{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:19:47.131490", "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-Dec-05_to_2020-Dec-07_306.0_-31.0"}, "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": 2020120000272}, "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": "December 05 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 07 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": 50129.73027641356}, "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": ["Brazil", "Uruguay"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": -31.0}, "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": 306.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "306.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 305.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 307.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -32.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -30.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-55.646, -30.75], [-55.75, -30.5], [-55.53, -29.97], [-55.0, -29.75], [-54.75, -29.854], [-54.5, -29.75], [-54.25, -29.854], [-54.0, -29.75], [-53.47, -29.97], [-53.323, -30.323], [-53.25, -30.354], [-53.0, -30.25], [-52.47, -30.47], [-52.25, -31.0], [-52.354, -31.25], [-52.323, -31.323], [-51.97, -31.47], [-51.75, -32.0], [-51.97, -32.53], [-52.5, -32.75], [-52.75, -32.646], [-52.823, -32.677], [-52.97, -33.03], [-53.5, -33.25], [-54.03, -33.03], [-54.177, -32.677], [-54.25, -32.646], [-54.5, -32.75], [-55.03, -32.53], [-55.177, -32.177], [-55.53, -32.03], [-55.75, -31.5], [-55.646, -31.25], [-55.75, -31.0], [-55.646, -30.75]]]}}, "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": {"2020-12-05T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-55.64644660940672, -31.25], [-55.75, -31.0], [-55.64644660940672, -30.75], [-55.75, -30.5], [-55.53033008588989, -29.96966991411009], [-55.0, -29.75], [-54.75, -29.853553390593277], [-54.5, -29.75], [-54.25, -29.853553390593277], [-54.0, -29.75], [-53.46966991411011, -29.96966991411009], [-53.32322330470339, -30.32322330470336], [-53.25, -30.353553390593277], [-53.0, -30.25], [-52.46966991411011, -30.46966991411009], [-52.25, -31.0], [-52.35355339059328, -31.25], [-52.32322330470339, -31.32322330470336], [-51.96966991411011, -31.46966991411009], [-51.75, -32.0], [-51.96966991411011, -32.53033008588991], [-52.5, -32.75], [-52.75, -32.64644660940672], [-52.82322330470339, -32.67677669529664], [-52.96966991411011, -33.03033008588991], [-53.5, -33.25], [-54.03033008588989, -33.03033008588991], [-54.17677669529661, -32.67677669529664], [-54.25, -32.64644660940672], [-54.5, -32.75], [-55.03033008588989, -32.53033008588991], [-55.17677669529661, -32.17677669529664], [-55.53033008588989, -32.03033008588991], [-55.75, -31.5], [-55.64644660940672, -31.25]]]}, "2020-12-06T11:30:00.000000000": {"type": "Polygon", "coordinates": 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-32.03033008588991], [-55.75, -31.5], [-55.64644660940672, -31.25]]]}, "2020-12-07T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-55.64644660940672, -31.25], [-55.75, -31.0], [-55.64644660940672, -30.75], [-55.75, -30.5], [-55.53033008588989, -29.96966991411009], [-55.0, -29.75], [-54.75, -29.853553390593277], [-54.5, -29.75], [-54.25, -29.853553390593277], [-54.0, -29.75], [-53.46966991411011, -29.96966991411009], [-53.32322330470339, -30.32322330470336], [-53.25, -30.353553390593277], [-53.0, -30.25], [-52.46966991411011, -30.46966991411009], [-52.25, -31.0], [-52.35355339059328, -31.25], [-52.32322330470339, -31.32322330470336], [-51.96966991411011, -31.46966991411009], [-51.75, -32.0], [-51.96966991411011, -32.53033008588991], [-52.5, -32.75], [-52.75, -32.64644660940672], [-52.82322330470339, -32.67677669529664], [-52.96966991411011, -33.03033008588991], [-53.5, -33.25], [-54.03033008588989, -33.03033008588991], [-54.17677669529661, -32.67677669529664], [-54.25, 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-4.558751852638995, -3.8860251168426165]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.44925522812315, -5.190774908297499, -4.361136183718486]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6580051727310936, -1.795926936552334, -1.5237268454270902]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.80077829105045, -1.9999676887188922, -1.7003364288959024]}}