{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:18.409750", "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-May-27_to_2023-May-30_142.5_-15.5"}, "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": 2023050000828}, "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": "May 27 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 30 2023"}, "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": 50537.449198921124}, "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": -15.5}, "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": 142.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "142.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 141.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 144.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[141.5, -13.75], [141.75, -13.85], [142.0, -13.75], [142.53, -13.97], [142.68, -14.32], [143.03, -14.47], [143.25, -15.0], [143.15, -15.25], [143.18, -15.32], [143.25, -15.35], [143.5, -15.25], [144.03, -15.47], [144.18, -15.82], [144.53, -15.97], [144.75, -16.5], [144.65, -16.75], [144.75, -17.0], [144.53, -17.53], [144.0, -17.75], [143.75, -17.65], [143.5, -17.75], [143.25, -17.65], [143.0, -17.75], [142.47, -17.53], [142.25, -17.0], [142.35, -16.75], [142.32, -16.68], [142.25, -16.65], [142.0, -16.75], [141.47, -16.53], [141.32, -16.18], [140.97, -16.03], [140.75, -15.5], [140.96, -15.0], [140.75, -14.5], [140.97, -13.97], [141.5, -13.75]]]]}}, "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": {"2023-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.97, -15.03], [140.75, -14.5], [140.97, -13.97], [141.5, -13.75], [141.75, -13.85], [142.0, -13.75], [142.53, -13.97], [142.68, -14.32], [143.03, -14.47], [143.25, -15.0], [143.15, -15.25], [143.18, -15.32], [143.53, -15.47], [143.68, -15.82], [143.75, -15.85], [144.0, -15.75], [144.53, -15.97], [144.75, -16.5], [144.65, -16.75], [144.75, -17.0], [144.53, -17.53], [144.0, -17.75], [143.75, -17.65], [143.5, -17.75], [142.97, -17.53], [142.82, -17.18], [142.47, -17.03], [142.32, -16.68], [141.97, -16.53], [141.82, -16.18], [141.47, -16.03], [141.25, -15.5], [141.35, -15.25], [141.32, -15.18], [140.97, -15.03]]]]}, "2023-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.75, -14.5], [140.97, -13.97], [141.5, -13.75], [141.75, -13.85], [142.0, -13.75], [142.53, -13.97], [142.68, -14.32], [143.03, -14.47], [143.25, -15.0], [143.15, -15.25], [143.18, -15.32], [143.25, -15.35], [143.5, -15.25], [144.03, -15.47], [144.18, -15.82], [144.53, -15.97], [144.75, -16.5], [144.65, -16.75], [144.75, -17.0], [144.53, -17.53], [144.0, -17.75], [143.75, -17.65], [143.5, -17.75], [143.25, -17.65], [143.0, -17.75], [142.47, -17.53], [142.25, -17.0], [142.35, -16.75], [142.32, -16.68], [142.25, -16.65], [142.0, -16.75], [141.47, -16.53], [141.32, -16.18], [140.97, -16.03], [140.75, -15.5], [140.96, -15.0], [140.75, -14.5]]]]}, "2023-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.75, -14.5], [140.97, -13.97], [141.5, -13.75], [141.75, -13.85], [142.0, -13.75], [142.53, -13.97], [142.68, -14.32], [143.03, -14.47], [143.25, -15.0], [143.15, -15.25], [143.18, -15.32], [143.25, -15.35], [143.5, -15.25], [144.03, -15.47], [144.18, -15.82], [144.53, -15.97], [144.75, -16.5], [144.65, -16.75], [144.75, -17.0], [144.53, -17.53], [144.0, -17.75], [143.75, -17.65], [143.5, -17.75], [143.25, -17.65], [143.0, -17.75], [142.47, -17.53], [142.25, -17.0], [142.35, -16.75], [142.32, -16.68], [142.25, -16.65], [142.0, -16.75], [141.47, -16.53], [141.32, -16.18], [140.97, -16.03], [140.75, -15.5], [140.96, -15.0], [140.75, -14.5]]]]}, "2023-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.75, -14.5], [140.97, -13.97], [141.5, -13.75], [141.75, -13.85], [142.0, -13.75], [142.53, -13.97], [142.68, -14.32], [143.03, -14.47], [143.25, -15.0], [143.15, -15.25], [143.18, -15.32], [143.25, -15.35], [143.5, -15.25], [144.03, -15.47], [144.18, -15.82], [144.53, -15.97], [144.75, -16.5], [144.65, -16.75], [144.75, -17.0], [144.53, -17.53], [144.0, -17.75], [143.75, -17.65], [143.5, -17.75], [143.25, -17.65], [143.0, -17.75], [142.47, -17.53], [142.25, -17.0], [142.35, -16.75], [142.32, -16.68], [142.25, -16.65], [142.0, -16.75], [141.47, -16.53], [141.32, -16.18], [140.97, -16.03], [140.75, -15.5], [140.96, -15.0], [140.75, -14.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.237693849019649}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.9740677653065886}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.188180407194977, 22.234435445035047, 21.1738546819833, 21.692708458419588]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.977216120415164, 21.337856137896836, 20.009099430130107, 20.29589336011594]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6546215508106195, -2.5467658857076536, -3.5853575047503172, -3.03813071349947]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.0101304801667084, -2.9570259355548387, -4.237693849019649, -3.76988929515619]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4569181836670648, -1.4403757685516418, -1.9768621969905624, -1.6346145167059627]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.67720408618715, -1.7234679562941384, -2.253134108722045, -1.775379335167729]}}