{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:25:13.817973", "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": "2021-Apr-27_to_2021-May-03_144.0_-16.5"}, "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": 2021040001087}, "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": "April 27 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 03 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 62408.60002802513}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Australia"]}, "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": -16.5}, "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": 144.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "144.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 141.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 144.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.25, -15.0], [141.47, -14.47], [142.0, -14.25], [142.25, -14.35], [142.5, -14.25], [142.75, -14.35], [143.0, -14.25], [143.25, -14.35], [143.5, -14.25], [144.03, -14.47], [144.18, -14.82], [144.53, -14.97], [144.68, -15.32], [145.03, -15.47], [145.25, -16.0], [145.15, -16.25], [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], [143.75, -17.65], [143.5, -17.75], [142.97, -17.53], [142.75, -17.0], [142.85, -16.75], [142.75, -16.5], [142.88, -16.2], [142.75, -16.15], [142.5, -16.25], [141.97, -16.03], [141.82, -15.68], [141.47, -15.53], [141.25, -15.0]]]]}, "2021-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.0, -14.25], [142.25, -14.35], [142.5, -14.25], [142.75, -14.35], [143.0, -14.25], [143.25, -14.35], [143.5, -14.25], [144.03, -14.47], [144.18, -14.82], [144.53, -14.97], [144.68, -15.32], [145.03, -15.47], [145.25, -16.0], [145.15, -16.25], [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], [143.75, -17.65], [143.5, -17.75], [142.97, -17.53], [142.82, -17.18], [142.75, -17.15], [142.5, -17.25], [141.97, -17.03], [141.75, -16.5], [141.85, -16.25], [141.8, -16.12], [141.5, -16.25], [140.97, -16.03], [140.75, -15.5], [140.97, -14.97], [141.32, -14.82], [141.47, -14.47], [142.0, -14.25]]]]}, "2021-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.0, -14.25], [142.25, -14.35], [142.5, -14.25], [142.75, -14.35], [143.0, -14.25], [143.25, -14.35], [143.5, -14.25], [144.03, -14.47], [144.18, -14.82], [144.53, -14.97], [144.68, -15.32], [145.03, -15.47], [145.25, -16.0], [145.15, -16.25], [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], [143.75, -17.65], [143.5, -17.75], [142.97, -17.53], [142.82, -17.18], [142.75, -17.15], [142.5, -17.25], [141.97, -17.03], [141.75, -16.5], [141.85, -16.25], [141.8, -16.12], [141.5, -16.25], [140.97, -16.03], [140.75, -15.5], [140.97, -14.97], [141.32, -14.82], [141.47, -14.47], [142.0, -14.25]]]]}, "2021-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.97, -16.03], [140.75, -15.5], [140.97, -14.97], [141.5, -14.75], [142.03, -14.97], [142.2, -15.37], [142.5, -15.25], [142.75, -15.35], [143.0, -15.25], [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], [142.97, -17.53], [142.82, -17.18], [142.75, -17.15], [142.5, -17.25], [141.97, -17.03], [141.75, -16.5], [141.85, -16.25], [141.8, -16.12], [141.5, -16.25], [140.97, -16.03]]]]}, "2021-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.53, -15.97], [144.75, -16.5], [144.53, -17.03], [144.18, -17.18], [144.03, -17.53], [143.5, -17.75], [142.97, -17.53], [142.75, -17.0], [142.97, -16.47], [143.32, -16.32], [143.47, -15.97], [144.0, -15.75], 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anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0072062137086255}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.10392113368431, 24.27877356528154, 24.149144306669882, 24.686844910524144, 24.783394328390443, 25.01376434998673, 25.39512871374984]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.358811582154033, 22.45915618020689, 21.700155206645036, 23.970587024992653, 24.331400990226655, 24.359326250319214, 25.39512871374984]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9559353662900434, -2.0279264902986176, -2.098006661814471, -1.996267465082326, -1.8567547294280757, -1.6304852131326015, -1.7485176466314556]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.358184929363688, -2.630090249913337, -2.740805096386225, -2.2623261187262074, -2.1373962814117817, -1.709847710213694, -1.7485176466314556]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.514761028573683, -1.5127268288538964, -1.5842393789855849, -1.3750050282090618, -1.3098572712491314, -1.2267272248588665, -1.3271295668318537]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9503243885605088, -1.7344361344203028, -1.9403930697128648, -1.454530609967101, -1.3456081821066712, -1.2475638484937985, -1.3271295668318537]}}