{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:17:13.200092", "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-21_to_2022-Jan-23_55.5_-21.5"}, "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": 2022010002416}, "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 21 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 23 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": 63452.3277186801}, "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": ["R\u00e9union"]}, "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": -21.5}, "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": 55.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "55.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 53.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 58.5}, "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": [[[[52.75, -21.5], [52.97, -20.97], [53.5, -20.75], [53.75, -20.85], [54.0, -20.75], [54.25, -20.85], [54.32, -20.82], [54.47, -20.47], [55.0, -20.25], [55.25, -20.35], [55.5, -20.25], [55.8, -20.37], [55.97, -19.97], [56.32, -19.82], [56.47, -19.47], [57.0, -19.25], [57.25, -19.35], [57.32, -19.32], [57.47, -18.97], [58.0, -18.75], [58.25, -18.85], [58.5, -18.75], [59.03, -18.97], [59.25, -19.5], [59.03, -20.03], [58.5, -20.25], [58.25, -20.15], [58.18, -20.18], [58.04, -20.5], [58.25, -21.0], [58.03, -21.53], [57.68, -21.68], [57.53, -22.03], [57.18, -22.18], [57.03, -22.53], [56.5, -22.75], [56.25, -22.65], [56.0, -22.75], [55.75, -22.65], [55.5, -22.75], [55.25, -22.65], [55.0, -22.75], [54.47, -22.53], [54.32, -22.18], [54.25, -22.15], [54.0, -22.25], [53.75, -22.15], [53.5, -22.25], [52.97, -22.03], [52.75, -21.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Madagascar", "S.Indian-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.5, -22.25], [52.97, -22.03], [52.75, -21.5], [52.97, -20.97], [53.5, -20.75], [53.75, -20.85], [54.0, -20.75], [54.25, -20.85], [54.32, -20.82], [54.47, -20.47], [55.0, -20.25], [55.25, -20.35], [55.5, -20.25], [55.8, -20.37], [55.97, -19.97], [56.32, -19.82], [56.47, -19.47], [57.0, -19.25], [57.25, -19.35], [57.32, -19.32], [57.47, -18.97], [58.0, -18.75], [58.25, -18.85], [58.5, -18.75], [59.03, -18.97], [59.25, -19.5], [59.03, -20.03], [58.5, -20.25], [58.25, -20.15], [58.18, -20.18], [58.04, -20.5], [58.25, -21.0], [58.03, -21.53], [57.68, -21.68], [57.53, -22.03], [57.18, -22.18], [57.03, -22.53], [56.5, -22.75], [56.25, -22.65], [56.0, -22.75], [55.75, -22.65], [55.5, -22.75], [55.25, -22.65], [55.0, -22.75], [54.47, -22.53], [54.32, -22.18], [54.25, -22.15], [54.0, -22.25], [53.75, -22.15], [53.5, -22.25]]]]}, "2022-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[53.5, 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"value": 1.0816256739079377}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.446556452791356, 27.63273285479653, 27.384937071880984]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.06967112308297, 28.213256662385447, 27.903114607931855]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.0572879043894416, 1.2270814237455738, 0.9605076935887976]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.408362126964846, 1.7812882579885354, 1.2085053515123718]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7261572482074674, 2.020440495551242, 1.5852393750136178]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.2603748734232387, 2.9964208433694135, 2.033385460253922]}}