LS7_GM_NBART_-7_-25_20020101.nc
dataset of product ls7_nbart_geomedian_annual
Indexed by dra547
,
created
Archived
for
1st January 2002
Fields 🔗
creation_time
2018-03-14 13:25:20
format
NetCDF
id
66a9ade8-1723-4ada-a4ac-849dbebf1d34
instrument
ETM
label
•
lat
-23.066 to -22.128 🔍
lon
125.102 to 126.131 🔍
platform
LANDSAT_7
product_type
surface_reflectance_statistical_summary
time
2002-01-01 00:00:00 to 2002-01-01 00:00:00 🔍
Location 🔗
Metadata Document 🔗
id:
66a9ade8-1723-4ada-a4ac-849dbebf1d34
product_type:
surface_reflectance_statistical_summary
creation_dt:
2018-03-14T13:25:20.196508
platform:
code:
LANDSAT_7
instrument:
name:
ETM
format:
name:
NetCDF
extent:
coord:
ll:
lat:
-23.021522950097392
lon:
125.10214485600989
lr:
lat:
-23.066349112853313
lon:
126.08602865073796
ul:
lat:
-22.127854825116206
lon:
125.15489176272736
ur:
lat:
-22.172397488580238
lon:
126.13127497900916
to_dt:
2002-01-01T00:00:00
from_dt:
2002-01-01T00:00:00
center_dt:
2002-01-01T00:00:00
grid_spatial:
projection:
valid_data:
type:
Polygon
coordinates:
[
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spatial_reference:
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image:
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path:
layer:
nir
red:
path:
layer:
red
blue:
path:
layer:
blue
green:
path:
layer:
green
swir1:
path:
layer:
swir1
swir2:
path:
layer:
swir2
lineage:
algorithm:
name:
datacube-stats
version:
0.9a8
repo_url:
https://github.com/GeoscienceAustralia/agdc_statistics.git
parameters:
configuration_file:
sources:
[
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masks:
[
]
flags:
cloud_acca:
no_cloud
contiguous:
True
cloud_fmask:
no_cloud
nir_saturated:
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red_saturated:
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blue_saturated:
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green_saturated:
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swir1_saturated:
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swir2_saturated:
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cloud_shadow_acca:
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cloud_shadow_fmask:
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ls7_pq_albers
group_by:
solar_day
fuse_func:
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measurement:
pixelquality
product:
ls7_nbart_albers
group_by:
solar_day
measurements:
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blue
green
red
nir
swir1
swir2
]
source_filter:
product:
ls7_level1_scene
gqa_iterative_mean_xy:
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1
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storage:
crs:
EPSG:3577
driver:
NetCDF CF
chunking:
x:
200
y:
200
time:
1
tile_size:
x:
100000.0
y:
100000.0
resolution:
x:
25
y:
-25
dimension_order:
[
time
y
x
]
location:
/g/data/u46/users/ia1511/Work/data/geomedian/output
computation:
chunking:
x:
2000
y:
2000
date_ranges:
end_date:
2004-01-01
step_size:
1y
start_date:
2001-01-01
stats_duration:
1y
output_products:
[
]
name:
ls7_nbart_geomedian_annual
metadata:
platform:
LANDSAT-7
statistic:
new_geomedian
product_type:
surface_reflectance_statistical_summary
output_params:
zlib:
True
fletcher32:
True
statistic_args:
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3
file_path_template:
ls7_gm/ls7_gm_nbart_{x}_{y}_{epoch_start:%Y%m%d}.nc
global_attributes:
title:
Surface Reflectance Geometric Median
source:
geometric median v2017 of surface reflectance NBAR+T
license:
CC BY Attribution 4.0 International License
summary:
The surface reflectance geometric median (geomedian) is a pixel composite mosaic of a time series of earth observations. The value of a pixel in a geomedian image is the statistical median of all observations for that pixel from a period of time. For example the 2016 Landsat 8 geomedian image over an area will be the median of Landsat 8 pixels observed for that area in 2016.
The geometric median products are available as annual datasets for years since 1987. Each annual composite is created from one calendar year of surface reflectance and for one sensor, i.e. Thematic Mapper (Landsat 5), Enhanced Thematic Mapper (Landsat 7) or Operational Land Imager (Landsat 8).
The algorithm considers concurrent spectral measurements as a multi-dimensional set and outputs a multi-dimensional median that maintains the relationships among the measurements. This provides a median of the physical conditions measured by the earth observations used to create it, and provides a good representation of a typical pixel observation devoid of outliers.
More information on the algorithm can be found in the article below:
- Roberts, D., Mueller, N., & Mcintyre, A. (2017). High-Dimensional Pixel Composites From Earth Observation Time Series.
IEEE Transactions on Geoscience and Remote Sensing, 55(11), 6254-6264. https://doi.org/10.1109/tgrs.2017.2723896
keywords:
AU/GA,NASA/GSFC/SED/ESD/LANDSAT,REFLECTANCE,ETM+,TM,OLI,EARTH SCIENCE
platform:
LANDSAT-5,LANDSAT-7,LANDSAT-8
instrument:
TM,ETM+,OLI
references:
- Roberts, D., Mueller, N., & Mcintyre, A. (2017). High-Dimensional Pixel Composites From Earth Observation Time Series. IEEE Transactions on Geoscience and Remote Sensing, 55(11), 6254-6264. https://doi.org/10.1109/tgrs.2017.2723896
description:
Surface Reflectance Geometric Median 25 metre, 100km tile, Australian Albers Equal Area projection (EPSG:3577)
institution:
Commonwealth of Australia (Geoscience Australia)
cdm_data_type:
Grid
product_suite:
Surface Reflectance Geometric Median 25m
publisher_url:
http://www.ga.gov.au
acknowledgment:
- Landsat data is provided by the United States Geological Survey (USGS) through direct reception of the data at Geoscience Australias satellite reception facility or download.
publisher_name:
Section Leader, Operations Section, NEMO, Geoscience Australia
product_version:
2
publisher_email:
earth.observation@ga.gov.au
keywords_vocabulary:
GCMD
coverage_content_type:
modelResult
machine:
uname:
Linux r3558 3.10.0-693.17.1.el6.x86_64 #1 SMP Fri Feb 9 03:25:58 UTC 2018 x86_64
hostname:
r3558
software_versions:
python:
version:
3.6.3 | packaged by conda-forge | (default, Nov 4 2017, 10:10:56)
[GCC 4.8.2 20140120 (Red Hat 4.8.2-15)]
datacube:
version:
1.5.1+444.g249040b.dirty
repo_url:
https://github.com/opendatacube/datacube-core.git
source_datasets:
statistics:
step:
1y
period:
1y