{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:16.322957", "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-Jun-14_to_2022-Jun-18_47.5_-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": 2022060002195}, "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": "June 14 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 18 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 67944.59101505842}, "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": -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": 47.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "47.5\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": 49.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[46.97, -19.53], [46.75, -19.0], [46.97, -18.47], [47.32, -18.32], [47.38, -18.2], [46.97, -18.03], [46.75, -17.5], [46.85, -17.25], [46.82, -17.18], [46.47, -17.03], [46.25, -16.5], [46.47, -15.97], [46.82, -15.82], [46.97, -15.47], [47.32, -15.32], [47.47, -14.97], [47.82, -14.82], [47.97, -14.47], [48.5, -14.25], [49.03, -14.47], [49.25, -15.0], [49.15, -15.25], [49.25, -15.5], [49.13, -15.8], [49.53, -15.97], [49.75, -16.5], [49.65, -16.75], [49.75, -17.0], [49.65, -17.25], [49.75, -17.5], [49.65, -17.75], [49.75, -18.0], [49.53, -18.53], [49.18, -18.68], [49.03, -19.03], [48.68, -19.18], [48.53, -19.53], [48.0, -19.75], [47.75, -19.65], [47.5, -19.75], [46.97, -19.53]]]]}}, "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": {"2022-06-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.25, -19.0], [48.03, -19.53], [47.5, -19.75], [46.97, -19.53], [46.75, -19.0], [46.97, -18.47], [47.5, -18.25], [48.03, -18.47], [48.25, -19.0]]], [[[49.53, -16.97], [49.75, -17.5], [49.53, -18.03], [49.0, -18.25], [48.47, -18.03], [48.25, -17.5], [48.47, -16.97], [49.0, -16.75], [49.53, -16.97]]], [[[46.47, -15.97], [46.82, -15.82], [46.97, -15.47], [47.5, -15.25], [48.03, -15.47], [48.25, -16.0], [48.04, -16.5], [48.25, -17.0], [48.15, -17.25], [48.25, -17.5], [48.03, -18.03], [47.5, -18.25], [46.97, -18.03], [46.75, -17.5], [46.85, -17.25], [46.82, -17.18], [46.47, -17.03], [46.25, -16.5], [46.47, -15.97]]]]}, "2022-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.47, -17.03], [46.25, -16.5], [46.47, -15.97], [46.82, -15.82], [46.97, -15.47], [47.32, -15.32], [47.47, -14.97], [47.82, -14.82], [47.97, -14.47], [48.5, -14.25], [49.03, -14.47], [49.25, -15.0], [49.15, -15.25], [49.25, -15.5], [49.13, -15.8], [49.53, -15.97], [49.75, -16.5], [49.65, -16.75], [49.75, -17.0], [49.65, -17.25], [49.75, -17.5], [49.65, -17.75], [49.75, -18.0], [49.53, -18.53], [49.18, -18.68], [49.03, -19.03], [48.68, -19.18], [48.53, -19.53], [48.0, -19.75], [47.75, -19.65], [47.5, -19.75], [46.97, -19.53], [46.75, -19.0], [46.97, -18.47], [47.32, -18.32], [47.38, -18.2], [46.97, -18.03], [46.75, -17.5], [46.85, -17.25], [46.82, -17.18], [46.47, -17.03]]]]}, "2022-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.47, -17.03], [46.25, -16.5], [46.47, -15.97], [46.82, -15.82], [46.97, -15.47], [47.32, -15.32], [47.47, -14.97], [47.82, -14.82], [47.97, -14.47], [48.5, -14.25], [49.03, -14.47], [49.25, -15.0], [49.15, -15.25], [49.25, -15.5], [49.13, -15.8], [49.53, -15.97], [49.75, -16.5], [49.65, -16.75], [49.75, -17.0], [49.65, -17.25], [49.75, -17.5], [49.65, -17.75], [49.75, -18.0], [49.53, -18.53], [49.18, -18.68], [49.03, -19.03], [48.68, -19.18], [48.53, -19.53], [48.0, -19.75], [47.75, -19.65], [47.5, -19.75], [46.97, -19.53], [46.75, -19.0], [46.97, -18.47], [47.32, -18.32], [47.38, -18.2], [46.97, -18.03], [46.75, -17.5], [46.85, -17.25], [46.82, -17.18], [46.47, -17.03]]]]}, "2022-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.75, -17.0], [46.96, -16.5], [46.75, -16.0], [46.97, -15.47], [47.32, -15.32], [47.47, -14.97], [47.82, -14.82], [47.97, -14.47], [48.5, -14.25], [49.03, -14.47], [49.25, -15.0], [49.15, -15.25], [49.25, -15.5], [49.13, -15.8], [49.53, -15.97], [49.75, -16.5], [49.65, -16.75], [49.75, -17.0], [49.65, -17.25], [49.75, -17.5], [49.65, -17.75], [49.75, -18.0], [49.53, -18.53], [49.18, -18.68], [49.03, -19.03], [48.68, -19.18], [48.53, -19.53], [48.0, -19.75], [47.47, -19.53], [47.25, -19.0], [47.35, -18.75], [47.25, -18.5], [47.38, -18.2], [46.97, -18.03], [46.75, -17.5], [46.85, -17.25], [46.75, -17.0]]]]}, "2022-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, -18.03], [46.75, -17.5], [46.97, -16.97], [47.5, -16.75], [48.03, -16.97], [48.25, -17.5], [48.13, -17.8], [48.53, -17.97], [48.75, -18.5], [48.53, -19.03], [48.0, -19.25], [47.47, -19.03], [47.25, -18.5], [47.38, -18.2], [46.97, -18.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.2379538234317806}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.8716363556488083}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.6511020617927, 20.577800968427937, 20.967320224011928, 20.439722412161984, 18.638873073792183]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.866600255270725, 27.47583614510785, 26.543141169694593, 26.38484438131195, 20.50383393031808]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.4915982247943116, 1.8229583038465613, 2.1858541420883295, 1.726005620995054, 1.4871665137480647]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.8101382000723447, 2.4109738509711747, 3.2379538234317806, 2.198212033566449, 1.4948424902663646]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.491047045741917, 1.7822613399801912, 2.1169569575875515, 1.7024268032991106, 1.3443603143247318]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9709634021224436, 2.6829228775713543, 2.89180372774094, 2.1179240525342173, 1.4192358427636584]}}