{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:28.020912", "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": "2023-May-13_to_2023-May-15_104.5_40.0"}, "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": 2023050001919}, "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": "May 13 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 15 2023"}, "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": 67436.49561915493}, "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": ["China", "Mongolia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": 40.0}, "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": 104.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "104.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 101.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 106.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[100.97, 42.03], [101.32, 42.18], [101.47, 42.53], [102.0, 42.75], [102.25, 42.65], [102.5, 42.75], [102.75, 42.65], [103.0, 42.75], [103.25, 42.65], [103.5, 42.75], [103.75, 42.65], [104.0, 42.75], [104.25, 42.65], [104.5, 42.75], [105.03, 42.53], [105.18, 42.18], [105.25, 42.15], [105.5, 42.25], [106.03, 42.03], [106.25, 41.5], [106.15, 41.25], [106.18, 41.18], [106.53, 41.03], [106.75, 40.5], [106.53, 39.97], [106.0, 39.75], [105.75, 39.85], [105.68, 39.82], [105.53, 39.47], [105.0, 39.25], [104.75, 39.35], [104.5, 39.25], [104.25, 39.35], [104.0, 39.25], [103.47, 39.47], [103.25, 40.0], [103.38, 40.3], [103.25, 40.35], [103.0, 40.25], [102.75, 40.35], [102.5, 40.25], [102.25, 40.35], [102.0, 40.25], [101.47, 40.47], [101.32, 40.82], [100.97, 40.97], [100.75, 41.5], [100.97, 42.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.97, 40.97], [100.75, 41.5], [100.97, 42.03], [101.32, 42.18], [101.47, 42.53], [102.0, 42.75], [102.25, 42.65], [102.5, 42.75], [102.75, 42.65], [103.0, 42.75], [103.25, 42.65], [103.5, 42.75], [103.75, 42.65], [104.0, 42.75], [104.25, 42.65], [104.5, 42.75], [105.03, 42.53], [105.18, 42.18], [105.25, 42.15], [105.5, 42.25], [106.03, 42.03], [106.25, 41.5], [106.15, 41.25], [106.18, 41.18], [106.53, 41.03], [106.75, 40.5], [106.53, 39.97], [106.0, 39.75], [105.75, 39.85], [105.68, 39.82], [105.53, 39.47], [105.0, 39.25], [104.75, 39.35], [104.5, 39.25], [104.25, 39.35], [104.0, 39.25], [103.47, 39.47], [103.25, 40.0], [103.38, 40.3], [103.25, 40.35], [103.0, 40.25], [102.75, 40.35], [102.5, 40.25], [102.25, 40.35], [102.0, 40.25], [101.47, 40.47], [101.32, 40.82], [100.97, 40.97]]]]}, "2023-05-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.97, 40.97], [100.75, 41.5], [100.97, 42.03], [101.32, 42.18], [101.47, 42.53], [102.0, 42.75], [102.25, 42.65], [102.5, 42.75], [102.75, 42.65], [103.0, 42.75], [103.25, 42.65], [103.5, 42.75], [103.75, 42.65], [104.0, 42.75], [104.25, 42.65], [104.5, 42.75], [105.03, 42.53], [105.18, 42.18], [105.25, 42.15], [105.5, 42.25], [106.03, 42.03], [106.25, 41.5], [106.15, 41.25], [106.18, 41.18], [106.53, 41.03], [106.75, 40.5], [106.53, 39.97], [106.0, 39.75], [105.75, 39.85], [105.68, 39.82], [105.53, 39.47], [105.0, 39.25], [104.75, 39.35], [104.5, 39.25], [104.25, 39.35], [104.0, 39.25], [103.47, 39.47], [103.25, 40.0], [103.38, 40.3], [103.25, 40.35], [103.0, 40.25], [102.75, 40.35], [102.5, 40.25], [102.25, 40.35], [102.0, 40.25], [101.47, 40.47], [101.32, 40.82], [100.97, 40.97]]]]}, "2023-05-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.97, 40.97], [100.75, 41.5], [100.97, 42.03], [101.32, 42.18], [101.47, 42.53], [102.0, 42.75], [102.25, 42.65], [102.5, 42.75], [102.75, 42.65], [103.0, 42.75], [103.25, 42.65], [103.5, 42.75], [103.75, 42.65], [104.0, 42.75], [104.25, 42.65], [104.5, 42.75], [105.03, 42.53], [105.18, 42.18], [105.25, 42.15], [105.5, 42.25], [106.03, 42.03], [106.25, 41.5], [106.15, 41.25], [106.18, 41.18], [106.53, 41.03], [106.75, 40.5], [106.53, 39.97], [106.0, 39.75], [105.75, 39.85], [105.68, 39.82], [105.53, 39.47], [105.0, 39.25], [104.75, 39.35], [104.5, 39.25], [104.25, 39.35], [104.0, 39.25], [103.47, 39.47], [103.25, 40.0], [103.38, 40.3], [103.25, 40.35], [103.0, 40.25], [102.75, 40.35], [102.5, 40.25], [102.25, 40.35], [102.0, 40.25], [101.47, 40.47], [101.32, 40.82], [100.97, 40.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.213430714204776}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.7830124954681885}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.926828380341362, 22.98033302725611, 24.69807460557854]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.188334576293016, 24.90075253438073, 26.64208583557331]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.503021304631341, 5.209915613255706, 6.636100568517518]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.018074487342005, 5.897420415061902, 8.213430714204776]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3856710970227952, 1.356287598755731, 1.7460282798435478]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.545830424049632, 1.5029306473358364, 2.128273408027237]}}