{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:00.064356", "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-Jan-12_to_2024-Jan-15_144.5_-17.0"}, "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": 2024010000350}, "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": "January 12 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 15 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": 53322.352543627574}, "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": -17.0}, "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": 144.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "144.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 142.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 144.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[145.25, -16.5], [145.15, -16.75], [145.25, -17.0], [145.15, -17.25], [145.25, -17.5], [145.03, -18.03], [144.5, -18.25], [144.25, -18.15], [144.0, -18.25], [143.75, -18.15], [143.5, -18.25], [142.97, -18.03], [142.82, -17.68], [142.47, -17.53], [142.32, -17.18], [141.97, -17.03], [141.82, -16.68], [141.47, -16.53], [141.25, -16.0], [141.47, -15.47], [142.0, -15.25], [142.25, -15.35], [142.32, -15.32], [142.47, -14.97], [143.0, -14.75], [143.53, -14.97], [143.68, -15.32], [143.75, -15.35], [144.0, -15.25], [144.53, -15.47], [144.68, -15.82], [145.03, -15.97], [145.25, -16.5]]]]}}, "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": {"2024-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.97, -15.97], [144.5, -15.75], [145.03, -15.97], [145.25, -16.5], [145.15, -16.75], [145.25, -17.0], [145.03, -17.53], [144.5, -17.75], [144.25, -17.65], [144.0, -17.75], [143.47, -17.53], [143.25, -17.0], [143.47, -16.47], [143.82, -16.32], [143.97, -15.97]]]]}, "2024-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.47, -16.53], [141.25, -16.0], [141.47, -15.47], [142.0, -15.25], [142.25, -15.35], [142.32, -15.32], [142.47, -14.97], [143.0, -14.75], [143.53, -14.97], [143.68, -15.32], [143.75, -15.35], [144.0, -15.25], [144.53, -15.47], [144.68, -15.82], [145.03, -15.97], [145.25, -16.5], [145.15, -16.75], [145.25, -17.0], [145.15, -17.25], [145.25, -17.5], [145.03, -18.03], [144.5, -18.25], [144.25, -18.15], [144.0, -18.25], [143.75, -18.15], [143.5, -18.25], [142.97, -18.03], [142.82, -17.68], [142.47, -17.53], [142.32, -17.18], [141.97, -17.03], [141.82, -16.68], [141.47, -16.53]]]]}, "2024-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.47, -16.53], [141.25, -16.0], [141.47, -15.47], [142.0, -15.25], [142.25, -15.35], [142.32, -15.32], [142.47, -14.97], [143.0, -14.75], [143.53, -14.97], [143.68, -15.32], [143.75, -15.35], [144.0, -15.25], [144.53, -15.47], [144.68, -15.82], [145.03, -15.97], [145.25, -16.5], [145.15, -16.75], [145.25, -17.0], [145.15, -17.25], [145.25, -17.5], [145.03, -18.03], [144.5, -18.25], [144.25, -18.15], [144.0, -18.25], [143.75, -18.15], [143.5, -18.25], [142.97, -18.03], [142.82, -17.68], [142.47, -17.53], [142.32, -17.18], [141.97, -17.03], [141.82, -16.68], [141.47, -16.53]]]]}, "2024-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.47, -16.53], [141.25, -16.0], [141.47, -15.47], [142.0, -15.25], [142.25, -15.35], [142.32, -15.32], [142.47, -14.97], [143.0, -14.75], [143.53, -14.97], [143.68, -15.32], [143.75, -15.35], [144.0, -15.25], [144.53, -15.47], [144.68, -15.82], [145.03, -15.97], [145.25, -16.5], [145.15, -16.75], [145.25, -17.0], [145.15, -17.25], [145.25, -17.5], [145.03, -18.03], [144.5, -18.25], [144.25, -18.15], [144.0, -18.25], [143.75, -18.15], [143.5, -18.25], [142.97, -18.03], [142.82, -17.68], [142.47, -17.53], [142.32, -17.18], [141.97, -17.03], [141.82, -16.68], [141.47, -16.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.402341102479852}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.457016331445853}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.24010085164292, 25.88072945579347, 25.626355731009312, 25.292056546419303]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.59962677658092, 24.52316879876213, 24.549220141692444, 23.934164217197917]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.146831733431005, -2.2406783412120825, -2.4460058992125653, -2.7360621869153854]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.3319112448958776, -2.564112156833744, -2.7184739843157786, -3.402341102479852]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3892089883509156, -1.3110755513716086, -1.4813855670781253, -1.6804307307637854]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4489662863172037, -1.456386410993617, -1.6189004254042736, -2.106632095690841]}}