diff --git a/.github/workflows/terria_preview.yaml b/.github/workflows/terria_preview.yaml
index a75e91994..d2434131a 100644
--- a/.github/workflows/terria_preview.yaml
+++ b/.github/workflows/terria_preview.yaml
@@ -26,7 +26,7 @@ jobs:
**Terria Cube preview:**
https://terria-cube.terria.io/#clean&https://raw.githubusercontent.com/GeoscienceAustralia/dea-config/${{ github.head_ref }}/dev/terria/terria-cube-v8.json
- 
+ 
**DEA Maps preview:**
https://maps.dea.ga.gov.au/#clean&https://raw.githubusercontent.com/GeoscienceAustralia/dea-config/${{ github.head_ref }}/prod/terria/dea-maps-v8.json
diff --git a/_static/dea-logo-small.png b/_static/dea-logo-small.png
new file mode 100644
index 000000000..2ff506249
Binary files /dev/null and b/_static/dea-logo-small.png differ
diff --git a/prod/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/style_intertidal_cfg.py b/prod/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/style_intertidal_cfg.py
index d4d8d1e94..6e1c21de3 100644
--- a/prod/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/style_intertidal_cfg.py
+++ b/prod/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/style_intertidal_cfg.py
@@ -163,6 +163,34 @@
"hot": "ta_hot",
},
},
+ "multi_date": [
+ {
+ "allowed_count_range": [2, 2],
+ "animate": False,
+ "preserve_user_date_order": True,
+ "pass_raw_data": True,
+ "aggregator_function": {
+ "function": "ows_refactored.sea_ocean_coast.intertidal_c3.utils_intertidal.multi_date_raw_elevation",
+ "mapped_bands": True,
+ "kwargs": {
+ "band": "elevation",
+ }
+ },
+ "mpl_ramp": "RdBu",
+ "range": [-0.5, 0.5],
+ "legend": {
+ "title": "Elevation change (metres)",
+ "begin": "-0.5",
+ "end": "0.5",
+ "ticks": [
+ "-0.5",
+ "0.0",
+ "0.5",
+ ]
+ },
+ "feature_info_label": "elevation_difference",
+ },
+ ],
"include_in_feature_info": False,
"needed_bands": ["elevation", "ta_lot", "ta_hot"],
"mpl_ramp": "viridis",
diff --git a/prod/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py b/prod/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py
index c75adf353..fcd46b3cb 100644
--- a/prod/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py
+++ b/prod/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py
@@ -41,3 +41,15 @@ def uncertainty_adaptive(data, band, lot, hot, band_mapper=None):
proportion_array = data[band] / otr
return proportion_array
+
+
+def multi_date_raw_elevation(data, band, band_mapper=None):
+ """
+ Compares two elevation layers and calculates difference in elevation.
+ """
+ if band_mapper is not None:
+ band = band_mapper(band)
+
+ data1, data2 = (data.sel(time=dt) for dt in data.coords["time"].values)
+
+ return data2[band] - data1[band]
diff --git a/prod/terria/dea-maps-v8.json b/prod/terria/dea-maps-v8.json
index abedc6501..7e51ba1c8 100644
--- a/prod/terria/dea-maps-v8.json
+++ b/prod/terria/dea-maps-v8.json
@@ -1150,13 +1150,19 @@
"linkedWcsUrl": "https://ows.dea.ga.gov.au/",
"linkedWcsCoverage": "ga_s2ls_intertidal_cyear_3",
"dateFormat": "'Year: 'yyyy",
+ "availableDiffStyles": ["intertidal_elevation_adaptive"],
"leafletUpdateInterval": 750,
"tileErrorHandlingOptions": {
"ignoreUnknownTileErrors": true
},
"shortReport": "For more information and to download data, visit the DEA Intertidal product description",
+ "diffItemProperties": {
+ "featureInfoTemplate": {
+ "template": "Digital Earth Australia Intertidal
Elevation differences are shown for pixels with data in both timesteps only.
Intertidal elevation in {{data.0.time}}:
{{#terria.formatNumber}}{maximumFractionDigits:2}{{data.0.bands.elevation}}{{/terria.formatNumber}} metres (± {{#terria.formatNumber}}{maximumFractionDigits:2}{{data.0.bands.elevation_uncertainty}}{{/terria.formatNumber}})
Intertidal elevation in {{data.1.time}}:
{{#terria.formatNumber}}{maximumFractionDigits:2}{{data.1.bands.elevation}}{{/terria.formatNumber}} metres (± {{#terria.formatNumber}}{maximumFractionDigits:2}{{data.1.bands.elevation_uncertainty}}{{/terria.formatNumber}})
For more information about intertidal mapping accuracy and limitations and data access options, visit the DEA Intertidal product description.Digital Earth Australia Intertidal
This location had an elevation above modelled Mean Sea Level (MSL):
{{#terria.formatNumber}}{maximumFractionDigits:2}{{data.0.bands.elevation}}{{/terria.formatNumber}} metres (± {{#terria.formatNumber}}{maximumFractionDigits:2}{{data.0.bands.elevation_uncertainty}}{{/terria.formatNumber}})
It was exposed from tidal inundation for:
{{data.0.bands.exposure}}% of the {{#terria.formatDateTime}}{format: \"yyyy\"}{{data.0.time}}{{/terria.formatDateTime}} analysis period
Mapped intertidal extents can be affected by biases in the tidal conditions observed by satellites
. At this location, satellites observed the coastline at tide heights ranging from
{{#terria.formatNumber}}{maximumFractionDigits:2}{{data.0.bands.ta_lot}}{{/terria.formatNumber}} to
+{{#terria.formatNumber}}{maximumFractionDigits:2}{{data.0.bands.ta_hot}}{{/terria.formatNumber}} metres above MSL, compared to the full astronomical tide range of
{{#terria.formatNumber}}{maximumFractionDigits:2}{{data.0.bands.ta_lat}}{{/terria.formatNumber}} to
+{{#terria.formatNumber}}{maximumFractionDigits:2}{{data.0.bands.ta_hat}}{{/terria.formatNumber}} metres above MSL.
This resulted in satellite data observing
~{{data.0.bands.ta_spread}}% of the astronomical tide range, and failing to observe the lowest
~{{data.0.bands.ta_offset_low}}% and highest
~{{data.0.bands.ta_offset_high}}% of tides.
For more information about intertidal mapping accuracy and limitations and data access options, visit the DEA Intertidal product description.Digital Earth Australia Intertidal
This location had an elevation above modelled Mean Sea Level (MSL):
{{#terria.formatNumber}}{maximumFractionDigits:2}{{data.0.bands.elevation}}{{/terria.formatNumber}} metres (± {{#terria.formatNumber}}{maximumFractionDigits:2}{{data.0.bands.elevation_uncertainty}}{{/terria.formatNumber}})
It was exposed from tidal inundation for:
{{data.0.bands.exposure}}% of the {{#terria.formatDateTime}}{format: \"yyyy\"}{{data.0.time}}{{/terria.formatDateTime}} analysis period
Mapped intertidal extents can be affected by biases in the tidal conditions observed by satellites
. At this location, satellites observed the coastline at tide heights ranging from
{{#terria.formatNumber}}{maximumFractionDigits:2}{{data.0.bands.ta_lot}}{{/terria.formatNumber}} to
+{{#terria.formatNumber}}{maximumFractionDigits:2}{{data.0.bands.ta_hot}}{{/terria.formatNumber}} metres above MSL, compared to the full astronomical tide range of
{{#terria.formatNumber}}{maximumFractionDigits:2}{{data.0.bands.ta_lat}}{{/terria.formatNumber}} to
+{{#terria.formatNumber}}{maximumFractionDigits:2}{{data.0.bands.ta_hat}}{{/terria.formatNumber}} metres above MSL.
This resulted in satellite data observing
~{{data.0.bands.ta_spread}}% of the astronomical tide range, and failing to observe the lowest
~{{data.0.bands.ta_offset_low}}% and highest
~{{data.0.bands.ta_offset_high}}% of tides.
For more information about intertidal mapping accuracy and limitations and data access options, visit the DEA Intertidal product description.