{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:18:32.155936", "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-Mar-05_to_2022-Mar-10_305.0_3.5"}, "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": 2022030000206}, "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": "March 05 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 10 2022"}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 64756.98585805804}, "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": ["French Guiana", "Guyana", "Suriname"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "America", "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": []}, "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": 3.5}, "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": 305.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "305.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 302.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 306.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 3.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-55.0, 2.75], [-55.25, 2.85], [-55.32, 2.82], [-55.47, 2.47], [-56.0, 2.25], [-56.25, 2.35], [-56.5, 2.25], [-56.75, 2.35], [-57.0, 2.25], [-57.53, 2.47], [-57.75, 3.0], [-57.65, 3.25], [-57.68, 3.32], [-58.03, 3.47], [-58.18, 3.82], [-58.53, 3.97], [-58.75, 4.5], [-58.53, 5.03], [-58.18, 5.18], [-58.03, 5.53], [-57.5, 5.75], [-56.97, 5.53], [-56.75, 5.0], [-56.85, 4.75], [-56.82, 4.68], [-56.5, 4.54], [-56.18, 4.68], [-56.03, 5.03], [-55.5, 5.25], [-55.25, 5.15], [-55.0, 5.25], [-54.75, 5.15], [-54.5, 5.25], [-54.25, 5.15], [-54.0, 5.25], [-53.47, 5.03], [-53.25, 4.5], [-53.47, 3.97], [-53.82, 3.82], [-53.97, 3.47], [-54.32, 3.32], [-54.47, 2.97], [-55.0, 2.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-58.52999999999997, 3.97], [-58.75, 4.5], [-58.52999999999997, 5.03], [-58.18000000000001, 5.18], 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3.25], [-57.75, 3.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.314043143228048}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5377801456538729}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.97529083209008, 23.74858640881257, 24.113202211964904, 23.932081744666675, 23.854545813353695, 23.590092274941355]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.214271845301994, 23.015770455720997, 23.707421530647196, 23.277194105254523, 23.405366466615135, 22.97760796397847]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.596560438298674, -1.787356347200582, -1.3898945905401163, -1.4355238389821667, -1.4515908111573443, -1.6186256474102427]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8823521077570717, -2.314043143228048, -1.7416185101178598, -1.9438883301395435, -1.780207128226607, -2.042884958026832]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9572859150895172, -2.1297632411075247, -1.6385340512737736, -1.6613524198492085, -1.6068223394837076, -1.7537407694300404]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3253427951688854, -2.712997731123645, -1.9953138530504526, -2.018701637289165, -1.792035773307408, -2.2296132191505564]}}