{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:51:52.391879", "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-Mar-30_to_2023-Apr-01_150.5_-28.5"}, "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": 2023030000982}, "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": "March 30 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 01 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": 51097.28949724164}, "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": -28.5}, "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": 150.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "150.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 149.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 151.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -31.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -28.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[148.97, -28.97], [149.32, -28.82], [149.47, -28.47], [149.82, -28.32], [149.97, -27.97], [150.5, -27.75], [150.75, -27.85], [150.82, -27.82], [150.97, -27.47], [151.5, -27.25], [152.03, -27.47], [152.25, -28.0], [152.15, -28.25], [152.25, -28.5], [152.15, -28.75], [152.25, -29.0], [152.03, -29.53], [151.68, -29.68], [151.54, -30.0], [151.75, -30.5], [151.65, -30.75], [151.75, -31.0], [151.53, -31.53], [151.0, -31.75], [150.75, -31.65], [150.5, -31.75], [149.97, -31.53], [149.82, -31.18], [149.47, -31.03], [149.25, -30.5], [149.35, -30.25], [149.32, -30.18], [148.97, -30.03], [148.75, -29.5], [148.97, -28.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.97, -30.03], [148.75, -29.5], [148.97, -28.97], [149.32, -28.82], [149.47, -28.47], [149.82, -28.32], [149.97, -27.97], [150.5, -27.75], [150.75, -27.85], [150.82, -27.82], [150.97, -27.47], [151.5, -27.25], [152.03, -27.47], [152.25, -28.0], [152.15, -28.25], [152.25, -28.5], [152.15, -28.75], [152.25, -29.0], [152.03, -29.53], [151.68, -29.68], [151.54, -30.0], [151.75, -30.5], [151.65, -30.75], [151.75, -31.0], [151.53, -31.53], [151.0, -31.75], [150.75, -31.65], [150.5, -31.75], [149.97, -31.53], [149.82, -31.18], [149.47, -31.03], [149.25, -30.5], [149.35, -30.25], [149.32, -30.18], [148.97, -30.03]]]]}, "2023-03-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.97, -30.03], [148.75, -29.5], [148.97, -28.97], [149.32, -28.82], [149.47, -28.47], [149.82, -28.32], [149.97, -27.97], [150.5, -27.75], [150.75, -27.85], [150.82, -27.82], [150.97, -27.47], [151.5, -27.25], [152.03, -27.47], [152.25, -28.0], [152.15, -28.25], [152.25, -28.5], [152.15, -28.75], [152.25, -29.0], [152.03, -29.53], [151.68, -29.68], [151.54, -30.0], [151.75, -30.5], [151.65, -30.75], [151.75, -31.0], [151.53, -31.53], [151.0, -31.75], [150.75, -31.65], [150.5, -31.75], [149.97, -31.53], [149.82, -31.18], [149.47, -31.03], [149.25, -30.5], [149.35, -30.25], [149.32, -30.18], [148.97, -30.03]]]]}, "2023-04-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.97, -30.03], [148.75, -29.5], [148.97, -28.97], [149.32, -28.82], [149.47, -28.47], [149.82, -28.32], [149.97, -27.97], [150.5, -27.75], [150.75, -27.85], [150.82, -27.82], [150.97, -27.47], [151.5, -27.25], [152.03, -27.47], [152.25, -28.0], [152.15, -28.25], [152.25, -28.5], [152.15, -28.75], [152.25, -29.0], [152.03, -29.53], [151.68, -29.68], [151.54, -30.0], [151.75, -30.5], [151.65, -30.75], [151.75, -31.0], [151.53, -31.53], [151.0, -31.75], [150.75, -31.65], [150.5, -31.75], [149.97, -31.53], [149.82, -31.18], [149.47, -31.03], [149.25, -30.5], [149.35, -30.25], [149.32, -30.18], [148.97, -30.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.865901228199107}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.9947610264999835}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.126626909259926, 16.359586780118093, 16.027388278514877]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.53150748378215, 12.723501703590841, 13.787178140120773]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.139374132945091, -3.827452749923542, -4.017456196631318]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.700779938411074, -4.571329122550139, -5.865901228199107]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.87241071882518, -1.7272405921308716, -1.8251522689960087]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0738746824701604, -1.9811743072894485, -2.4943536966777637]}}