{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:17:13.923921", "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-Jan-22_to_2022-Jan-24_44.0_-20.5"}, "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": 2022010002471}, "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 22 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 24 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 95327.60897037755}, "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": []}, "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": -20.5}, "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": 44.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "44.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 41.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 44.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -19.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[40.75, -20.0], [40.97, -19.47], [41.5, -19.25], [41.75, -19.35], [42.0, -19.25], [42.25, -19.35], [42.32, -19.32], [42.47, -18.97], [43.0, -18.75], [43.25, -18.85], [43.5, -18.75], [43.75, -18.85], [44.0, -18.75], [44.53, -18.97], [44.75, -19.5], [44.65, -19.75], [44.75, -20.0], [44.65, -20.25], [44.68, -20.32], [45.03, -20.47], [45.25, -21.0], [45.15, -21.25], [45.25, -21.5], [45.03, -22.03], [44.68, -22.18], [44.53, -22.53], [44.0, -22.75], [43.75, -22.65], [43.5, -22.75], [43.25, -22.65], [43.0, -22.75], [42.75, -22.65], [42.5, -22.75], [42.25, -22.65], [42.0, -22.75], [41.47, -22.53], [41.25, -22.0], [41.35, -21.75], [41.32, -21.68], [40.97, -21.53], [40.75, -21.0], [40.85, -20.75], [40.75, -20.5], [40.85, -20.25], [40.75, -20.0]]]]}}, "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": {"2022-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.75, -20.5], [40.85, -20.25], [40.75, -20.0], [40.97, -19.47], [41.5, -19.25], [41.75, -19.35], [42.0, -19.25], [42.25, -19.35], [42.32, -19.32], [42.47, -18.97], [43.0, -18.75], [43.25, -18.85], [43.5, -18.75], [43.75, -18.85], [44.0, -18.75], [44.53, -18.97], [44.75, -19.5], [44.65, -19.75], [44.75, -20.0], [44.65, -20.25], [44.68, -20.32], [45.03, -20.47], [45.25, -21.0], [45.15, -21.25], [45.25, -21.5], [45.03, -22.03], [44.68, -22.18], [44.53, -22.53], [44.0, -22.75], [43.75, -22.65], [43.5, -22.75], [43.25, -22.65], [43.0, -22.75], [42.75, -22.65], [42.5, -22.75], [42.25, -22.65], [42.0, -22.75], [41.47, -22.53], [41.25, -22.0], [41.35, -21.75], [41.32, -21.68], [40.97, -21.53], [40.75, -21.0], [40.85, -20.75], [40.75, -20.5]]]]}, "2022-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.75, -20.5], [40.85, -20.25], [40.75, -20.0], [40.97, -19.47], [41.5, -19.25], [41.75, -19.35], [42.0, -19.25], [42.25, -19.35], [42.32, -19.32], [42.47, -18.97], [43.0, -18.75], [43.25, -18.85], [43.5, -18.75], [43.75, -18.85], [44.0, -18.75], [44.53, -18.97], [44.75, -19.5], [44.65, -19.75], [44.75, -20.0], [44.65, -20.25], [44.68, -20.32], [45.03, -20.47], [45.25, -21.0], [45.15, -21.25], [45.25, -21.5], [45.03, -22.03], [44.68, -22.18], [44.53, -22.53], [44.0, -22.75], [43.75, -22.65], [43.5, -22.75], [43.25, -22.65], [43.0, -22.75], [42.75, -22.65], [42.5, -22.75], [42.25, -22.65], [42.0, -22.75], [41.47, -22.53], [41.25, -22.0], [41.35, -21.75], [41.32, -21.68], [40.97, -21.53], [40.75, -21.0], [40.85, -20.75], [40.75, -20.5]]]]}, "2022-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.75, -20.5], [40.85, -20.25], [40.75, -20.0], [40.97, -19.47], [41.5, -19.25], [41.75, -19.35], [42.0, -19.25], [42.25, -19.35], [42.32, -19.32], [42.47, -18.97], [43.0, -18.75], [43.25, -18.85], [43.5, -18.75], [43.75, -18.85], [44.0, -18.75], [44.53, -18.97], [44.75, -19.5], [44.65, -19.75], [44.75, -20.0], [44.65, -20.25], [44.68, -20.32], [45.03, -20.47], [45.25, -21.0], [45.15, -21.25], [45.25, -21.5], [45.03, -22.03], [44.68, -22.18], [44.53, -22.53], [44.0, -22.75], [43.75, -22.65], [43.5, -22.75], [43.25, -22.65], [43.0, -22.75], [42.75, -22.65], [42.5, -22.75], [42.25, -22.65], [42.0, -22.75], [41.47, -22.53], [41.25, -22.0], [41.35, -21.75], [41.32, -21.68], [40.97, -21.53], [40.75, -21.0], [40.85, -20.75], [40.75, -20.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.607417033545914}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.987581763695851}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.70577228991118, 30.289671074080786, 29.31352882899148]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.532698673379514, 32.252692601240824, 31.201245308482157]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.2982618621756121, 2.851958091262306, 1.8125253376496349]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.0074529088351483, 4.607417033545914, 3.8622964169343845]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5237304591533625, 3.321726825330788, 2.0053083923735877]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7642862534964943, 4.723347338149575, 2.901053004682559]}}