{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:00:23.288418", "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": "2024-Aug-01_to_2024-Aug-04_124.0_-32.0"}, "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": 2024080000014}, "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 01 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 04 2024"}, "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": 146235.12766942647}, "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": []}, "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": -32.0}, "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": 124.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "124.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 118.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 126.0}, "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": -30.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[119.0, -31.75], [119.53, -31.97], [119.68, -32.32], [119.75, -32.35], [119.82, -32.32], [119.97, -31.97], [120.32, -31.82], [120.46, -31.5], [120.25, -31.0], [120.35, -30.75], [120.25, -30.5], [120.47, -29.97], [121.0, -29.75], [121.25, -29.85], [121.5, -29.75], [122.03, -29.97], [122.18, -30.32], [122.25, -30.35], [122.5, -30.25], [122.75, -30.35], [123.0, -30.25], [123.53, -30.47], [123.68, -30.82], [123.75, -30.85], [124.0, -30.75], [124.25, -30.85], [124.32, -30.82], [124.47, -30.47], [125.0, -30.25], [125.53, -30.47], [125.75, -31.0], [125.65, -31.25], [125.68, -31.32], [125.75, -31.35], [126.0, -31.25], [126.53, -31.47], [126.75, -32.0], [126.53, -32.53], [126.0, -32.75], [125.75, -32.65], [125.68, -32.68], [125.53, -33.03], [125.0, -33.25], [124.75, -33.15], [124.5, -33.25], [124.25, -33.15], [124.18, -33.18], [124.15, -33.25], [124.25, -33.5], [124.03, -34.03], [123.5, -34.25], [123.25, -34.15], [123.0, -34.25], [122.75, -34.15], [122.5, -34.25], [122.25, -34.15], [122.0, -34.25], [121.75, -34.15], [121.5, -34.25], [121.25, -34.15], [121.18, -34.18], [121.03, -34.53], [120.5, -34.75], [119.97, -34.53], [119.82, -34.18], [119.47, -34.03], [119.32, -33.68], [119.25, -33.65], [119.0, -33.75], [118.75, -33.65], [118.5, -33.75], [118.25, -33.65], [118.0, -33.75], [117.47, -33.53], [117.25, -33.0], [117.47, -32.47], [117.82, -32.32], [117.97, -31.97], [118.5, -31.75], [118.75, -31.85], [119.0, -31.75]]]]}}, "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": {"2024-08-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.97, -31.97], [118.5, -31.75], [118.75, -31.85], [119.0, -31.75], [119.53, -31.97], [119.68, -32.32], [119.75, -32.35], [119.82, -32.32], [119.97, -31.97], [120.32, -31.82], [120.46, -31.5], [120.25, -31.0], [120.35, -30.75], [120.25, -30.5], [120.47, -29.97], [121.0, -29.75], [121.53, -29.97], [121.75, -30.5], [121.65, -30.75], [121.75, -31.0], [121.63, -31.3], [122.03, -31.47], [122.18, -31.82], [122.25, -31.85], [122.5, -31.75], [122.75, -31.85], [123.0, -31.75], [123.25, -31.85], [123.32, -31.82], [123.35, -31.75], [123.25, -31.5], [123.47, -30.97], [124.0, -30.75], [124.25, -30.85], [124.5, -30.75], [125.03, -30.97], [125.25, -31.5], [125.15, -31.75], [125.25, -32.0], [125.15, -32.25], [125.25, -32.5], [125.03, -33.03], [124.5, -33.25], [124.25, -33.15], [124.18, -33.18], [124.15, -33.25], [124.25, -33.5], [124.03, -34.03], [123.5, -34.25], [123.25, -34.15], [123.0, -34.25], [122.75, -34.15], [122.5, -34.25], [122.25, -34.15], [122.0, -34.25], [121.75, -34.15], [121.5, -34.25], [121.25, -34.15], [121.18, -34.18], [121.03, -34.53], [120.5, -34.75], [119.97, -34.53], [119.82, -34.18], [119.47, -34.03], [119.32, -33.68], [119.25, -33.65], [119.0, -33.75], [118.75, -33.65], [118.5, -33.75], [118.25, -33.65], [118.0, -33.75], [117.47, -33.53], [117.25, -33.0], [117.47, -32.47], [117.82, -32.32], [117.97, -31.97]]]]}, "2024-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.97, -31.97], [118.5, -31.75], [118.75, -31.85], [119.0, -31.75], [119.53, -31.97], [119.68, -32.32], [119.75, -32.35], [119.82, -32.32], [119.97, -31.97], [120.32, -31.82], [120.46, -31.5], [120.25, -31.0], [120.35, -30.75], [120.25, -30.5], [120.47, -29.97], [121.0, -29.75], [121.25, -29.85], [121.5, -29.75], [122.03, -29.97], [122.18, -30.32], [122.25, -30.35], [122.5, -30.25], [122.75, -30.35], [123.0, -30.25], [123.53, -30.47], [123.68, -30.82], [123.75, -30.85], [124.0, -30.75], [124.25, -30.85], [124.32, -30.82], [124.47, -30.47], [125.0, -30.25], [125.53, -30.47], [125.75, -31.0], [125.65, -31.25], [125.68, -31.32], [125.75, -31.35], [126.0, -31.25], [126.53, -31.47], [126.75, -32.0], [126.53, -32.53], [126.0, -32.75], [125.75, -32.65], [125.68, -32.68], [125.53, -33.03], [125.0, -33.25], [124.75, -33.15], [124.5, -33.25], [124.25, -33.15], [124.18, -33.18], [124.15, -33.25], [124.25, -33.5], [124.03, -34.03], [123.5, -34.25], [123.25, -34.15], [123.0, -34.25], [122.75, -34.15], [122.5, -34.25], [122.25, -34.15], [122.0, -34.25], [121.75, -34.15], [121.5, -34.25], [121.25, -34.15], [121.18, -34.18], [121.03, -34.53], [120.5, -34.75], [119.97, -34.53], [119.82, -34.18], [119.47, -34.03], [119.32, -33.68], [119.25, -33.65], [119.0, -33.75], [118.75, -33.65], [118.5, -33.75], [118.25, -33.65], [118.0, -33.75], [117.47, -33.53], [117.25, -33.0], [117.47, -32.47], [117.82, -32.32], [117.97, -31.97]]]]}, "2024-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.97, -31.97], [118.5, -31.75], [118.75, -31.85], [119.0, -31.75], [119.53, -31.97], [119.68, -32.32], [119.75, -32.35], [119.82, -32.32], [119.97, -31.97], [120.32, -31.82], [120.46, -31.5], [120.25, -31.0], [120.35, -30.75], [120.25, -30.5], [120.47, -29.97], [121.0, -29.75], [121.25, -29.85], [121.5, -29.75], [122.03, -29.97], [122.18, -30.32], [122.25, -30.35], [122.5, -30.25], [122.75, -30.35], [123.0, -30.25], [123.53, -30.47], [123.68, -30.82], [123.75, -30.85], [124.0, -30.75], [124.25, -30.85], [124.32, -30.82], [124.47, -30.47], [125.0, -30.25], [125.53, -30.47], [125.75, -31.0], [125.65, -31.25], [125.68, -31.32], [125.75, -31.35], [126.0, -31.25], [126.53, -31.47], [126.75, -32.0], [126.53, -32.53], [126.0, -32.75], [125.75, -32.65], [125.68, -32.68], [125.53, -33.03], [125.0, -33.25], [124.75, -33.15], [124.5, -33.25], [124.25, -33.15], [124.18, -33.18], [124.15, -33.25], [124.25, -33.5], [124.03, -34.03], [123.5, -34.25], [123.25, -34.15], [123.0, -34.25], [122.75, -34.15], [122.5, -34.25], [122.25, -34.15], [122.0, -34.25], [121.75, -34.15], [121.5, -34.25], [121.25, -34.15], [121.18, -34.18], [121.03, -34.53], [120.5, -34.75], [119.97, -34.53], [119.82, -34.18], [119.47, -34.03], [119.32, -33.68], [119.25, -33.65], [119.0, -33.75], [118.75, -33.65], [118.5, -33.75], [118.25, -33.65], [118.0, -33.75], [117.47, -33.53], [117.25, -33.0], [117.47, -32.47], [117.82, -32.32], [117.97, -31.97]]]]}, "2024-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.47, -31.03], [120.25, -30.5], [120.47, -29.97], [121.0, -29.75], [121.25, -29.85], [121.5, -29.75], [122.03, -29.97], [122.18, -30.32], [122.25, -30.35], [122.5, -30.25], [122.75, -30.35], [123.0, -30.25], [123.53, -30.47], [123.68, -30.82], [123.75, -30.85], [124.0, -30.75], [124.25, -30.85], [124.32, -30.82], [124.47, -30.47], [125.0, -30.25], [125.53, -30.47], [125.75, -31.0], [125.65, -31.25], [125.68, -31.32], [125.75, -31.35], [126.0, -31.25], [126.53, -31.47], [126.75, -32.0], [126.53, -32.53], [126.0, -32.75], [125.75, -32.65], [125.68, -32.68], [125.53, -33.03], [125.0, -33.25], [124.75, -33.15], [124.5, -33.25], [124.25, -33.15], [124.0, -33.25], [123.75, -33.15], [123.5, -33.25], [122.97, -33.03], [122.82, -32.68], [122.75, -32.65], [122.5, -32.75], [121.97, -32.53], [121.75, -32.0], [121.85, -31.75], [121.82, -31.68], [121.75, -31.65], [121.5, -31.75], [120.97, -31.53], [120.82, -31.18], [120.47, -31.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.164060271572964}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.093210514750935}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [8.41033169976589, 8.271520077105492, 8.575914060773812, 9.13942997667914]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.836635531866648, 6.93635372591865, 6.971545335150324, 8.286332072034554]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.957746406643263, -3.2712001697230377, -2.991961906724371, -3.1326345782409066]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.154156371031661, -4.164060271572964, -3.830282963224647, -3.669845169902203]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4375235711842387, -1.5328667480789568, -1.3141480074127752, -1.2245159922344127]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0739534509847384, -1.901891146127463, -1.5876141745554775, -1.3808817314434811]}}