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Service Description: <div style=''text-align:Left;''><div><div><div style=''font-size:12pt''><p><span>This dataset contains a satellite observed timeseries of the extent of winter irrigated crop areas in NSW from present day, back to 1987. </span></p><p><span>Observations have been derived from medium-resolution multi-spectral satellite imagery (30m/pixel Landsat with a 16 day return interval and 10 m/pixel Sentinel-2 with a 5 day return interval). </span></p><p><span>The presence of irrigated crops is identified using established vegetation‑condition indicators commonly referenced in remote‑sensing literature to assess crop vigour and water‑stress patterns. Additionally, Earth observation-derived evapotranspiration datasets are incorporated to support the estimation of irrigated crop areas, improving the distinction between irrigated and non‑irrigated agricultural land. </span></p><p><span>Expert opinion is then applied to qualify whether a field was irrigated, based on its greenness relative to the surrounding landscape throughout the winter season (May to October). The polygons are delineated in a semi-supervised manner and are accurate to the closest hectare.</span></p><p><span>A metadata and data quality statement is available in the Documents section of the dataset homepage on the NSW SEED portal.</span></p></div></div></div></div>
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Description: This dataset contains a satellite observed timeseries of the extent of winter irrigated crop areas in NSW from present day, back to 1987. Observations have been derived from medium-resolution multi-spectral satellite imagery (30m/pixel Landsat with a 16 day return interval and 10 m/pixel Sentinel-2 with a 5 day return interval). The presence of irrigated crops is identified using established vegetation‑condition indicators commonly referenced in remote‑sensing literature to assess crop vigour and water‑stress patterns. Additionally, Earth observation-derived evapotranspiration datasets are incorporated to support the estimation of irrigated crop areas, improving the distinction between irrigated and non‑irrigated agricultural land. Expert opinion is then applied to qualify whether a field was irrigated, based on its greenness relative to the surrounding landscape throughout the winter season (May to October). The polygons are delineated in a semi-supervised manner and are accurate to the closest hectare.A metadata and data quality statement is available in the Documents section of the dataset homepage on the NSW SEED portal.
Service Item Id: 9e5abffdbfa042e6b631768267549f65
Copyright Text: NSW Department of Climate Change, Energy, the Environment and Water
Spatial Reference:
4283
(4283)
LatestVCSWkid(0)
Initial Extent:
XMin: 151.5196069442063
YMin: -30.30421901587182
XMax: 154.88979059022213
YMax: -27.649123451918253
Spatial Reference: 4283
(4283)
LatestVCSWkid(0)
Full Extent:
XMin: 141.0011092840001
YMin: -37.50517562299996
XMax: 153.63886955400005
YMax: -28.150971624999954
Spatial Reference: 4283
(4283)
LatestVCSWkid(0)
Units: esriDecimalDegrees
Document Info:
Title: Irrigated Crop Areas - Winter
Author:
Comments: This dataset contains a satellite observed timeseries of the extent of winter irrigated crop areas in NSW from present day, back to 1987. Observations have been derived from medium-resolution multi-spectral satellite imagery (30m/pixel Landsat with a 16 day return interval and 10 m/pixel Sentinel-2 with a 5 day return interval). The presence of irrigated crops is identified using established vegetation‑condition indicators commonly referenced in remote‑sensing literature to assess crop vigour and water‑stress patterns. Additionally, Earth observation–derived evapotranspiration datasets are incorporated to support the estimation of irrigated crop areas, improving the distinction between irrigated and non‑irrigated agricultural land. Expert opinion is then applied to qualify whether a field was irrigated, based on its greenness relative to the surrounding landscape throughout the winter season (May to October). The polygons are delineated in a semi-supervised manner and are accurate to the closest hectare.A metadata and data quality statement is available in the Documents section of the dataset homepage on the NSW SEED portal.
Subject: This product provides a timeseries of earth observation derived (Landsat and Sentinel satellites) location and extent of NSW winter season irrigated crops, from 1987 to the present day updated on an ongoing basis for the selected catchments.
Category:
Keywords: Irrigated Crop Areas,DCCEEW Water,Earth Observation,seed-layer-catalogue
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