{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:36.973369", "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": "2021-Dec-21_to_2021-Dec-26_48.5_16.5"}, "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": 2021120002431}, "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": "December 21 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 26 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 50432.460949029366}, "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": ["Yemen"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 16.5}, "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": 48.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "48.5\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": 51.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[49.53, 15.97], [49.18, 15.82], [49.03, 15.47], [48.68, 15.32], [48.65, 15.25], [48.75, 15.0], [48.53, 14.47], [48.0, 14.25], [47.75, 14.35], [47.5, 14.25], [47.25, 14.35], [47.0, 14.25], [46.47, 14.47], [46.25, 15.0], [46.47, 15.53], [46.82, 15.68], [46.96, 16.0], [46.75, 16.5], [46.97, 17.03], [47.5, 17.25], [47.75, 17.15], [47.82, 17.18], [47.97, 17.53], [48.5, 17.75], [48.75, 17.65], [49.0, 17.75], [49.25, 17.65], [49.5, 17.75], [49.75, 17.65], [49.82, 17.68], [49.97, 18.03], [50.5, 18.25], [50.75, 18.15], [51.0, 18.25], [51.53, 18.03], [51.75, 17.5], [51.53, 16.97], [51.0, 16.75], [50.75, 16.85], [50.68, 16.82], [50.53, 16.47], [50.0, 16.25], [49.75, 16.35], [49.68, 16.32], [49.53, 15.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.75, 15.5], [46.97, 16.03], [47.5, 16.25], [47.75, 16.15], [47.88, 16.2], [47.75, 16.5], [47.97, 17.03], [48.5, 17.25], [49.03, 17.03], [49.25, 16.5], [49.03, 15.97], [48.63, 15.8], [48.75, 15.5], [48.65, 15.25], [48.75, 15.0], [48.53, 14.47], [48.0, 14.25], [47.75, 14.35], [47.5, 14.25], [46.97, 14.47], [46.75, 15.0], [46.85, 15.25], [46.75, 15.5]]]]}, "2021-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.75, 15.5], [46.97, 16.03], [47.5, 16.25], [47.75, 16.15], [47.82, 16.18], [47.85, 16.25], [47.75, 16.5], [47.97, 17.03], [48.5, 17.25], [48.75, 17.15], [49.0, 17.25], [49.53, 17.03], [49.75, 16.5], [49.53, 15.97], [49.18, 15.82], [49.03, 15.47], [48.68, 15.32], [48.65, 15.25], [48.75, 15.0], [48.53, 14.47], [48.0, 14.25], [47.75, 14.35], [47.5, 14.25], [46.97, 14.47], [46.75, 15.0], [46.85, 15.25], [46.75, 15.5]]]]}, "2021-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.75, 15.5], [46.97, 16.03], [47.5, 16.25], [47.75, 16.15], [47.82, 16.18], [47.85, 16.25], [47.75, 16.5], [47.97, 17.03], [48.5, 17.25], [48.75, 17.15], [49.0, 17.25], [49.53, 17.03], [49.75, 16.5], [49.53, 15.97], [49.18, 15.82], [49.03, 15.47], [48.68, 15.32], [48.65, 15.25], [48.75, 15.0], [48.53, 14.47], [48.0, 14.25], [47.75, 14.35], [47.5, 14.25], [46.97, 14.47], [46.75, 15.0], [46.85, 15.25], [46.75, 15.5]]]]}, "2021-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, 15.97], [46.75, 16.5], [46.97, 17.03], [47.5, 17.25], [47.75, 17.15], [47.82, 17.18], [47.97, 17.53], [48.5, 17.75], [48.75, 17.65], [49.0, 17.75], [49.25, 17.65], [49.5, 17.75], [49.75, 17.65], [49.82, 17.68], [49.97, 18.03], [50.5, 18.25], [50.75, 18.15], [51.0, 18.25], [51.53, 18.03], [51.75, 17.5], [51.53, 16.97], [51.0, 16.75], [50.75, 16.85], [50.68, 16.82], [50.53, 16.47], [50.0, 16.25], [49.75, 16.35], [49.68, 16.32], [49.53, 15.97], [49.18, 15.82], [49.03, 15.47], [48.5, 15.25], [48.25, 15.35], [48.0, 15.25], [47.57, 15.43], [47.75, 15.0], [47.53, 14.47], [47.0, 14.25], [46.47, 14.47], [46.25, 15.0], [46.47, 15.53], [47.0, 15.75], [47.43, 15.57], [47.32, 15.82], [46.97, 15.97]]]]}, "2021-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, 15.97], [46.75, 16.5], [46.97, 17.03], [47.5, 17.25], [47.75, 17.15], [47.82, 17.18], [47.97, 17.53], [48.5, 17.75], [48.75, 17.65], [49.0, 17.75], [49.25, 17.65], [49.5, 17.75], [49.75, 17.65], [49.82, 17.68], [49.97, 18.03], [50.5, 18.25], [50.75, 18.15], [51.0, 18.25], [51.53, 18.03], [51.75, 17.5], [51.53, 16.97], [51.0, 16.75], [50.75, 16.85], [50.68, 16.82], [50.53, 16.47], [50.0, 16.25], [49.75, 16.35], [49.68, 16.32], [49.53, 15.97], [49.0, 15.75], [48.75, 15.85], [48.68, 15.82], [48.53, 15.47], [48.0, 15.25], [47.57, 15.43], [47.75, 15.0], [47.53, 14.47], [47.0, 14.25], [46.47, 14.47], [46.25, 15.0], [46.47, 15.53], [47.0, 15.75], [47.43, 15.57], [47.32, 15.82], [46.97, 15.97]]]]}, "2021-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, 15.97], [46.75, 16.5], [46.97, 17.03], [47.5, 17.25], [47.75, 17.15], [47.82, 17.18], [47.97, 17.53], [48.5, 17.75], [48.75, 17.65], [49.0, 17.75], [49.25, 17.65], [49.5, 17.75], [49.75, 17.65], [49.82, 17.68], [49.97, 18.03], [50.5, 18.25], [50.75, 18.15], [51.0, 18.25], [51.53, 18.03], [51.75, 17.5], [51.53, 16.97], [51.0, 16.75], [50.75, 16.85], [50.68, 16.82], [50.53, 16.47], [50.0, 16.25], [49.75, 16.35], [49.68, 16.32], [49.53, 15.97], [49.0, 15.75], [48.75, 15.85], [48.68, 15.82], [48.53, 15.47], [48.0, 15.25], [47.57, 15.43], [47.75, 15.0], [47.53, 14.47], [47.0, 14.25], [46.47, 14.47], [46.25, 15.0], [46.47, 15.53], [47.0, 15.75], [47.43, 15.57], [47.32, 15.82], [46.97, 15.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.157312456695308}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.4957450635858374}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.831867872303633, 21.582495988320034, 21.252846797078007, 22.31060654660746, 22.788090530989507, 22.629353234750624]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.913224795604435, 22.483599446022083, 22.311670591264715, 23.766925540460875, 24.66766269986283, 24.120432318354858]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.597692935309726, 3.0979693491170224, 2.7282998576156468, 3.424955642647966, 4.076947522455924, 4.045131734436244]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.1337036899215605, 3.7496044037424667, 2.9361411859269424, 4.158271077764027, 5.157312456695308, 4.7675477977521155]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2332054851040533, 1.4576983689687413, 1.2848866711389382, 1.3309370396526927, 1.5846841968390557, 1.6428571619486094]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3524144913090153, 2.0095638277827885, 1.4624142546354137, 1.4996496243612618, 1.8218898685289633, 1.8063957549487815]}}