{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:17:38.804406", "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": "2022-Feb-04_to_2022-Feb-11_49.0_-17.5"}, "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": 2022020001499}, "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": "February 04 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 11 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 123790.83409822774}, "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": ["Madagascar"]}, "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": ["Indian Ocean"]}, "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": -17.5}, "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": 49.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "49.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 47.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 50.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[48.25, -17.35], [48.32, -17.32], [48.35, -17.25], [48.25, -17.0], [48.47, -16.47], [48.82, -16.32], [48.85, -16.25], [48.75, -16.0], [48.85, -15.75], [48.75, -15.5], [48.85, -15.25], [48.75, -15.0], [48.97, -14.47], [49.32, -14.32], [49.35, -14.25], [49.25, -14.0], [49.47, -13.47], [50.0, -13.25], [50.53, -13.47], [50.68, -13.82], [51.03, -13.97], [51.25, -14.5], [51.15, -14.75], [51.25, -15.0], [51.15, -15.25], [51.25, -15.5], [51.15, -15.75], [51.25, -16.0], [51.15, -16.25], [51.25, -16.5], [51.03, -17.03], [50.68, -17.18], [50.65, -17.25], [50.75, -17.5], [50.53, -18.03], [50.18, -18.18], [50.15, -18.25], [50.25, -18.5], [50.15, -18.75], [50.25, -19.0], [50.03, -19.53], [49.5, -19.75], [49.25, -19.65], [49.18, -19.68], [49.15, -19.75], [49.25, -20.0], [49.15, -20.25], [49.25, -20.5], [49.15, -20.75], [49.25, -21.0], [49.03, -21.53], [48.5, -21.75], [47.97, -21.53], [47.75, -21.0], [47.85, -20.75], [47.82, -20.68], [47.47, -20.53], [47.25, -20.0], [47.35, -19.75], [47.25, -19.5], [47.35, -19.25], [47.32, -19.18], [47.25, -19.15], [47.0, -19.25], [46.47, -19.03], [46.25, -18.5], [46.47, -17.97], [46.82, -17.82], [46.97, -17.47], [47.5, -17.25], [47.75, -17.35], [48.0, -17.25], [48.25, -17.35]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Madagascar"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-02-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.25, -17.5], [48.35, -17.25], [48.25, -17.0], [48.47, -16.47], [48.82, -16.32], [48.97, -15.97], [49.38, -15.8], [49.25, -15.5], [49.35, -15.25], [49.25, -15.0], [49.35, -14.75], [49.25, -14.5], [49.35, -14.25], [49.25, -14.0], [49.47, -13.47], [50.0, -13.25], [50.53, -13.47], [50.75, -14.0], [50.65, -14.25], [50.75, -14.5], [50.65, -14.75], [50.68, -14.82], [51.03, -14.97], [51.25, -15.5], [51.15, -15.75], [51.25, -16.0], [51.15, -16.25], [51.25, -16.5], [51.03, -17.03], [50.68, -17.18], [50.53, -17.53], [50.18, -17.68], [50.03, -18.03], [49.68, -18.18], [49.53, -18.53], [49.0, -18.75], [48.47, -18.53], [48.25, -18.0], [48.35, -17.75], [48.25, -17.5]]]]}, "2022-02-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.25, -18.0], [48.35, -17.75], [48.25, -17.5], [48.35, -17.25], [48.25, -17.0], [48.47, -16.47], [48.82, -16.32], [48.97, -15.97], [49.32, -15.82], [49.35, -15.75], [49.25, -15.5], [49.35, -15.25], [49.25, -15.0], [49.35, -14.75], [49.25, -14.5], [49.35, -14.25], [49.25, -14.0], [49.47, -13.47], [50.0, -13.25], [50.53, -13.47], [50.68, -13.82], [51.03, -13.97], [51.25, -14.5], [51.15, -14.75], [51.25, -15.0], [51.15, -15.25], [51.25, -15.5], [51.15, -15.75], [51.25, -16.0], [51.15, -16.25], [51.25, -16.5], [51.03, -17.03], [50.68, -17.18], [50.65, -17.25], [50.75, -17.5], [50.53, -18.03], [50.18, -18.18], [50.15, -18.25], [50.25, -18.5], [50.15, -18.75], [50.25, -19.0], [50.03, -19.53], [49.5, -19.75], [48.97, -19.53], [48.82, -19.18], [48.47, -19.03], [48.25, -18.5], [48.35, -18.25], [48.25, -18.0]]]]}, "2022-02-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.25, -19.5], [47.35, -19.25], [47.25, -19.0], [47.47, -18.47], [47.82, -18.32], [47.97, -17.97], [48.32, -17.82], [48.35, -17.75], [48.25, -17.5], [48.35, -17.25], [48.25, -17.0], [48.47, -16.47], [48.82, -16.32], [48.85, -16.25], [48.75, -16.0], [48.85, -15.75], [48.75, -15.5], [48.85, -15.25], [48.75, -15.0], [48.97, -14.47], [49.32, -14.32], [49.35, -14.25], [49.25, -14.0], [49.47, -13.47], [50.0, -13.25], [50.53, -13.47], [50.68, -13.82], [51.03, -13.97], [51.25, -14.5], [51.15, -14.75], [51.25, -15.0], [51.15, -15.25], [51.25, -15.5], [51.15, -15.75], [51.25, -16.0], [51.15, -16.25], [51.25, -16.5], [51.03, -17.03], [50.68, -17.18], [50.65, -17.25], [50.75, -17.5], [50.53, -18.03], [50.18, -18.18], [50.15, -18.25], [50.25, -18.5], [50.15, -18.75], [50.25, -19.0], [50.03, -19.53], [49.5, -19.75], [49.25, -19.65], [49.18, -19.68], [49.15, -19.75], [49.25, -20.0], [49.15, -20.25], [49.25, -20.5], [49.15, -20.75], [49.25, -21.0], [49.03, -21.53], [48.5, -21.75], [47.97, -21.53], [47.75, -21.0], [47.85, -20.75], [47.82, -20.68], [47.47, -20.53], [47.25, -20.0], [47.35, -19.75], [47.25, -19.5]]]]}, "2022-02-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.25, -19.5], [47.35, -19.25], [47.25, -19.0], [47.35, -18.75], [47.25, -18.5], [47.47, -17.97], [47.82, -17.82], [47.97, -17.47], [48.32, -17.32], [48.35, -17.25], [48.25, -17.0], [48.47, -16.47], [48.82, -16.32], [48.85, -16.25], [48.75, -16.0], [48.85, -15.75], [48.75, -15.5], [48.85, -15.25], [48.75, -15.0], [48.97, -14.47], [49.5, -14.25], [49.8, -14.37], [49.97, -13.97], [50.5, -13.75], [51.03, -13.97], [51.25, -14.5], [51.15, -14.75], [51.25, -15.0], [51.15, -15.25], [51.25, -15.5], [51.15, -15.75], [51.25, -16.0], [51.03, -16.53], [50.5, -16.75], [50.25, -16.65], [50.18, -16.68], [50.15, -16.75], [50.18, -16.82], [50.53, -16.97], [50.75, -17.5], [50.53, -18.03], [50.18, -18.18], [50.15, -18.25], [50.25, -18.5], [50.15, -18.75], [50.25, -19.0], [50.03, -19.53], [49.5, -19.75], [49.25, -19.65], [49.18, -19.68], [49.15, -19.75], [49.25, -20.0], [49.15, -20.25], [49.25, -20.5], [49.15, -20.75], [49.25, -21.0], [49.03, -21.53], [48.5, -21.75], [47.97, -21.53], [47.75, -21.0], [47.85, -20.75], [47.82, -20.68], [47.47, -20.53], [47.25, -20.0], [47.35, -19.75], [47.25, -19.5]]]]}, "2022-02-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, -19.03], [46.75, -18.5], [46.97, -17.97], [47.32, -17.82], [47.47, -17.47], [48.0, -17.25], [48.25, -17.35], [48.32, -17.32], [48.35, -17.25], [48.25, -17.0], [48.47, -16.47], [48.82, -16.32], [48.85, -16.25], [48.75, -16.0], [48.85, -15.75], [48.75, -15.5], [48.85, -15.25], [48.75, -15.0], [48.97, -14.47], [49.5, -14.25], [49.8, -14.37], [49.97, -13.97], [50.5, -13.75], [51.03, -13.97], [51.25, -14.5], [51.03, -15.03], [50.63, -15.2], [50.75, -15.5], [50.65, -15.75], [50.75, -16.0], [50.53, -16.53], [50.18, -16.68], [50.15, -16.75], [50.25, -17.0], [50.03, -17.53], [49.68, -17.68], [49.65, -17.75], [49.75, -18.0], [49.65, -18.25], [49.75, -18.5], [49.65, -18.75], [49.75, -19.0], [49.53, -19.53], [49.18, -19.68], [49.15, -19.75], [49.25, -20.0], [49.15, -20.25], [49.25, -20.5], [49.15, -20.75], [49.25, -21.0], [49.03, -21.53], [48.5, -21.75], [47.97, -21.53], [47.75, -21.0], [47.85, -20.75], [47.82, -20.68], [47.47, -20.53], [47.25, -20.0], [47.35, -19.75], [47.25, -19.5], [47.35, -19.25], [47.32, -19.18], [46.97, -19.03]]]]}, "2022-02-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, -17.47], [47.5, -17.25], [47.75, -17.35], [48.0, -17.25], [48.25, -17.35], [48.5, -17.25], [49.03, -17.47], [49.25, -18.0], [49.03, -18.53], [48.68, -18.68], [48.53, -19.03], [48.0, -19.25], [47.75, -19.15], [47.5, -19.25], [47.25, -19.15], [47.0, -19.25], [46.47, -19.03], [46.25, -18.5], [46.47, -17.97], [46.82, -17.82], [46.97, -17.47]]]]}, "2022-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, -17.47], [47.5, -17.25], [47.75, -17.35], [48.0, -17.25], [48.25, -17.35], [48.5, -17.25], [49.03, -17.47], [49.25, -18.0], [49.03, -18.53], [48.68, -18.68], [48.53, -19.03], [48.0, -19.25], [47.75, -19.15], [47.5, -19.25], [47.25, -19.15], [47.0, -19.25], [46.47, -19.03], [46.25, -18.5], [46.47, -17.97], [46.82, -17.82], [46.97, -17.47]]]]}, "2022-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, -17.47], [47.5, -17.25], [47.75, -17.35], [48.0, -17.25], [48.53, -17.47], [48.75, -18.0], [48.53, -18.53], [48.18, -18.68], [48.03, -19.03], [47.5, -19.25], [47.25, -19.15], [47.0, -19.25], [46.47, -19.03], [46.25, -18.5], [46.47, -17.97], [46.82, -17.82], [46.97, -17.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.5886359786952085}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.0132950240804313}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.294518659495964, 27.932511692651758, 27.122425379111178, 26.60922877674443, 25.660637509395997, 22.878538962716675, 23.360488524141147, 23.07145637484473]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.957550396539716, 29.759489307882177, 29.314950458743454, 28.628060953309273, 28.43615906839733, 23.56405259256769, 24.060678160212717, 23.995225793183977]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.8674532628350675, 2.172035373974525, 2.133684082022523, 2.102820581020168, 1.9930508479664821, 1.246865488321968, 1.7366063818104276, 1.5663844408810945]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.6065756403758655, 3.3881890148837783, 3.5886359786952085, 3.4237296561299218, 2.687755061241546, 1.3635759449585407, 1.8917800017126751, 1.7384089602562653]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6751389265367962, 2.0442604033951417, 1.9363185080114589, 1.8474924930487762, 1.7545876843064092, 1.339395556271065, 1.8805059208889219, 1.7466213363486314]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.0818355896447263, 3.3545018480835007, 2.7667230644047516, 2.5529559522807945, 2.3450888337479485, 1.4444763183960074, 2.0113310203299553, 2.1027243368785653]}}