{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:54:23.429612", "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": "2023-Jul-22_to_2023-Jul-24_134.5_-19.5"}, "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": 2023070000647}, "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": "July 22 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 24 2023"}, "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": 69389.40839526601}, "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": -19.5}, "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": 134.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "134.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 134.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 137.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -19.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[133.47, -20.47], [133.82, -20.32], [133.85, -20.25], [133.75, -20.0], [133.85, -19.75], [133.75, -19.5], [133.97, -18.97], [134.5, -18.75], [135.03, -18.97], [135.18, -19.32], [135.25, -19.35], [135.5, -19.25], [135.75, -19.35], [136.0, -19.25], [136.25, -19.35], [136.5, -19.25], [137.03, -19.47], [137.18, -19.82], [137.53, -19.97], [137.75, -20.5], [137.65, -20.75], [137.75, -21.0], [137.65, -21.25], [137.75, -21.5], [137.53, -22.03], [137.0, -22.25], [136.75, -22.15], [136.5, -22.25], [136.25, -22.15], [136.0, -22.25], [135.5, -22.04], [135.0, -22.25], [134.75, -22.15], [134.5, -22.25], [133.97, -22.03], [133.82, -21.68], [133.47, -21.53], [133.25, -21.0], [133.47, -20.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia", "C.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.47, -21.53], [133.25, -21.0], [133.47, -20.47], [133.82, -20.32], [133.85, -20.25], [133.75, -20.0], [133.85, -19.75], [133.75, -19.5], [133.97, -18.97], [134.5, -18.75], [135.03, -18.97], [135.18, -19.32], [135.25, -19.35], [135.5, -19.25], [135.75, -19.35], [136.0, -19.25], [136.25, -19.35], [136.5, -19.25], [137.03, -19.47], [137.18, -19.82], [137.53, -19.97], [137.75, -20.5], [137.65, -20.75], [137.75, -21.0], [137.65, -21.25], [137.75, -21.5], [137.53, -22.03], [137.0, -22.25], [136.75, -22.15], [136.5, -22.25], [136.25, -22.15], [136.0, -22.25], [135.5, -22.04], [135.0, -22.25], [134.75, -22.15], [134.5, -22.25], [133.97, -22.03], [133.82, -21.68], [133.47, -21.53]]]]}, "2023-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.47, -21.53], [133.25, -21.0], [133.47, -20.47], [133.82, -20.32], [133.85, -20.25], [133.75, -20.0], [133.85, -19.75], [133.75, -19.5], [133.97, -18.97], [134.5, -18.75], [135.03, -18.97], [135.18, -19.32], [135.25, -19.35], [135.5, -19.25], [135.75, -19.35], [136.0, -19.25], [136.25, -19.35], [136.5, -19.25], [137.03, -19.47], [137.18, -19.82], [137.53, -19.97], [137.75, -20.5], [137.65, -20.75], [137.75, -21.0], [137.65, -21.25], [137.75, -21.5], [137.53, -22.03], [137.0, -22.25], [136.75, -22.15], [136.5, -22.25], [136.25, -22.15], [136.0, -22.25], [135.5, -22.04], [135.0, -22.25], [134.75, -22.15], [134.5, -22.25], [133.97, -22.03], [133.82, -21.68], [133.47, -21.53]]]]}, "2023-07-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.47, -21.53], [133.25, -21.0], [133.47, -20.47], [133.82, -20.32], [133.85, -20.25], [133.75, -20.0], [133.85, -19.75], [133.75, -19.5], [133.97, -18.97], [134.5, -18.75], [135.03, -18.97], [135.18, -19.32], [135.25, -19.35], [135.5, -19.25], [135.75, -19.35], [136.0, -19.25], [136.25, -19.35], [136.5, -19.25], [137.03, -19.47], [137.18, -19.82], [137.53, -19.97], [137.75, -20.5], [137.65, -20.75], [137.75, -21.0], [137.65, -21.25], [137.75, -21.5], [137.53, -22.03], [137.0, -22.25], [136.75, -22.15], [136.5, -22.25], [136.25, -22.15], [136.0, -22.25], [135.5, -22.04], [135.0, -22.25], [134.75, -22.15], [134.5, -22.25], [133.97, -22.03], [133.82, -21.68], [133.47, -21.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.632806137031594}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.474315223782228}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.817444292351126, 12.552476623961184, 13.113560371422352]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.241471239564135, 11.127536458920872, 11.89530718512367]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.247039517226004, -4.80278956846536, -4.37311658565532]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.789236939122588, -5.632806137031594, -5.149385562698285]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3698782445529494, -1.5841712140358848, -1.4863400574709178]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5520664071546006, -1.882448977873211, -1.7724742035686625]}}