{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:08.906916", "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": "2022-Jun-30_to_2022-Jul-03_135.0_-37.0"}, "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": 2022060001348}, "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": "June 30 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 03 2022"}, "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": 91114.99848714835}, "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": -37.0}, "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": 135.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "135.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 132.5}, "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": -38.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -35.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[132.32, -36.82], [132.47, -36.47], [132.82, -36.32], [132.85, -36.25], [132.75, -36.0], [132.85, -35.75], [132.75, -35.5], [132.97, -34.97], [133.32, -34.82], [133.47, -34.47], [134.0, -34.25], [134.53, -34.47], [134.68, -34.82], [135.03, -34.97], [135.18, -35.32], [135.53, -35.47], [135.75, -36.0], [135.65, -36.25], [135.75, -36.5], [135.65, -36.75], [135.68, -36.82], [136.03, -36.97], [136.18, -37.32], [136.25, -37.35], [136.5, -37.25], [137.03, -37.47], [137.18, -37.82], [137.53, -37.97], [137.75, -38.5], [137.53, -39.03], [137.0, -39.25], [136.75, -39.15], [136.5, -39.25], [136.25, -39.15], [136.0, -39.25], [135.75, -39.15], [135.5, -39.25], [135.25, -39.15], [135.0, -39.25], [134.47, -39.03], [134.32, -38.68], [134.25, -38.65], [134.0, -38.75], [133.75, -38.65], [133.5, -38.75], [133.25, -38.65], [133.0, -38.75], [132.47, -38.53], [132.32, -38.18], [131.97, -38.03], [131.75, -37.5], [131.97, -36.97], [132.32, -36.82]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.97, -38.03], [131.75, -37.5], [131.97, -36.97], [132.32, -36.82], [132.47, -36.47], [133.0, -36.25], [133.25, -36.35], [133.5, -36.25], [133.75, -36.35], [134.0, -36.25], [134.25, -36.35], [134.5, -36.25], [134.75, -36.35], [135.0, -36.25], [135.53, -36.47], [135.68, -36.82], [136.03, -36.97], [136.18, -37.32], [136.25, -37.35], [136.5, -37.25], [137.03, -37.47], [137.18, -37.82], [137.53, -37.97], [137.75, -38.5], [137.53, -39.03], [137.0, -39.25], [136.75, -39.15], [136.5, -39.25], [136.25, -39.15], [136.0, -39.25], [135.75, -39.15], [135.5, -39.25], [135.25, -39.15], [135.0, -39.25], [134.47, -39.03], [134.32, -38.68], [134.25, -38.65], [134.0, -38.75], [133.75, -38.65], [133.5, -38.75], [133.25, -38.65], [133.0, -38.75], [132.47, -38.53], [132.32, -38.18], [131.97, -38.03]]]]}, "2022-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.97, -38.03], [131.75, -37.5], [131.97, -36.97], [132.32, -36.82], [132.47, -36.47], [132.82, -36.32], [132.85, -36.25], [132.75, -36.0], [132.85, -35.75], [132.75, -35.5], [132.97, -34.97], [133.32, -34.82], [133.47, -34.47], [134.0, -34.25], [134.53, -34.47], [134.68, -34.82], [135.03, -34.97], [135.18, -35.32], [135.53, -35.47], [135.75, -36.0], [135.65, -36.25], [135.75, -36.5], [135.65, -36.75], [135.68, -36.82], [136.03, -36.97], [136.18, -37.32], [136.25, -37.35], [136.5, -37.25], [137.03, -37.47], [137.18, -37.82], [137.53, -37.97], [137.75, -38.5], [137.53, -39.03], [137.0, -39.25], [136.75, -39.15], [136.5, -39.25], [136.25, -39.15], [136.0, -39.25], [135.75, -39.15], [135.5, -39.25], [135.25, -39.15], [135.0, -39.25], [134.47, -39.03], [134.32, -38.68], [134.25, -38.65], [134.0, -38.75], [133.75, -38.65], [133.5, -38.75], [133.25, -38.65], [133.0, -38.75], [132.47, -38.53], [132.32, -38.18], [131.97, -38.03]]]]}, 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[131.97, -38.03]]]]}, "2022-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.75, -36.0], [132.85, -35.75], [132.75, -35.5], [132.97, -34.97], [133.32, -34.82], [133.47, -34.47], [134.0, -34.25], [134.53, -34.47], [134.68, -34.82], [135.03, -34.97], [135.18, -35.32], [135.53, -35.47], [135.75, -36.0], [135.65, -36.25], [135.75, -36.5], [135.65, -36.75], [135.75, -37.0], [135.53, -37.53], [135.0, -37.75], [134.75, -37.65], [134.5, -37.75], [134.25, -37.65], [134.0, -37.75], [133.47, -37.53], [133.32, -37.18], [132.97, -37.03], [132.75, -36.5], [132.85, -36.25], [132.75, -36.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.811195558096756}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0488348013149666}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.407359306972637, 11.495663648458958, 11.509723324945753, 12.334762975322292]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.532384536545521, 10.492985569764926, 11.056618395691373, 11.974199697812878]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9790639080507413, -2.162124831366458, -2.0906470981157943, -1.7825338838529547]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.403728370975216, -2.811195558096756, -2.406383868373723, -2.169879004155689]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.669307349462234, -1.7739721499527252, -1.7133155912613551, -1.4894630229433365]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0688517771137778, -2.2907401367892533, -1.9442692732268276, -1.7741278080560792]}}