LS7_GM_NBART_1_-18_20180101.nc
dataset of product ls7_nbart_geomedian_annual
Indexed by sao547
,
created
Archived
for
1st January 2018
Fields 🔗
creation_time
2019-06-13 15:19:33 🔍
format
NetCDF 🔍
id
31c2709d-c54f-4451-b4d7-2931a64b8267 🔍
instrument
ETM
label
• 🔍
lat
-16.891 to -15.974 🔍
lon
132.929 to 133.871 🔍
platform
LANDSAT_7
product_type
surface_reflectance_statistical_summary
time
2018-01-01 00:00:00 to 2018-01-01 00:00:00 🔍
Location 🔗
Metadata Document 🔗
id:
31c2709d-c54f-4451-b4d7-2931a64b8267
product_type:
surface_reflectance_statistical_summary
creation_dt:
2019-06-13T15:19:33.863371
platform:
code:
LANDSAT_7
instrument:
name:
ETM
format:
name:
NetCDF
extent:
coord:
ll:
lat:
-16.89104758008332
lon:
132.93577491283312
lr:
lat:
-16.88109042470352
lon:
133.87144942501132
ul:
lat:
-15.9835520828277
lon:
132.9289705865956
ur:
lat:
-15.973640190852974
lon:
133.8578429466352
to_dt:
2018-01-01T00:00:00
from_dt:
2018-01-01T00:00:00
center_dt:
2018-01-01T00:00:00
grid_spatial:
projection:
valid_data:
type:
Polygon
coordinates:
[
[
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geo_ref_points:
ll:
x:
100000.0
y:
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lr:
x:
200000.0
y:
-1800000.0
ul:
x:
100000.0
y:
-1700000.0
ur:
x:
200000.0
y:
-1700000.0
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:
0.9b5
repo_url:
https://github.com/GeoscienceAustralia/datacube-stats.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/bt2744/work/data/geomedians/2018/
computation:
chunking:
x:
2000
y:
2000
date_ranges:
end_date:
2019-01-01
step_size:
1y
start_date:
2018-01-01
stats_duration:
1y
input_region:
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-29
]
,
[
19
-31
]
,
[
19
-32
]
,
[
19
-40
]
,
[
19
-41
]
,
[
20
-11
]
,
[
20
-15
]
,
[
20
-16
]
,
[
20
-17
]
,
[
20
-18
]
,
[
20
-19
]
,
[
20
-20
]
,
[
20
-21
]
,
[
20
-22
]
,
[
20
-23
]
,
[
20
-24
]
,
[
20
-25
]
,
[
20
-31
]
,
[
20
-33
]
,
[
20
-37
]
,
[
20
-38
]
,
[
20
-39
]
,
[
20
-40
]
,
[
21
-13
]
,
[
21
-14
]
,
[
21
-15
]
,
[
21
-16
]
,
[
21
-18
]
,
[
21
-19
]
,
[
21
-20
]
,
[
21
-21
]
,
[
21
-22
]
,
[
21
-23
]
,
[
21
-24
]
,
[
21
-25
]
,
[
21
-26
]
,
[
21
-27
]
,
[
21
-35
]
,
[
21
-36
]
,
[
21
-37
]
,
[
21
-38
]
,
[
22
-12
]
,
[
22
-13
]
,
[
22
-14
]
,
[
22
-15
]
,
[
22
-16
]
,
[
22
-18
]
,
[
22
-19
]
,
[
22
-20
]
,
[
22
-21
]
,
[
22
-22
]
,
[
22
-23
]
,
[
22
-24
]
,
[
22
-25
]
,
[
22
-26
]
,
[
22
-27
]
,
[
22
-32
]
,
[
22
-33
]
,
[
22
-34
]
,
[
22
-35
]
,
[
23
-12
]
,
[
23
-13
]
,
[
23
-14
]
,
[
23
-15
]
,
[
23
-16
]
,
[
23
-20
]
,
[
23
-21
]
,
[
23
-22
]
,
[
23
-23
]
,
[
23
-24
]
,
[
23
-25
]
,
[
23
-26
]
,
[
23
-27
]
,
[
23
-30
]
,
[
23
-31
]
,
[
23
-32
]
,
[
23
-33
]
,
[
24
-12
]
,
[
24
-13
]
,
[
24
-14
]
,
[
24
-15
]
,
[
24
-16
]
,
[
24
-20
]
,
[
24
-21
]
,
[
24
-22
]
,
[
24
-23
]
,
[
24
-24
]
,
[
24
-25
]
,
[
24
-26
]
,
[
24
-27
]
,
[
24
-28
]
,
[
24
-29
]
,
[
24
-30
]
,
[
25
-12
]
,
[
25
-13
]
,
[
25
-14
]
,
[
25
-15
]
,
[
25
-16
]
,
[
25
-20
]
,
[
25
-21
]
,
[
25
-22
]
,
[
25
-23
]
,
[
25
-24
]
,
[
25
-27
]
,
[
25
-28
]
,
[
26
-12
]
,
[
26
-13
]
,
[
26
-14
]
,
[
26
-15
]
,
[
26
-16
]
,
[
26
-21
]
,
[
26
-22
]
,
[
27
-13
]
,
[
27
-14
]
,
[
]
27
-15
]
,
filter_product:
var_attributes:
output_products:
[
]
name:
ls7_nbart_geomedian_annual
metadata:
format:
name:
NetCDF
platform:
code:
LANDSAT_7
instrument:
name:
ETM
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/{x}_{y}/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:
2.0
publisher_email:
earth.observation@ga.gov.au
keywords_vocabulary:
GCMD
coverage_content_type:
modelResult
machine:
uname:
Linux r3579 3.10.0-862.14.4.el6.x86_64 #1 SMP Thu Sep 27 07:25:17 AEST 2018 x86_64
hostname:
r3579
software_versions:
python:
version:
3.6.7 | packaged by conda-forge | (default, Feb 20 2019, 02:51:38)
[GCC 7.3.0]
datacube:
version:
1.6.2+398.g0e94625d
repo_url:
https://github.com/opendatacube/datacube-core.git
source_datasets:
statistics:
step:
1y
period:
1y