{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:33.785539", "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-Jan-03_to_2023-Jan-13_12.0_3.5"}, "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": 2023010001772}, "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 03 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 13 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 11}, "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": 55512.573103629635}, "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": ["Cameroon"]}, "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": 3.5}, "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": 12.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "12.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 11.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 13.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 3.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[11.47, 2.47], [11.32, 2.82], [10.97, 2.97], [10.75, 3.5], [10.85, 3.75], [10.82, 3.82], [10.47, 3.97], [10.25, 4.5], [10.47, 5.03], [11.0, 5.25], [11.25, 5.15], [11.5, 5.25], [11.75, 5.15], [12.0, 5.25], [12.25, 5.15], [12.5, 5.25], [12.75, 5.15], [13.0, 5.25], [13.53, 5.03], [13.68, 4.68], [14.03, 4.53], [14.25, 4.0], [14.15, 3.75], [14.25, 3.5], [14.03, 2.97], [13.68, 2.82], [13.53, 2.47], [13.0, 2.25], [12.75, 2.35], [12.5, 2.25], [12.25, 2.35], [12.0, 2.25], [11.47, 2.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 4.0], [10.85, 4.25], [10.75, 4.5], [10.97, 5.03], [11.5, 5.25], [12.03, 5.03], [12.18, 4.68], [12.53, 4.53], [12.75, 4.0], [12.65, 3.75], [12.75, 3.5], [12.65, 3.25], [12.75, 3.0], [12.53, 2.47], [12.0, 2.25], [11.47, 2.47], [11.32, 2.82], [10.97, 2.97], [10.75, 3.5], [10.85, 3.75], [10.75, 4.0]]]]}, "2023-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 4.0], [10.85, 4.25], [10.75, 4.5], [10.97, 5.03], [11.5, 5.25], [12.03, 5.03], [12.18, 4.68], [12.25, 4.65], [12.5, 4.75], [13.03, 4.53], [13.18, 4.18], [13.53, 4.03], [13.75, 3.5], [13.65, 3.25], [13.75, 3.0], [13.53, 2.47], [13.0, 2.25], [12.75, 2.35], [12.5, 2.25], [12.25, 2.35], [12.0, 2.25], [11.47, 2.47], [11.32, 2.82], [10.97, 2.97], [10.75, 3.5], [10.85, 3.75], [10.75, 4.0]]]]}, "2023-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 4.0], [10.85, 4.25], [10.75, 4.5], [10.97, 5.03], [11.5, 5.25], [12.0, 5.04], [12.5, 5.25], [12.75, 5.15], [13.0, 5.25], [13.53, 5.03], [13.68, 4.68], [14.03, 4.53], [14.25, 4.0], [14.15, 3.75], [14.25, 3.5], [14.03, 2.97], [13.68, 2.82], [13.53, 2.47], [13.0, 2.25], [12.75, 2.35], [12.5, 2.25], [12.25, 2.35], [12.0, 2.25], [11.47, 2.47], [11.32, 2.82], [10.97, 2.97], [10.75, 3.5], [10.85, 3.75], [10.75, 4.0]]]]}, "2023-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.25, 4.0], [11.47, 4.53], [11.82, 4.68], [11.97, 5.03], [12.5, 5.25], [12.75, 5.15], [13.0, 5.25], [13.53, 5.03], [13.68, 4.68], [14.03, 4.53], [14.25, 4.0], [14.15, 3.75], [14.25, 3.5], [14.03, 2.97], [13.68, 2.82], [13.53, 2.47], [13.0, 2.25], [12.75, 2.35], [12.5, 2.25], [11.97, 2.47], [11.82, 2.82], [11.47, 2.97], [11.25, 3.5], [11.35, 3.75], [11.25, 4.0]]]]}, "2023-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.47, 3.97], [10.25, 4.5], [10.47, 5.03], [11.0, 5.25], [11.25, 5.15], [11.5, 5.25], [11.75, 5.15], [12.0, 5.25], [12.25, 5.15], [12.5, 5.25], [12.75, 5.15], [13.0, 5.25], [13.53, 5.03], [13.68, 4.68], [14.03, 4.53], [14.25, 4.0], [14.15, 3.75], [14.25, 3.5], [14.03, 2.97], [13.5, 2.75], [13.25, 2.85], [13.18, 2.82], [13.03, 2.47], [12.5, 2.25], [12.25, 2.35], [12.0, 2.25], [11.47, 2.47], [11.25, 3.0], [11.35, 3.25], [11.32, 3.32], [10.97, 3.47], [10.82, 3.82], [10.47, 3.97]]]]}, "2023-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.47, 3.97], [10.25, 4.5], [10.47, 5.03], [11.0, 5.25], [11.25, 5.15], [11.5, 5.25], [11.75, 5.15], [12.0, 5.25], [12.25, 5.15], [12.5, 5.25], [13.03, 5.03], [13.25, 4.5], [13.13, 4.2], [13.53, 4.03], [13.75, 3.5], [13.53, 2.97], [13.18, 2.82], [13.03, 2.47], [12.5, 2.25], [12.25, 2.35], [12.0, 2.25], [11.47, 2.47], [11.25, 3.0], [11.35, 3.25], [11.32, 3.32], [10.97, 3.47], [10.82, 3.82], [10.47, 3.97]]]]}, "2023-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.47, 3.97], [10.25, 4.5], [10.47, 5.03], [11.0, 5.25], [11.25, 5.15], [11.5, 5.25], [11.75, 5.15], [12.0, 5.25], [12.25, 5.15], [12.5, 5.25], [13.03, 5.03], [13.25, 4.5], [13.15, 4.25], [13.18, 4.18], [13.53, 4.03], [13.75, 3.5], [13.53, 2.97], [13.0, 2.75], [12.75, 2.85], [12.68, 2.82], [12.53, 2.47], [12.0, 2.25], [11.47, 2.47], [11.25, 3.0], [11.35, 3.25], [11.32, 3.32], [10.97, 3.47], [10.82, 3.82], [10.47, 3.97]]]]}, "2023-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.97, 3.47], [10.75, 4.0], [10.97, 4.53], [11.5, 4.75], [11.75, 4.65], [12.0, 4.75], [12.25, 4.65], [12.5, 4.75], [13.03, 4.53], [13.25, 4.0], [13.15, 3.75], [13.25, 3.5], [13.03, 2.97], [12.5, 2.75], [12.25, 2.85], [12.0, 2.75], [11.47, 2.97], [11.32, 3.32], [10.97, 3.47]]]]}, "2023-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.25, 4.0], [11.47, 4.53], [12.0, 4.75], [12.25, 4.65], [12.5, 4.75], [13.03, 4.53], [13.25, 4.0], [13.15, 3.75], [13.25, 3.5], [13.03, 2.97], [12.5, 2.75], [12.25, 2.85], [12.0, 2.75], [11.47, 2.97], [11.25, 3.5], [11.35, 3.75], [11.25, 4.0]]]]}, "2023-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.25, 4.0], [11.47, 4.53], [12.0, 4.75], [12.53, 4.53], [12.68, 4.18], [13.03, 4.03], [13.25, 3.5], [13.03, 2.97], [12.5, 2.75], [12.25, 2.85], [12.0, 2.75], [11.47, 2.97], [11.25, 3.5], [11.35, 3.75], [11.25, 4.0]]]]}, "2023-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.47, 4.03], [12.0, 4.25], [12.53, 4.03], [12.75, 3.5], [12.53, 2.97], [12.0, 2.75], [11.47, 2.97], [11.25, 3.5], [11.47, 4.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.8575389414126562}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.4283839906348763}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.714603932143632, 25.664745059835525, 25.539590014880446, 25.286341062447946, 25.736069767218055, 25.833604185741137, 26.00108505643169, 25.52640873473183, 25.523818464089402, 25.588335722925137, 25.602658255002723]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.172197004339864, 27.508537000936087, 27.210925322683124, 25.927717461283635, 27.548199397458347, 27.416135113385792, 27.61803970437819, 25.70986168908115, 25.81914883602053, 25.83316000870508, 25.602658255002723]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.2744579430218625, 1.4777246412559542, 1.422645193466881, 1.305635435855886, 1.463105088120166, 1.378718022263456, 1.5465271371722182, 1.4488314959894524, 1.4860233978578492, 1.5016118106760057, 1.5127313961389746]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.5214261444581894, 1.8575389414126562, 1.747308137989478, 1.5025832907238055, 1.8333007662328669, 1.680660479796586, 1.7527557905895605, 1.5832002282355688, 1.614385587739605, 1.5947299636155776, 1.5127313961389746]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5644652191933022, 1.7440488422047233, 1.556964707145974, 1.3522323330703878, 1.5192822336318548, 1.4227814519873816, 1.4970425897038573, 1.3457669831158277, 1.2887794296900852, 1.3432855473459668, 1.3659938292448692]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.002306443601644, 2.3751564186379115, 1.9234795764793224, 1.528010481696994, 1.7891344331231565, 1.6876899179025497, 1.6830062691090044, 1.5167654975314644, 1.4145201860862286, 1.4237649476911136, 1.3659938292448692]}}