{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:13:37.651989", "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": "2020-May-20_to_2020-May-22_356.0_49.0"}, "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": 2020050002372}, "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 20 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 22 2020"}, "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": 51321.61517912119}, "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": ["France"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["Atlantic 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": 49.0}, "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": 356.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "356.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 352.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 357.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 49.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-8.03, 48.03], [-7.5, 48.25], [-7.25, 48.146], [-7.177, 48.177], [-7.146, 48.25], [-7.25, 48.5], [-7.03, 49.03], [-6.677, 49.177], [-6.53, 49.53], [-6.0, 49.75], [-5.75, 49.646], [-5.5, 49.75], [-5.25, 49.646], [-5.177, 49.677], [-5.03, 50.03], [-4.5, 50.25], [-4.25, 50.146], [-4.0, 50.25], [-3.75, 50.146], [-3.5, 50.25], [-2.97, 50.03], [-2.823, 49.677], [-2.47, 49.53], [-2.323, 49.177], [-1.97, 49.03], [-1.75, 48.5], [-1.97, 47.97], [-2.5, 47.75], [-3.03, 47.97], [-3.177, 48.323], [-3.25, 48.354], [-3.5, 48.25], [-3.75, 48.354], [-4.0, 48.25], [-4.25, 48.354], [-4.323, 48.323], [-4.354, 48.25], [-4.25, 48.0], [-4.47, 47.47], [-5.0, 47.25], [-5.25, 47.354], [-5.5, 47.25], [-5.75, 47.354], [-5.823, 47.323], [-5.854, 47.25], [-5.75, 47.0], [-5.97, 46.47], [-6.5, 46.25], [-6.75, 46.354], [-7.0, 46.25], [-7.25, 46.354], [-7.5, 46.25], [-8.03, 46.47], [-8.25, 47.0], [-8.146, 47.25], [-8.25, 47.5], [-8.03, 48.03]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe", "West&Central-Europe"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-05-20T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-8.146446609406723, 47.25], [-8.25, 47.5], [-8.030330085889887, 48.03033008588991], [-7.5, 48.25], [-7.25, 48.14644660940672], [-7.17677669529661, 48.17677669529664], [-7.146446609406723, 48.25], [-7.25, 48.5], [-7.0303300858898865, 49.03033008588991], [-6.67677669529661, 49.17677669529664], [-6.5303300858898865, 49.53033008588991], [-6.0, 49.75], [-5.75, 49.64644660940672], [-5.5, 49.75], [-5.25, 49.64644660940672], [-5.17677669529661, 49.67677669529664], [-5.0303300858898865, 50.03033008588991], [-4.5, 50.25], [-4.25, 50.14644660940672], [-4.0, 50.25], [-3.75, 50.14644660940672], [-3.5, 50.25], [-2.9696699141101135, 50.03033008588991], [-2.82322330470339, 49.67677669529664], [-2.4696699141101135, 49.53033008588991], [-2.32322330470339, 49.17677669529664], [-1.9696699141101135, 49.03033008588991], [-1.75, 48.5], 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"Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.291820504856787, 3.5141405974953273, 2.7581805431574367]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [2.0683643031212116, 1.5349251264280963, 1.5307574014495327]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.5759887270320267, 2.0681412280135465, 2.0604963555077096]}}