{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:21.823076", "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-Dec-05_to_2024-Dec-09_134.5_-15.0"}, "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": 2024120000147}, "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": "December 05 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 09 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 122632.30613382818}, "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": -15.0}, "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": 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": 133.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 136.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[132.85, -15.25], [132.75, -15.0], [132.85, -14.75], [132.75, -14.5], [132.97, -13.97], [133.32, -13.82], [133.47, -13.47], [134.0, -13.25], [134.25, -13.35], [134.32, -13.32], [134.35, -13.25], [134.32, -13.18], [133.97, -13.03], [133.75, -12.5], [133.97, -11.97], [134.5, -11.75], [134.75, -11.85], [135.0, -11.75], [135.25, -11.85], [135.5, -11.75], [135.75, -11.85], [136.0, -11.75], [136.25, -11.85], [136.5, -11.75], [137.03, -11.97], [137.25, -12.5], [137.15, -12.75], [137.25, -13.0], [137.03, -13.53], [136.68, -13.68], [136.65, -13.75], [136.75, -14.0], [136.53, -14.53], [136.18, -14.68], [136.04, -15.0], [136.25, -15.5], [136.15, -15.75], [136.25, -16.0], [136.03, -16.53], [135.5, -16.75], [135.25, -16.65], [135.18, -16.68], [135.03, -17.03], [134.5, -17.25], [134.25, -17.15], [134.0, -17.25], [133.75, -17.15], [133.5, -17.25], [133.25, -17.15], [133.0, -17.25], [132.47, -17.03], [132.25, -16.5], [132.35, -16.25], [132.25, -16.0], [132.47, -15.47], [132.82, -15.32], [132.85, -15.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.25, -16.0], [132.47, -15.47], [132.82, -15.32], [132.85, -15.25], [132.75, -15.0], [132.85, -14.75], [132.75, -14.5], [132.97, -13.97], [133.32, -13.82], [133.47, -13.47], [134.0, -13.25], [134.25, -13.35], [134.32, -13.32], [134.35, -13.25], [134.32, -13.18], [133.97, -13.03], [133.75, -12.5], [133.97, -11.97], [134.5, -11.75], [134.75, -11.85], [135.0, -11.75], [135.25, -11.85], [135.5, -11.75], [135.75, -11.85], [136.0, -11.75], [136.25, -11.85], [136.5, -11.75], [137.03, -11.97], [137.25, -12.5], [137.15, -12.75], [137.25, -13.0], [137.03, -13.53], [136.68, -13.68], [136.65, -13.75], [136.75, -14.0], [136.53, -14.53], [136.18, -14.68], [136.04, -15.0], [136.25, -15.5], [136.15, -15.75], [136.25, -16.0], [136.03, -16.53], [135.5, -16.75], [135.25, -16.65], [135.18, -16.68], [135.03, -17.03], [134.5, -17.25], [134.25, -17.15], [134.0, -17.25], [133.75, -17.15], [133.5, -17.25], [133.25, -17.15], [133.0, -17.25], [132.47, -17.03], [132.25, -16.5], [132.35, -16.25], [132.25, -16.0]]]]}, "2024-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.25, -16.0], [132.47, -15.47], [132.82, -15.32], [132.85, -15.25], [132.75, -15.0], [132.85, -14.75], [132.75, -14.5], [132.97, -13.97], [133.32, -13.82], [133.47, -13.47], [134.0, -13.25], [134.25, -13.35], [134.32, -13.32], [134.35, -13.25], [134.32, -13.18], [133.97, -13.03], [133.75, -12.5], [133.97, -11.97], [134.5, -11.75], [134.75, -11.85], [135.0, -11.75], [135.25, -11.85], [135.5, -11.75], [135.75, -11.85], [136.0, -11.75], [136.25, -11.85], [136.5, -11.75], [137.03, -11.97], [137.25, -12.5], [137.15, -12.75], [137.25, -13.0], [137.03, -13.53], [136.68, -13.68], [136.65, -13.75], [136.75, -14.0], [136.53, -14.53], [136.18, -14.68], [136.04, -15.0], [136.25, -15.5], [136.15, -15.75], [136.25, -16.0], [136.03, -16.53], [135.5, -16.75], [135.25, -16.65], [135.18, -16.68], [135.03, -17.03], [134.5, -17.25], [134.25, -17.15], [134.0, -17.25], [133.75, -17.15], [133.5, -17.25], [133.25, -17.15], [133.0, -17.25], [132.47, -17.03], [132.25, -16.5], [132.35, -16.25], [132.25, -16.0]]]]}, "2024-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.25, -16.0], [132.47, -15.47], [132.82, -15.32], [132.85, -15.25], [132.75, -15.0], [132.85, -14.75], [132.75, -14.5], [132.97, -13.97], [133.32, -13.82], [133.47, -13.47], [134.0, -13.25], [134.25, -13.35], [134.32, -13.32], [134.35, -13.25], [134.32, -13.18], [133.97, -13.03], [133.75, -12.5], [133.97, -11.97], [134.5, -11.75], [134.75, -11.85], [135.0, -11.75], [135.25, -11.85], [135.5, -11.75], [135.75, -11.85], [136.0, -11.75], [136.25, -11.85], [136.5, -11.75], [137.03, -11.97], [137.25, -12.5], [137.15, -12.75], [137.25, -13.0], [137.03, -13.53], [136.68, -13.68], [136.65, -13.75], [136.75, -14.0], [136.53, -14.53], [136.18, -14.68], [136.04, -15.0], [136.25, -15.5], [136.15, -15.75], [136.25, -16.0], [136.03, -16.53], [135.5, -16.75], [135.25, -16.65], [135.18, -16.68], [135.03, -17.03], [134.5, -17.25], [134.25, -17.15], [134.0, -17.25], [133.75, -17.15], [133.5, -17.25], [133.25, -17.15], [133.0, -17.25], [132.47, -17.03], [132.25, -16.5], [132.35, -16.25], [132.25, -16.0]]]]}, "2024-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[134.0, -15.75], [133.47, -15.53], [133.25, -15.0], [133.47, -14.47], [134.0, -14.25], [134.25, -14.35], [134.5, -14.25], [135.03, -14.47], [135.25, -15.0], [135.03, -15.53], [134.5, -15.75], [134.25, -15.65], [134.0, -15.75]]]]}, "2024-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[134.0, -15.75], [133.47, -15.53], [133.25, -15.0], [133.47, -14.47], [134.0, -14.25], [134.25, -14.35], [134.5, -14.25], [135.03, -14.47], [135.25, -15.0], [135.03, -15.53], [134.5, -15.75], [134.25, -15.65], [134.0, -15.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.4728420727239495}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.378378378590207}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.563814184917703, 26.650451759400426, 27.62943609594339, 28.92058842976894, 28.60533421834316]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.768572743733728, 25.597802734375023, 26.30886357625326, 28.76474533081057, 28.579170481363974]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.1257334552545455, -4.037439381563049, -3.005861105833954, -2.954759818367023, -3.107071397754396]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.545090534781082, -5.4728420727239495, -4.203234012303653, -3.130481986731013, -3.1271702684387606]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7463140836221318, -2.279597076094486, -1.7195251226344874, -1.463956048800231, -1.565917880943429]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2301081652296233, -2.7419560163613363, -2.144579843949428, -1.4829539393858748, -1.6231166620149835]}}