{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:18:10.754494", "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-Sep-01_to_2020-Sep-03_298.5_-29.0"}, "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": 2020090000043}, "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 01 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 03 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": "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": 59579.534100821314}, "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": -29.0}, "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": 298.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "298.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 296.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 300.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -29.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -28.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-63.75, -28.5], [-63.53, -27.97], [-63.0, -27.75], [-62.75, -27.854], [-62.677, -27.823], [-62.53, -27.47], [-62.0, -27.25], [-61.75, -27.354], [-61.5, -27.25], [-61.25, -27.354], [-61.0, -27.25], [-60.47, -27.47], [-60.323, -27.823], [-60.0, -27.957], [-59.5, -27.75], [-58.97, -27.97], [-58.75, -28.5], [-58.97, -29.03], [-59.323, -29.177], [-59.47, -29.53], [-60.0, -29.75], [-60.25, -29.646], [-60.5, -29.75], [-60.75, -29.646], [-60.823, -29.677], [-60.97, -30.03], [-61.5, -30.25], [-61.75, -30.146], [-62.0, -30.25], [-62.25, -30.146], [-62.5, -30.25], [-62.75, -30.146], [-63.0, -30.25], [-63.25, -30.146], [-63.5, -30.25], [-64.03, -30.03], [-64.25, -29.5], [-64.03, -28.97], [-63.677, -28.823], [-63.646, -28.75], [-63.75, -28.5]]]}}, "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": {"2020-09-01T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-63.67677669529661, -28.82322330470336], [-63.64644660940672, -28.75], [-63.75, -28.5], [-63.53033008588989, -27.96966991411009], [-63.0, -27.75], [-62.75, -27.853553390593277], [-62.67677669529661, -27.82322330470336], [-62.53033008588989, -27.46966991411009], [-62.0, -27.25], [-61.75, -27.353553390593277], [-61.5, -27.25], [-61.25, -27.353553390593277], [-61.0, -27.25], [-60.46966991411011, -27.46966991411009], [-60.32322330470339, -27.82322330470336], [-60.0, -27.957106781186557], [-59.5, -27.75], [-58.96966991411011, -27.96966991411009], [-58.75, -28.5], [-58.96966991411011, -29.03033008588991], [-59.32322330470339, -29.17677669529664], [-59.46966991411011, -29.53033008588991], [-60.0, -29.75], [-60.25, -29.646446609406723], [-60.5, -29.75], [-60.75, -29.646446609406723], [-60.82322330470339, -29.67677669529664], [-60.96966991411011, -30.03033008588991], [-61.5, -30.25], [-61.75, -30.146446609406723], [-62.0, -30.25], [-62.25, -30.146446609406723], [-62.5, -30.25], [-62.75, -30.146446609406723], [-63.0, -30.25], [-63.25, -30.146446609406723], [-63.5, -30.25], [-64.03033008588989, -30.03033008588991], [-64.25, -29.5], [-64.03033008588989, -28.96966991411009], [-63.67677669529661, -28.82322330470336]]]}, "2020-09-02T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-63.67677669529661, -28.82322330470336], [-63.64644660940672, -28.75], [-63.75, -28.5], [-63.53033008588989, -27.96966991411009], [-63.0, -27.75], [-62.75, -27.853553390593277], [-62.67677669529661, -27.82322330470336], [-62.53033008588989, -27.46966991411009], [-62.0, -27.25], [-61.75, -27.353553390593277], [-61.5, -27.25], [-61.25, -27.353553390593277], [-61.0, -27.25], [-60.46966991411011, -27.46966991411009], [-60.32322330470339, -27.82322330470336], [-60.0, -27.957106781186557], [-59.5, -27.75], [-58.96966991411011, -27.96966991411009], [-58.75, -28.5], [-58.96966991411011, -29.03033008588991], [-59.32322330470339, -29.17677669529664], [-59.46966991411011, -29.53033008588991], [-60.0, -29.75], [-60.25, -29.646446609406723], 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"Mean t2m anomaly over entire duration", "value": -7.699893776837432}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.185801770861758, 9.665913523532197, 10.265595536116734]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.161964620649485, 8.823157137559463, 9.417543158924786]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.090269916659087, -7.693327575116254, -7.3160838387369544]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.014673586441177, -8.364437933908107, -7.9626704401630946]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5424205210240338, -1.4812256113138498, -1.4018379123409515]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6725367630618362, -1.567062611040565, -1.5164554549661278]}}