{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:07.314745", "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-22_to_2023-Mar-25_25.5_6.5"}, "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": 2023030002260}, "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 22 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 25 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": "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": 61421.48400803999}, "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": ["Central African Republic", "Congo, The Democratic Republic of the", "South Sudan"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "Africa", "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": 6.5}, "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": 25.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "25.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 24.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 27.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 5.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 8.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[25.38, 7.2], [25.25, 7.5], [25.47, 8.03], [26.0, 8.25], [26.25, 8.15], [26.32, 8.18], [26.47, 8.53], [27.0, 8.75], [27.53, 8.53], [27.75, 8.0], [27.65, 7.75], [27.68, 7.68], [28.03, 7.53], [28.25, 7.0], [28.15, 6.75], [28.25, 6.5], [28.03, 5.97], [27.68, 5.82], [27.53, 5.47], [27.0, 5.25], [26.7, 5.38], [26.53, 4.97], [26.18, 4.82], [26.03, 4.47], [25.5, 4.25], [24.97, 4.47], [24.8, 4.88], [24.5, 4.75], [23.97, 4.97], [23.75, 5.5], [23.97, 6.03], [24.32, 6.18], [24.47, 6.53], [24.82, 6.68], [24.97, 7.03], [25.38, 7.2]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "N.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[25.25, 7.5], [25.47, 8.03], [26.0, 8.25], [26.53, 8.03], [26.75, 7.5], [26.53, 6.97], [26.13, 6.8], [26.25, 6.5], [26.03, 5.97], [25.5, 5.75], [24.97, 5.97], [24.75, 6.5], [24.97, 7.03], [25.38, 7.2], [25.25, 7.5]]]]}, "2023-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.47, 6.53], [24.82, 6.68], [24.97, 7.03], [25.38, 7.2], [25.25, 7.5], [25.47, 8.03], [26.0, 8.25], [26.25, 8.15], [26.32, 8.18], [26.47, 8.53], [27.0, 8.75], [27.53, 8.53], [27.75, 8.0], [27.65, 7.75], [27.68, 7.68], [28.03, 7.53], [28.25, 7.0], [28.15, 6.75], [28.25, 6.5], [28.03, 5.97], [27.68, 5.82], [27.53, 5.47], [27.0, 5.25], [26.7, 5.38], [26.53, 4.97], [26.18, 4.82], [26.03, 4.47], [25.5, 4.25], [24.97, 4.47], [24.8, 4.88], [24.5, 4.75], [23.97, 4.97], [23.75, 5.5], [23.97, 6.03], [24.32, 6.18], [24.47, 6.53]]]]}, "2023-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.47, 6.53], [24.82, 6.68], [24.97, 7.03], [25.38, 7.2], [25.25, 7.5], [25.47, 8.03], [26.0, 8.25], [26.25, 8.15], [26.32, 8.18], [26.47, 8.53], [27.0, 8.75], [27.53, 8.53], [27.75, 8.0], [27.65, 7.75], [27.68, 7.68], [28.03, 7.53], [28.25, 7.0], [28.15, 6.75], [28.25, 6.5], [28.03, 5.97], [27.68, 5.82], [27.53, 5.47], [27.0, 5.25], [26.7, 5.38], [26.53, 4.97], [26.18, 4.82], [26.03, 4.47], [25.5, 4.25], [24.97, 4.47], [24.8, 4.88], [24.5, 4.75], [23.97, 4.97], [23.75, 5.5], [23.97, 6.03], [24.32, 6.18], [24.47, 6.53]]]]}, "2023-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[24.47, 6.53], [24.82, 6.68], [24.97, 7.03], [25.5, 7.25], [25.75, 7.15], [25.82, 7.18], [25.85, 7.25], [25.75, 7.5], [25.97, 8.03], [26.32, 8.18], [26.47, 8.53], [27.0, 8.75], [27.53, 8.53], [27.75, 8.0], [27.65, 7.75], [27.68, 7.68], [28.03, 7.53], [28.25, 7.0], [28.15, 6.75], [28.25, 6.5], [28.03, 5.97], [27.68, 5.82], [27.53, 5.47], [27.0, 5.25], [26.7, 5.38], [26.53, 4.97], [26.18, 4.82], [26.03, 4.47], [25.5, 4.25], [24.97, 4.47], [24.8, 4.88], [24.5, 4.75], [23.97, 4.97], [23.75, 5.5], [23.97, 6.03], [24.32, 6.18], [24.47, 6.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.5867980034662423}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.603885642836911}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.6672184231208, 31.23536715781171, 31.414864235612185, 30.954175285322208]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [31.290674105875553, 32.91302526325944, 32.778278954977566, 33.21054623307981]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.1734792805588654, 2.6283523150754577, 2.8164894911275495, 2.399643659361773]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.3366131723124113, 3.10721588329983, 3.5867980034662423, 2.9753248802737744]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2244993139423104, 1.514179262600673, 1.6570544588702465, 1.4342045624279254]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2623240080875067, 1.8948085103678034, 2.235068080832084, 1.6593469891156853]}}