{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:17:53.366687", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2020-Aug-22_to_2020-Aug-25_150.0_-37.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2020080000755}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "August 22 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 25 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 69003.62539659652}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Australia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": ["Tasman Sea"]}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": -37.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 150.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "150.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 148.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 153.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -38.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -36.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[149.354, -37.25], [149.25, -37.0], [149.47, -36.47], [149.823, -36.323], [149.97, -35.97], [150.5, -35.75], [150.75, 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"value": ["E.Australia", "S.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-08-22T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[148.25, -38.64644660940672], [148.0, -38.75], [147.46966991411009, -38.53033008588991], [147.25, -38.0], [147.46966991411009, -37.46966991411009], [148.0, -37.25], [148.25, -37.35355339059328], [148.5, -37.25], [148.75, -37.35355339059328], [149.0, -37.25], [149.25, -37.35355339059328], [149.32322330470336, -37.32322330470336], [149.35355339059328, -37.25], [149.25, -37.0], [149.46966991411009, -36.46966991411009], [149.82322330470336, -36.32322330470336], [149.96966991411009, -35.96966991411009], [150.5, -35.75], [150.75, -35.85355339059328], [151.0, -35.75], [151.25, -35.85355339059328], [151.32322330470336, -35.82322330470336], [151.46966991411009, -35.46966991411009], [152.0, -35.25], [152.25, -35.35355339059328], [152.5, -35.25], [152.75, 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-38.64644660940672]]]}, "2020-08-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[150.0, -38.25], [149.46966991411009, -38.03033008588991], [149.25, -37.5], [149.46966991411009, -36.96966991411009], [150.0, -36.75], [150.25, -36.85355339059328], [150.5, -36.75], [151.03033008588991, -36.96966991411009], [151.25, -37.5], [151.03033008588991, -38.03033008588991], [150.5, -38.25], [150.25, -38.14644660940672], [150.0, -38.25]]], [[[152.25, -36.0], [152.46966991411009, -35.46966991411009], [153.0, -35.25], [153.53033008588991, -35.46966991411009], [153.75, -36.0], [153.64644660940672, -36.25], [153.75, -36.5], [153.53033008588991, -37.03033008588991], [153.0, -37.25], [152.46966991411009, -37.03033008588991], [152.25, -36.5], [152.35355339059328, -36.25], [152.25, -36.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.6202860608323135}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3093040661599633}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.963405520546416, 11.811568153267274, 11.832944388597696, 12.138086745963847]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.230315260268412, 9.565945229219778, 9.36085643279256, 10.802441817696092]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.864563523469099, -2.05323773206985, -2.0640158763062693, -1.9319695326026647]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.6202860608323135, -2.5365983779753947, -2.601716248693549, -2.030564112934087]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1333909042533987, -1.521492048802854, -1.492186465595056, -1.3529572610310545]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.5983389217178887, -1.9796677167202363, -1.9626447396008035, -1.450105287645344]}}