LS7_GM_NBART_3_-26_20010101.nc
dataset of product ls7_nbart_geomedian_annual
Indexed by dra547
,
created
Archived
for
1st January 2001
Fields 🔗
creation_time
2018-03-14 10:29:31 🔍
format
NetCDF 🔍
id
223a316e-1d3d-468d-986c-29d669221fc5 🔍
instrument
ETM
label
• 🔍
lat
-24.053 to -23.135 🔍
lon
134.959 to 135.975 🔍
platform
LANDSAT_7
product_type
surface_reflectance_statistical_summary
time
2001-01-01 00:00:00 to 2001-01-01 00:00:00 🔍
Location 🔗
Metadata Document 🔗
id:
223a316e-1d3d-468d-986c-29d669221fc5
product_type:
surface_reflectance_statistical_summary
creation_dt:
2018-03-14T10:29:31.112622
platform:
code:
LANDSAT_7
instrument:
name:
ETM
format:
name:
NetCDF
extent:
coord:
ll:
lat:
-24.05296886740828
lon:
134.98158233970992
lr:
lat:
-24.028652183921995
lon:
135.97488194925054
ul:
lat:
-23.15949630427679
lon:
134.95857063827393
ur:
lat:
-23.135340964238043
lon:
135.94421257083937
to_dt:
2001-01-01T00:00:00
from_dt:
2001-01-01T00:00:00
center_dt:
2001-01-01T00:00:00
grid_spatial:
projection:
valid_data:
type:
Polygon
coordinates:
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300000.0
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[
300000.0
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[
]
300000.0
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,
geo_ref_points:
ll:
x:
300000.0
y:
-2600000.0
lr:
x:
400000.0
y:
-2600000.0
ul:
x:
300000.0
y:
-2500000.0
ur:
x:
400000.0
y:
-2500000.0
spatial_reference:
EPSG:3577
image:
bands:
nir:
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:
[
]
masks:
[
]
flags:
cloud_acca:
no_cloud
contiguous:
True
cloud_fmask:
no_cloud
nir_saturated:
False
red_saturated:
False
blue_saturated:
False
green_saturated:
False
swir1_saturated:
False
swir2_saturated:
False
cloud_shadow_acca:
no_cloud_shadow
cloud_shadow_fmask:
no_cloud_shadow
product:
ls7_pq_albers
group_by:
solar_day
fuse_func:
datacube.helpers.ga_pq_fuser
measurement:
pixelquality
product:
ls7_nbart_albers
group_by:
solar_day
measurements:
[
blue
green
red
nir
swir1
swir2
]
source_filter:
product:
ls7_level1_scene
gqa_iterative_mean_xy:
[
0
1
]
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:
num_threads:
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 r3537 3.10.0-693.17.1.el6.x86_64 #1 SMP Fri Feb 9 03:25:58 UTC 2018 x86_64
hostname:
r3537
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