of 47 to 48 degrees northern latitude, and 90 to 89 degrees western longitude (-90 to -89)
S01E012 covers the area of 2 to 1 degrees southern latitude (-2 to -1), and 12 to 13 degress eastern longitude
In each tile the following metrics (based on available polarization covering a tile) in form of a GeoTIFF file are available:
winter_vv_AMP winter_hh_AMP
winter_vh_AMP winter_hv_AMP
winter_vv_COH06 winter_hh_COH06
winter_vv_COH12 winter_hh_COH12
winter_vv_COH18 winter_hh_COH18
winter_vv_COH24 winter_hh_COH24
winter_vv_COH36 winter_hh_COH36
winter_vv_COH48 winter_hh_COH48
winter_vv_rho winter_hh_rho
winter_vv_rmse winter_hh_rmse
winter_vv_tau winter_hh_tau
spring_vv_AMP spring_hh_AMP
spring_vh_AMP spring_hv_AMP
spring_vv_COH06 spring_hh_COH06
spring_vv_COH12 spring_hh_COH12
spring_vv_COH18 spring_hh_COH18
spring_vv_COH24 spring_hh_COH24
spring_vv_COH36 spring_hh_COH36
spring_vv_COH48 spring_hh_COH48
spring_vv_rho spring_hh_rho
spring_vv_rmse spring_hh_rmse
spring_vv_tau spring_hh_tau
summer_vv_AMP summer_hh_AMP
summer_vh_AMP summer_hv_AMP
summer_vv_COH06 summer_hh_COH06
summer_vv_COH12 summer_hh_COH12
summer_vv_COH18 summer_hh_COH18
summer_vv_COH24 summer_hh_COH24
summer_vv_COH36 summer_hh_COH36
summer_vv_COH48 summer_hh_COH48
summer_vv_rho summer_hh_rho
summer_vv_rmse summer_hh_rmse
summer_vv_tau summer_hh_tau
fall_vv_AMP fall_hh_AMP
fall_vh_AMP fall_hv_AMP
fall_vv_COH06 fall_hh_COH06
fall_vv_COH12 fall_hh_COH12
fall_vv_COH18 fall_hh_COH18
fall_vv_COH24 fall_hh_COH24
fall_vv_COH36 fall_hh_COH36
fall_vv_COH48 fall_hh_COH48
fall_vv_rho fall_hh_rho
fall_vv_rmse fall_hh_rmse
fall_vv_tau fall_hh_tau
Digital Numbers (DN) in the respective GeoTIFF files are scaled as follows:
Backscatter amplitudes (AMP.tif files):
Coherence (COH06,...,COH48.tif files):
rho, tau, rmse (rho.tif,tau.tif,rmse.tif files):
Incidence angle $\phi$ (inc.tif files)
Layover/Shadow (lsmap.tif files)
Values coded as follows:
The default values use 0 for "not tested", 1 for "tested", 4 for "layover", 16 for "shadow", and 20 for "layover-in-shadow". The values are logically mixed together (using the bitwise "or" operator): e.g., a pixel that was "tested" and detected as "layover" will have a value equal to 1 or 4 = 5.
Value | Effect | Description |
---|---|---|
0 | NOT_TESTED | No effect |
1 | TESTED | Neither layover nor shadow |
5 | LAYOVER | Pixel were slope angle is greater than look angle |
16 | SHADOW | Pixel in area affected by shadow |
21 | LAYOVER IN SHADOW | Layover detected in shadow areas |
The full resolution (3 arcsec pixel spacing) data set is organized in 1x1 degree geographic tiles. Each tile directory contains the available metrics in that tile for multi-temporal interferometric coherence, backscatter, and ancillary local incidence angle (inc) and layover/shadow (lsmap) regions.
Except for incidence angle and layover/shadow files, the naming convention is
TILEID_SEASON_POLARIZATION_METRIC.tif
with
TILEID Identifier of tile referenced to upper left tile corner
SEASON winter, spring, summer, or fall (referring to Northern hemisphere seasons)
POLARIZATION vv, vh, hh, or hv
METRIC AMP, COHxx, rho, tau, or rmse
Note that for inc and lsmap files the respective relative orbit and satellite flight direction are included in the name:
Example: N42W090_092A_inc.tif
092A means Ascending (A) flightdirection, 092 means relative orbit 92.
The letter D would indicate descending flight direction.
Tile: N42W090 sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_092A_inc.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_092A_lsmap.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_fall_vh_AMP.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_fall_vv_AMP.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_fall_vv_COH12.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_fall_vv_COH24.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_fall_vv_COH36.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_fall_vv_COH48.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_fall_vv_rho.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_fall_vv_rmse.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_fall_vv_tau.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_spring_vh_AMP.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_spring_vv_AMP.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_spring_vv_COH12.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_spring_vv_COH24.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_spring_vv_COH36.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_spring_vv_COH48.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_spring_vv_rho.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_spring_vv_rmse.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_spring_vv_tau.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_summer_vh_AMP.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_summer_vv_AMP.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_summer_vv_COH12.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_summer_vv_COH24.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_summer_vv_COH36.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_summer_vv_COH48.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_summer_vv_rho.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_summer_vv_rmse.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_summer_vv_tau.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_winter_vh_AMP.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_winter_vv_AMP.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_winter_vv_COH12.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_winter_vv_COH24.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_winter_vv_COH36.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_winter_vv_COH48.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_winter_vv_rho.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_winter_vv_rmse.tif sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_winter_vv_tau.tif
Example file sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_fall_vv_AMP.tif Driver: GTiff/GeoTIFF Files: /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_fall_vv_AMP.tif Size is 1200, 1200 Coordinate System is: GEOGCRS["WGS 84", DATUM["World Geodetic System 1984", ELLIPSOID["WGS 84",6378137,298.257223563, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,2], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4326]] Data axis to CRS axis mapping: 2,1 Origin = (-90.000000000000000,42.000000000000000) Pixel Size = (0.000833333330000,-0.000833333330000) Metadata: AREA_OR_POINT=Area Image Structure Metadata: COMPRESSION=LZW INTERLEAVE=BAND Corner Coordinates: Upper Left ( -90.0000000, 42.0000000) ( 90d 0' 0.00"W, 42d 0' 0.00"N) Lower Left ( -90.0000000, 41.0000000) ( 90d 0' 0.00"W, 41d 0' 0.00"N) Upper Right ( -89.0000000, 42.0000000) ( 89d 0' 0.00"W, 42d 0' 0.00"N) Lower Right ( -89.0000000, 41.0000000) ( 89d 0' 0.00"W, 41d 0' 0.00"N) Center ( -89.5000000, 41.5000000) ( 89d30' 0.00"W, 41d30' 0.00"N) Band 1 Block=1200x3 Type=UInt16, ColorInterp=Gray NoData Value=0
We provide down-scaled global mosaics at 0.01 degree pixel spacing from spatial averaging the full-resolution mosaics.
Below is a list of all global mosaics available in the sentinel-1-global-coherence-earthbigdata/data/mosaics/
directory:
sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_hh_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_hh_COH06_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_hh_COH12_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_hh_COH18_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_hh_COH24_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_hh_COH36_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_hh_COH48_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_hh_rho_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_hh_rmse_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_hh_tau_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_hv_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_vh_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_vv_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_vv_COH06_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_vv_COH12_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_vv_COH18_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_vv_COH24_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_vv_COH36_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_vv_COH48_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_vv_rho_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_vv_rmse_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_fall_vv_tau_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_hh_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_hh_COH06_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_hh_COH12_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_hh_COH18_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_hh_COH24_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_hh_COH36_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_hh_COH48_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_hh_rho_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_hh_rmse_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_hh_tau_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_hv_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_vh_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_vv_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_vv_COH06_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_vv_COH12_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_vv_COH18_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_vv_COH24_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_vv_COH36_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_vv_COH48_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_vv_rho_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_vv_rmse_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_spring_vv_tau_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_hh_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_hh_COH06_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_hh_COH12_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_hh_COH18_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_hh_COH24_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_hh_COH36_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_hh_COH48_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_hh_rho_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_hh_rmse_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_hh_tau_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_hv_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_vh_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_vv_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_vv_COH06_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_vv_COH12_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_vv_COH18_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_vv_COH24_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_vv_COH36_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_vv_COH48_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_vv_rho_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_vv_rmse_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_summer_vv_tau_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_hh_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_hh_COH06_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_hh_COH12_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_hh_COH18_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_hh_COH24_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_hh_COH36_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_hh_COH48_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_hh_rho_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_hh_rmse_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_hh_tau_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_hv_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_vh_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_vv_AMP_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_vv_COH06_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_vv_COH12_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_vv_COH18_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_vv_COH24_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_vv_COH36_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_vv_COH48_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_vv_rho_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_vv_rmse_100ppd.tif sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_vv_tau_100ppd.tif
gdalinfo
of a sample global mosaic¶Note that overviews are embedded and data are tiled into 256x256 blocks in these cloud optimized GeoTIFFs.
Filename: sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_vv_COH12_100ppd.tif Driver: GTiff/GeoTIFF Files: /vsis3/sentinel-1-global-coherence-earthbigdata/data/mosaics/Global_winter_vv_COH12_100ppd.tif Size is 36000, 13900 Coordinate System is: GEOGCRS["WGS 84", DATUM["World Geodetic System 1984", ELLIPSOID["WGS 84",6378137,298.257223563, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,2], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4326]] Data axis to CRS axis mapping: 2,1 Origin = (-180.000000000000000,81.000000000000000) Pixel Size = (0.010000000000000,-0.010000000000000) Metadata: AREA_OR_POINT=Area TIFFTAG_DATETIME=2021-04-30T01:16:17 TIFFTAG_SOFTWARE="Produced by Earth Big Data LLC and Gamma Remote Sensing Software" Image Structure Metadata: COMPRESSION=LZW INTERLEAVE=BAND Corner Coordinates: Upper Left (-180.0000000, 81.0000000) (180d 0' 0.00"W, 81d 0' 0.00"N) Lower Left (-180.0000000, -58.0000000) (180d 0' 0.00"W, 58d 0' 0.00"S) Upper Right ( 180.0000000, 81.0000000) (180d 0' 0.00"E, 81d 0' 0.00"N) Lower Right ( 180.0000000, -58.0000000) (180d 0' 0.00"E, 58d 0' 0.00"S) Center ( 0.0000000, 11.5000000) ( 0d 0' 0.01"E, 11d30' 0.00"N) Band 1 Block=256x256 Type=Byte, ColorInterp=Gray NoData Value=0 Overviews: 12000x4634, 4000x1545, 1334x515, 445x172
We are providing VRT files and associated overviews for global mosaics based on the full resolution tiles. Working with these VRTs is at global scale is rather compute intensive and we recommend using our tools like Jupyter notebooks to work with regional subsets.
A listing of all available global VRTs at full resolution (located in the data/tiles/ directory) is below.
Note that VRTs with double underscores ('__'
) are representing VRTs of VRTs.
E.g.
Global__hh_AMP.vrt A VRT of all Global hh_AMP.vrt files for the four seasons winter,spring,summer,fall.
Global__hh_COH.vrt A VRT of all Global hh_COHxx.vrt files with xx in 06,12,18,24,36,48 days repeat
Global__hh_COHno06.vrt A VRT of all Global hh_COHxx.vrt files with xx in 12,24,36,48 days repeat (No 6 day intervals)
sentinel-1-global-coherence-earthbigdata/data/tiles/Global__hh_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global__hh_COH.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global__hh_COHno06.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global__hh_rho.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global__hh_rmse.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global__hh_tau.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global__hv_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global__vh_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global__vv_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global__vv_COH.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global__vv_COHno06.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global__vv_rho.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global__vv_rmse.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global__vv_tau.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_hh_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_hh_COH06.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_hh_COH12.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_hh_COH18.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_hh_COH24.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_hh_COH36.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_hh_COH48.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_hh_rho.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_hh_rmse.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_hh_tau.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_hv_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vh_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_COH06.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_COH12.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_COH18.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_COH24.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_COH36.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_COH48.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_rho.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_rmse.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_tau.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_hh_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_hh_COH06.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_hh_COH12.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_hh_COH18.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_hh_COH24.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_hh_COH36.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_hh_COH48.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_hh_rho.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_hh_rmse.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_hh_tau.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_hv_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vh_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_COH06.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_COH12.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_COH18.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_COH24.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_COH36.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_COH48.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_rho.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_rmse.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_tau.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_hh_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_hh_COH06.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_hh_COH12.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_hh_COH18.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_hh_COH24.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_hh_COH36.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_hh_COH48.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_hh_rho.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_hh_rmse.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_hh_tau.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_hv_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vh_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_COH06.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_COH12.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_COH18.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_COH24.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_COH36.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_COH48.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_rho.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_rmse.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_tau.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_hh_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_hh_COH06.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_hh_COH12.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_hh_COH18.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_hh_COH24.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_hh_COH36.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_hh_COH48.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_hh_rho.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_hh_rmse.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_hh_tau.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_hv_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vh_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_AMP.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_COH06.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_COH12.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_COH18.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_COH24.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_COH36.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_COH48.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_rho.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_rmse.vrt sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_tau.vrt
gdalinfo
of a sample global VRT¶Note that overviews are external files in the global mosaic VRT Files.
Example Global__vv_COH.vrt.
The size of this VRT is 432000 x 166800 pixels by lines!
Driver: VRT/Virtual Raster Files: /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global__vv_COH.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_COH06.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_COH12.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_COH18.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_COH24.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_COH36.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_winter_vv_COH48.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_COH06.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_COH12.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_COH18.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_COH24.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_COH36.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_spring_vv_COH48.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_COH06.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_COH12.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_COH18.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_COH24.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_COH36.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_summer_vv_COH48.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_COH06.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_COH12.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_COH18.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_COH24.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_COH36.vrt /vsis3/sentinel-1-global-coherence-earthbigdata/data/tiles/Global_fall_vv_COH48.vrt Size is 432000, 166800 Coordinate System is: GEOGCRS["WGS 84", DATUM["World Geodetic System 1984", ELLIPSOID["WGS 84",6378137,298.257223563, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,2], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4326]] Data axis to CRS axis mapping: 2,1 Origin = (-180.000000000000000,81.000000000000000) Pixel Size = (0.000833333330000,-0.000833333330000) Corner Coordinates: Upper Left (-180.0000000, 81.0000000) (180d 0' 0.00"W, 81d 0' 0.00"N) Lower Left (-180.0000000, -57.9999994) (180d 0' 0.00"W, 58d 0' 0.00"S) Upper Right ( 179.9999986, 81.0000000) (179d59'59.99"E, 81d 0' 0.00"N) Lower Right ( 179.9999986, -57.9999994) (179d59'59.99"E, 58d 0' 0.00"S) Center ( -0.0000007, 11.5000003) ( 0d 0' 0.00"W, 11d30' 0.00"N) Band 1 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 2 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 3 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 4 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 5 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 6 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 7 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 8 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 9 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 10 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 11 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 12 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 13 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 14 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 15 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 16 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 17 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 18 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 19 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 20 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 21 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 22 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 23 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060 Band 24 Block=128x128 Type=Byte, ColorInterp=Undefined NoData Value=0 Overviews: 144000x55600, 48000x18534, 16000x6179, 5333x2060
Using the AWSCLI tool, individual tiles can be listed and retrieved as follows:
aws s3 ls s3://sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/
aws s3 ls s3://sentinel-1-global-coherence-earthbigdata/data/mosacis/
aws s3 ls s3://sentinel-1-global-coherence-earthbigdata/data/tiles/Global
aws s3 sync s3://sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/ <your-local-directory>
aws s3 cp s3://sentinel-1-global-coherence-earthbigdata/data/tiles/N42W090/N42W090_fall_vv_COH12.tif <your-local-filename>
Each file is available via its https url link
with the https prefix:
https://sentinel-1-global-coherence-earthbigdata.s3.us-west-2.amazonaws.com/
followed by data/mosaics/...
or data/tiles/...
Thus, common tools like curl
or wget
can be used to download data via their https URL.
The use of these data fall under the terms and conditions of the Creative Commons Attribution 4.0 International Public License
Contains modified Copernicus Sentinel data.
Any use of this data set in publications or sharing should use this citation:
"Global Seasonal Data Set of Interferometric Coherence and Backscatter from one Year of Sentinel-1 C-band SAR Data". Josef Kellndorfer, Oliver Cartus, Marco Lavalle, Christophe Magnard, Shadi Oveisgharan, Batu Osmanoglu, Paul Rosen, Urs Wegmüller. doi: In Review.