{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:04.252164", "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-Sep-02_to_2022-Sep-06_187.5_26.5"}, "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": 2022090001411}, "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": "September 02 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 06 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": 52773.40522048829}, "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": ["United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America"]}, "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": ["Pacific 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": 26.5}, "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": 187.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "187.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 185.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 191.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-174.5, 26.75], [-174.25, 26.65], [-174.18, 26.68], [-174.03, 27.03], [-173.5, 27.25], [-173.25, 27.15], [-173.0, 27.25], [-172.75, 27.15], [-172.5, 27.25], [-171.97, 27.03], [-171.82, 26.68], [-171.75, 26.65], [-171.68, 26.68], [-171.53, 27.03], [-171.0, 27.25], [-170.75, 27.15], [-170.5, 27.25], [-170.25, 27.15], [-170.0, 27.25], [-169.75, 27.15], [-169.5, 27.25], [-168.97, 27.03], [-168.75, 26.5], [-168.87, 26.2], [-168.75, 26.15], [-168.5, 26.25], [-167.97, 26.03], [-167.75, 25.5], [-167.97, 24.97], [-168.5, 24.75], [-168.75, 24.85], [-169.0, 24.75], [-169.25, 24.85], [-169.5, 24.75], [-169.75, 24.85], [-170.0, 24.75], [-170.25, 24.85], [-170.5, 24.75], [-170.75, 24.85], [-171.0, 24.75], [-171.53, 24.97], [-171.68, 25.32], [-171.75, 25.35], [-172.0, 25.25], [-172.53, 25.47], [-172.68, 25.82], [-172.75, 25.85], [-172.82, 25.82], [-172.97, 25.47], [-173.5, 25.25], [-173.75, 25.35], [-174.0, 25.25], [-174.25, 25.35], [-174.5, 25.25], [-175.03, 25.47], [-175.25, 26.0], [-175.03, 26.53], [-174.5, 26.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-173.0, 25.75], [-173.53, 25.97], [-173.75, 26.5], [-173.53, 27.03], [-173.0, 27.25], [-172.75, 27.15], [-172.5, 27.25], [-171.97, 27.03], [-171.75, 26.5], [-171.97, 25.97], [-172.5, 25.75], [-172.75, 25.85], [-173.0, 25.75]]]]}, "2022-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-171.53, 24.97], [-171.75, 25.5], [-171.53, 26.03], [-171.0, 26.25], [-170.75, 26.15], [-170.5, 26.25], [-170.25, 26.15], [-170.12, 26.2], [-170.25, 26.5], [-170.03, 27.03], [-169.5, 27.25], [-168.97, 27.03], [-168.75, 26.5], [-168.87, 26.2], [-168.75, 26.15], [-168.5, 26.25], [-167.97, 26.03], [-167.75, 25.5], [-167.97, 24.97], [-168.5, 24.75], [-168.75, 24.85], [-169.0, 24.75], [-169.25, 24.85], [-169.5, 24.75], [-169.75, 24.85], [-170.0, 24.75], [-170.25, 24.85], [-170.5, 24.75], [-170.75, 24.85], [-171.0, 24.75], [-171.53, 24.97]]], [[[-174.03, 25.97], [-174.25, 26.5], [-174.03, 27.03], [-173.5, 27.25], [-173.25, 27.15], [-173.0, 27.25], [-172.75, 27.15], [-172.5, 27.25], [-171.97, 27.03], [-171.75, 26.5], [-171.97, 25.97], [-172.5, 25.75], [-172.75, 25.85], [-173.0, 25.75], [-173.25, 25.85], [-173.5, 25.75], [-174.03, 25.97]]]]}, "2022-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-174.5, 25.25], [-175.03, 25.47], [-175.25, 26.0], [-175.03, 26.53], [-174.5, 26.75], [-174.25, 26.65], [-174.18, 26.68], [-174.03, 27.03], [-173.5, 27.25], [-173.25, 27.15], [-173.0, 27.25], [-172.75, 27.15], [-172.5, 27.25], [-171.97, 27.03], [-171.82, 26.68], [-171.75, 26.65], [-171.68, 26.68], [-171.53, 27.03], [-171.0, 27.25], [-170.75, 27.15], [-170.5, 27.25], [-170.25, 27.15], [-170.0, 27.25], [-169.75, 27.15], [-169.5, 27.25], [-168.97, 27.03], [-168.75, 26.5], [-168.87, 26.2], [-168.75, 26.15], [-168.5, 26.25], 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evolution of maximum standardized t2m anomalies.", "value": [1.3520087325155299, 1.6892708336381006, 1.9193405825573182, 1.7315142959935301, 1.7302588792697295]}}