{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-20 10:52:25.180443", "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": "2026-Mar-25_to_2026-Mar-29_11.5_9.5"}, "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": 2026030002369}, "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 25 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 29 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 60907.671748531815}, "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": ["Nigeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "Western-Africa"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": 9.5}, "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": 11.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "11.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 9.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 13.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 11.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.97, 10.53], [11.38, 10.7], [11.25, 11.0], [11.47, 11.53], [12.0, 11.75], [12.53, 11.53], [12.68, 11.18], [13.0, 11.04], [13.5, 11.25], [14.03, 11.03], [14.25, 10.5], [14.03, 9.97], [13.5, 9.75], [13.07, 9.93], [13.25, 9.5], [13.03, 8.97], [12.68, 8.82], [12.53, 8.47], [12.0, 8.25], [11.47, 8.47], [11.32, 8.82], [10.97, 8.97], [10.75, 9.5], [10.85, 9.75], [10.75, 10.0], [10.97, 10.53]]]]}, "2026-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.47, 10.53], [10.0, 10.75], [10.5, 10.54], [11.0, 10.75], [11.25, 10.65], [11.32, 10.68], [11.35, 10.75], [11.25, 11.0], [11.47, 11.53], [12.0, 11.75], [12.53, 11.53], [12.68, 11.18], [12.75, 11.15], [13.0, 11.25], [13.25, 11.15], [13.5, 11.25], [14.03, 11.03], [14.25, 10.5], [14.03, 9.97], [13.63, 9.8], [13.75, 9.5], [13.53, 8.97], [13.0, 8.75], [12.75, 8.85], [12.68, 8.82], [12.53, 8.47], [12.0, 8.25], [11.5, 8.46], [11.0, 8.25], [10.47, 8.47], [10.32, 8.82], [10.25, 8.85], [10.0, 8.75], [9.47, 8.97], [9.25, 9.5], [9.35, 9.75], [9.25, 10.0], [9.47, 10.53]]]]}, "2026-03-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.0, 10.75], [10.5, 10.54], [11.0, 10.75], [11.25, 10.65], [11.32, 10.68], [11.35, 10.75], [11.25, 11.0], [11.47, 11.53], [12.0, 11.75], [12.53, 11.53], [12.68, 11.18], [12.75, 11.15], [13.0, 11.25], [13.25, 11.15], [13.5, 11.25], [14.03, 11.03], [14.25, 10.5], [14.03, 9.97], [13.63, 9.8], [13.75, 9.5], [13.53, 8.97], [13.0, 8.75], [12.75, 8.85], [12.68, 8.82], [12.53, 8.47], [12.0, 8.25], [11.5, 8.46], [11.0, 8.25], [10.47, 8.47], [10.32, 8.82], [10.25, 8.85], [10.0, 8.75], [9.75, 8.85], [9.5, 8.75], [8.97, 8.97], [8.75, 9.5], [8.97, 10.03], [9.32, 10.18], [9.47, 10.53], [10.0, 10.75]]]]}, "2026-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.0, 10.75], [10.5, 10.54], [11.0, 10.75], [11.25, 10.65], [11.32, 10.68], [11.35, 10.75], [11.25, 11.0], [11.47, 11.53], [12.0, 11.75], [12.53, 11.53], [12.68, 11.18], [12.75, 11.15], [13.0, 11.25], [13.25, 11.15], [13.5, 11.25], [14.03, 11.03], [14.25, 10.5], [14.03, 9.97], [13.63, 9.8], [13.75, 9.5], [13.53, 8.97], [13.0, 8.75], [12.75, 8.85], [12.68, 8.82], [12.53, 8.47], [12.0, 8.25], [11.5, 8.46], [11.0, 8.25], [10.47, 8.47], [10.32, 8.82], [10.25, 8.85], [10.0, 8.75], [9.75, 8.85], [9.5, 8.75], [8.97, 8.97], [8.75, 9.5], [8.97, 10.03], [9.32, 10.18], [9.47, 10.53], [10.0, 10.75]]]]}, "2026-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.0, 10.75], [10.5, 10.54], [11.0, 10.75], [11.25, 10.65], [11.38, 10.7], [11.25, 11.0], [11.47, 11.53], [12.0, 11.75], [12.53, 11.53], [12.68, 11.18], [12.75, 11.15], [13.0, 11.25], [13.53, 11.03], [13.75, 10.5], [13.54, 10.0], [13.75, 9.5], [13.53, 8.97], [13.0, 8.75], [12.75, 8.85], [12.5, 8.75], [12.25, 8.85], [12.0, 8.75], [11.75, 8.85], [11.5, 8.75], [11.25, 8.85], [11.0, 8.75], [10.75, 8.85], [10.5, 8.75], [10.25, 8.85], [10.0, 8.75], [9.75, 8.85], [9.5, 8.75], [8.97, 8.97], [8.75, 9.5], [8.97, 10.03], [9.32, 10.18], [9.47, 10.53], [10.0, 10.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.8443601699038936}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.9144425153753948}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [33.23979339599606, 33.33484126308514, 33.3130078633626, 33.708946228027344, 33.419197845458996]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [34.605200703938806, 34.95369491577151, 35.29056320190432, 35.19361012776693, 34.99100774129232]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.7821369706154329, 1.7858441527944011, 1.891670001759809, 2.219823588439593, 1.7710853192518168]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.503888742476704, 2.5920972585836353, 2.610670577665701, 2.8443601699038936, 2.7488450087557794]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3329480867361658, 1.4696612982000932, 1.691950759198713, 2.1064504703201896, 1.7484999702154793]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7177516688179535, 1.9213632129932152, 2.3342461378985657, 2.8732319421497277, 2.5673829000870247]}}