{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:19:13.553746", "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-Nov-09_to_2020-Nov-11_116.5_-31.5"}, "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": 2020110000360}, "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": "November 09 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 11 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 207986.94483929547}, "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": ["Indian Ocean"]}, "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": -31.5}, "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": 116.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "116.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 112.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 117.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -34.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[111.97, -29.47], [112.5, -29.25], [112.802, -29.375], [112.854, -29.25], [112.75, -29.0], [112.97, -28.47], [113.5, -28.25], [113.75, -28.354], [113.875, -28.302], [113.75, -28.0], [113.854, -27.75], [113.75, -27.5], [113.854, -27.25], [113.75, -27.0], [113.854, -26.75], [113.75, -26.5], [113.97, -25.97], [114.323, -25.823], [114.47, -25.47], [115.0, -25.25], [115.53, -25.47], [115.677, -25.823], [116.03, -25.97], [116.25, -26.5], [116.146, -26.75], [116.25, -27.0], [116.146, -27.25], [116.177, -27.323], [116.53, -27.47], [116.75, -28.0], [116.646, -28.25], [116.677, -28.323], [117.03, -28.47], [117.25, -29.0], [117.146, -29.25], [117.25, -29.5], [117.146, -29.75], [117.177, -29.823], [117.53, -29.97], [117.677, -30.323], [118.03, -30.47], [118.25, -31.0], [118.146, -31.25], [118.25, -31.5], [118.146, -31.75], [118.25, -32.0], [118.146, -32.25], [118.25, -32.5], [118.146, -32.75], [118.25, -33.0], [118.146, -33.25], [118.25, -33.5], [118.03, -34.03], [117.5, -34.25], [117.25, -34.146], [117.177, -34.177], [117.03, -34.53], [116.5, -34.75], [115.97, -34.53], [115.823, -34.177], [115.75, -34.146], [115.5, -34.25], [114.97, -34.03], [114.75, -33.5], [114.957, -33.0], [114.823, -32.677], [114.47, -32.53], [114.25, -32.0], [114.457, -31.5], [114.323, -31.177], [114.25, -31.146], [114.0, -31.25], [113.75, -31.146], [113.5, -31.25], [113.25, -31.146], [113.0, -31.25], [112.75, -31.146], [112.5, -31.25], [111.97, -31.03], [111.75, -30.5], [111.854, -30.25], [111.75, -30.0], [111.97, -29.47]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.Australia", "S.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-11-09T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[111.85355339059328, -30.25], [111.75, -30.0], [111.96966991411009, -29.46966991411009], [112.5, -29.25], [112.80177669529664, -29.375], [112.85355339059328, -29.25], [112.75, -29.0], [112.96966991411009, -28.46966991411009], [113.5, -28.25], [113.75, -28.353553390593273], [113.875, -28.30177669529664], [113.75, -28.0], [113.85355339059328, -27.75], [113.75, -27.5], [113.85355339059328, -27.25], [113.75, -27.0], [113.85355339059328, -26.75], [113.75, -26.5], [113.96966991411009, -25.96966991411009], [114.32322330470336, -25.82322330470336], [114.46966991411009, -25.46966991411009], [115.0, -25.25], [115.53033008588991, -25.46966991411009], [115.67677669529664, -25.82322330470336], [116.03033008588991, -25.96966991411009], [116.25, -26.5], [116.14644660940672, -26.75], [116.25, -27.0], [116.14644660940672, -27.25], [116.17677669529664, -27.32322330470336], [116.53033008588991, -27.46966991411009], [116.75, -28.0], [116.64644660940672, -28.25], [116.67677669529664, -28.32322330470336], [117.03033008588991, -28.46966991411009], [117.25, -29.0], [117.14644660940672, -29.25], [117.25, -29.5], [117.14644660940672, -29.75], [117.17677669529664, -29.82322330470336], [117.53033008588991, -29.96966991411009], [117.67677669529664, -30.32322330470336], [118.03033008588991, -30.46966991411009], [118.25, -31.0], [118.14644660940672, -31.25], [118.25, -31.5], [118.14644660940672, -31.75], [118.25, -32.0], [118.14644660940672, -32.25], [118.25, -32.5], [118.14644660940672, -32.75], [118.25, -33.0], [118.14644660940672, -33.25], [118.25, -33.5], [118.03033008588991, -34.03033008588991], [117.5, -34.25], [117.25, -34.14644660940672], [117.17677669529664, -34.17677669529664], [117.03033008588991, -34.53033008588991], [116.5, -34.75], [115.96966991411009, -34.53033008588991], [115.82322330470336, -34.17677669529664], [115.75, -34.14644660940672], [115.5, -34.25], [114.96966991411009, -34.03033008588991], [114.75, -33.5], [114.95710678118654, -33.0], [114.82322330470336, -32.67677669529664], [114.46966991411009, -32.53033008588991], [114.25, -32.0], [114.45710678118654, -31.5], [114.32322330470336, -31.17677669529664], [114.25, -31.146446609406727], [114.0, -31.25], [113.75, -31.146446609406727], [113.5, -31.25], [113.25, -31.146446609406727], [113.0, -31.25], [112.75, -31.146446609406727], [112.5, -31.25], [111.96966991411009, -31.03033008588991], [111.75, -30.5], [111.85355339059328, -30.25]]]}, "2020-11-10T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[111.85355339059328, -30.25], [111.75, -30.0], [111.96966991411009, -29.46966991411009], [112.5, -29.25], [112.80177669529664, -29.375], [112.85355339059328, -29.25], [112.75, -29.0], [112.96966991411009, -28.46966991411009], [113.5, -28.25], [113.75, -28.353553390593273], [113.875, -28.30177669529664], [113.75, -28.0], [113.85355339059328, -27.75], [113.75, -27.5], [113.85355339059328, -27.25], [113.75, -27.0], [113.85355339059328, -26.75], [113.75, -26.5], [113.96966991411009, -25.96966991411009], [114.32322330470336, -25.82322330470336], [114.46966991411009, -25.46966991411009], [115.0, -25.25], [115.53033008588991, -25.46966991411009], [115.67677669529664, -25.82322330470336], [116.03033008588991, -25.96966991411009], [116.25, -26.5], [116.14644660940672, -26.75], [116.25, -27.0], [116.14644660940672, -27.25], [116.17677669529664, -27.32322330470336], [116.53033008588991, -27.46966991411009], [116.75, -28.0], [116.64644660940672, -28.25], [116.67677669529664, -28.32322330470336], [117.03033008588991, -28.46966991411009], [117.25, -29.0], [117.14644660940672, -29.25], [117.25, -29.5], [117.14644660940672, -29.75], [117.17677669529664, -29.82322330470336], [117.53033008588991, -29.96966991411009], [117.67677669529664, -30.32322330470336], [118.03033008588991, -30.46966991411009], [118.25, -31.0], [118.14644660940672, -31.25], [118.25, -31.5], [118.14644660940672, -31.75], [118.25, -32.0], [118.14644660940672, -32.25], [118.25, -32.5], [118.14644660940672, -32.75], [118.25, -33.0], [118.14644660940672, -33.25], [118.25, -33.5], [118.03033008588991, -34.03033008588991], [117.5, -34.25], [117.25, -34.14644660940672], [117.17677669529664, -34.17677669529664], [117.03033008588991, -34.53033008588991], [116.5, -34.75], [115.96966991411009, -34.53033008588991], [115.82322330470336, -34.17677669529664], [115.75, -34.14644660940672], [115.5, -34.25], [114.96966991411009, -34.03033008588991], [114.75, -33.5], [114.95710678118654, -33.0], [114.82322330470336, -32.67677669529664], [114.46966991411009, -32.53033008588991], [114.25, -32.0], [114.45710678118654, -31.5], [114.32322330470336, -31.17677669529664], [114.25, -31.146446609406727], [114.0, -31.25], [113.75, -31.146446609406727], [113.5, -31.25], [113.25, -31.146446609406727], [113.0, -31.25], [112.75, -31.146446609406727], [112.5, -31.25], [111.96966991411009, -31.03033008588991], [111.75, -30.5], [111.85355339059328, -30.25]]]}, "2020-11-11T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[111.85355339059328, -30.25], [111.75, -30.0], [111.96966991411009, -29.46966991411009], [112.5, -29.25], [112.80177669529664, -29.375], [112.85355339059328, -29.25], [112.75, -29.0], [112.96966991411009, -28.46966991411009], [113.5, -28.25], [113.75, -28.353553390593273], [113.875, -28.30177669529664], [113.75, -28.0], [113.85355339059328, -27.75], [113.75, -27.5], [113.85355339059328, -27.25], [113.75, -27.0], [113.85355339059328, -26.75], [113.75, -26.5], [113.96966991411009, -25.96966991411009], [114.32322330470336, -25.82322330470336], [114.46966991411009, -25.46966991411009], [115.0, -25.25], [115.53033008588991, -25.46966991411009], [115.67677669529664, -25.82322330470336], [116.03033008588991, -25.96966991411009], [116.25, -26.5], [116.14644660940672, -26.75], [116.25, -27.0], [116.14644660940672, -27.25], [116.17677669529664, -27.32322330470336], [116.53033008588991, -27.46966991411009], [116.75, -28.0], [116.64644660940672, -28.25], [116.67677669529664, -28.32322330470336], [117.03033008588991, -28.46966991411009], [117.25, -29.0], [117.14644660940672, -29.25], [117.25, -29.5], [117.14644660940672, -29.75], [117.17677669529664, -29.82322330470336], [117.53033008588991, -29.96966991411009], [117.67677669529664, -30.32322330470336], [118.03033008588991, -30.46966991411009], [118.25, -31.0], [118.14644660940672, -31.25], [118.25, -31.5], [118.14644660940672, -31.75], [118.25, -32.0], [118.14644660940672, -32.25], [118.25, -32.5], [118.14644660940672, -32.75], [118.25, -33.0], [118.14644660940672, -33.25], [118.25, -33.5], [118.03033008588991, -34.03033008588991], [117.5, -34.25], [117.25, -34.14644660940672], [117.17677669529664, -34.17677669529664], [117.03033008588991, -34.53033008588991], [116.5, -34.75], [115.96966991411009, -34.53033008588991], [115.82322330470336, -34.17677669529664], [115.75, -34.14644660940672], [115.5, -34.25], [114.96966991411009, -34.03033008588991], [114.75, -33.5], [114.95710678118654, -33.0], [114.82322330470336, -32.67677669529664], [114.46966991411009, -32.53033008588991], [114.25, -32.0], [114.45710678118654, -31.5], [114.32322330470336, -31.17677669529664], [114.25, -31.146446609406727], [114.0, -31.25], [113.75, -31.146446609406727], [113.5, -31.25], [113.25, -31.146446609406727], [113.0, -31.25], [112.75, -31.146446609406727], [112.5, -31.25], [111.96966991411009, -31.03033008588991], [111.75, -30.5], [111.85355339059328, -30.25]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.139955599271389}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.2383654525251275}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.743799809724067, 15.01305971989757, 15.729633899027249]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.602069865885596, 10.966379916894425, 11.344692959708652]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.6877572520934825, -5.734126626677899, -5.293212478803999]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.488377900917328, -8.139955599271389, -7.367706990047566]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4076360184575025, -1.6445699262072577, -1.5260303673408149]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6732975824303544, -1.9696508168588949, -1.8114270279554627]}}