{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:24:30.975432", "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-May-12_to_2021-May-14_300.0_-30.0"}, "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": 2021050000656}, "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 12 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 14 2021"}, "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": "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": 75055.41072501814}, "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": ["Argentina"]}, "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": []}, "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": -30.0}, "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": 300.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "300.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 298.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 301.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -31.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -28.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-62.25, -29.5], [-62.03, -28.97], [-61.677, -28.823], [-61.53, -28.47], [-61.177, -28.323], [-61.03, -27.97], [-60.5, -27.75], [-60.25, -27.854], [-60.0, -27.75], [-59.47, -27.97], [-59.323, -28.323], [-59.25, -28.354], [-59.0, -28.25], [-58.47, -28.47], [-58.25, -29.0], [-58.354, -29.25], [-58.323, -29.323], [-57.97, -29.47], [-57.75, -30.0], [-57.854, -30.25], [-57.75, -30.5], [-57.97, -31.03], [-58.323, -31.177], [-58.354, -31.25], [-58.25, -31.5], [-58.47, -32.03], [-59.0, -32.25], [-59.53, -32.03], [-59.677, -31.677], [-60.0, -31.543], [-60.5, -31.75], [-61.03, -31.53], [-61.25, -31.0], [-61.146, -30.75], [-61.177, -30.677], [-61.53, -30.53], [-61.677, -30.177], [-62.03, -30.03], [-62.25, -29.5]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-05-12T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-61.67677669529661, -30.17677669529664], [-62.03033008588989, 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-31.75], [-61.03033008588989, -31.53033008588991], [-61.25, -31.0], [-61.14644660940672, -30.75], [-61.17677669529661, -30.67677669529664], [-61.53033008588989, -30.53033008588991], [-61.67677669529661, -30.17677669529664]]]}, "2021-05-13T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-61.67677669529661, -30.17677669529664], [-62.03033008588989, -30.03033008588991], [-62.25, -29.5], [-62.03033008588989, -28.96966991411009], [-61.67677669529661, -28.82322330470336], [-61.53033008588989, -28.46966991411009], [-61.17677669529661, -28.32322330470336], [-61.03033008588989, -27.96966991411009], [-60.5, -27.75], [-60.25, -27.853553390593277], [-60.0, -27.75], [-59.46966991411011, -27.96966991411009], [-59.32322330470339, -28.32322330470336], [-59.25, -28.353553390593277], [-59.0, -28.25], [-58.46966991411011, -28.46966991411009], [-58.25, -29.0], [-58.35355339059328, -29.25], [-58.32322330470339, -29.32322330470336], [-57.96966991411011, -29.46966991411009], [-57.75, -30.0], 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"description": "Maximum t2m anomaly recorded over entire duration", "value": -6.998560797241225}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.700945119030204}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.444977901198683, 11.00199570465071, 12.218114415464242]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.412250540814, 10.204268693437143, 11.4414861075349]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.599292746813751, -5.949587148870397, -4.553955461406464]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.998560797241225, -6.355397275196992, -4.892296860544377]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9980876513458714, -1.8004856772298339, -1.3700274590548747]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.147519804944646, -1.9020881238648666, -1.4851344923629823]}}