{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:25:11.117828", "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-Jun-16_to_2021-Jun-19_301.0_-40.0"}, "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": 2021060000709}, "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": "June 16 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 19 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 83139.7283474998}, "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": ["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": -40.0}, "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": 301.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "301.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 299.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 302.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -41.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -37.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-58.354, -40.751], [-58.25, -41.0], [-58.354, -41.25], [-58.25, -41.5], [-58.47, -42.03], [-59.0, -42.25], [-59.25, -42.146], [-59.5, -42.25], [-60.0, -42.043], [-60.5, -42.25], [-61.03, -42.03], [-61.25, -41.5], [-61.146, -41.25], [-61.177, -41.177], [-61.53, -41.03], [-61.75, -40.5], [-61.646, -40.25], [-61.75, -40.0], [-61.646, -39.75], [-61.75, -39.5], [-61.53, -38.97], [-61.177, -38.823], [-61.03, -38.47], [-60.5, -38.25], [-60.25, -38.354], [-60.177, -38.323], [-60.03, -37.97], [-59.677, -37.823], [-59.53, -37.47], [-59.177, -37.323], [-59.03, -36.97], [-58.5, -36.75], [-57.97, -36.97], [-57.75, -37.5], [-57.854, -37.75], [-57.75, -38.0], [-57.854, -38.25], [-57.823, -38.323], [-57.47, -38.47], [-57.25, -39.0], [-57.47, -39.53], [-57.823, -39.677], [-57.854, -39.75], [-57.75, -40.0], [-57.97, -40.53], [-58.323, -40.677], [-58.354, -40.75], [-58.354, -40.751]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.South-America", "S.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-06-16T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-60.14644660940672, -41.25], [-60.25, -41.0], [-60.14644660940672, -40.75], [-60.25, -40.5], [-60.03033008588989, -39.96966991411009], [-59.67677669529661, -39.82322330470336], [-59.53033008588989, -39.46966991411009], [-59.0, -39.25], [-58.46966991411011, -39.46966991411009], [-58.25, -40.0], [-58.35355339059328, -40.25], [-58.25, -40.5], [-58.35355339059328, -40.75], [-58.25, -41.0], [-58.35355339059328, -41.25], [-58.25, -41.5], [-58.46966991411011, -42.03033008588991], [-59.0, -42.25], [-59.25, -42.14644660940672], [-59.5, -42.25], [-60.03033008588989, -42.03033008588991], [-60.25, -41.5], [-60.14644660940672, -41.25]]]}, "2021-06-17T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-61.64644660940672, -40.25], [-61.75, -40.0], [-61.64644660940672, -39.75], [-61.75, -39.5], [-61.53033008588989, -38.96966991411009], [-61.17677669529661, -38.82322330470336], 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3.4483764678862485, 3.6772930130886152]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.919945296442823, -2.830804691359677, -2.64601539744154, -2.886996230909306]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.0334728243935842, -5.048082114433328, -4.557419629331321, -4.184462091240505]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3308100589226335, -1.6172091018192951, -1.5158336436723805, -1.6601363311816129]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3848360376696458, -1.8775418277663254, -1.739975503777231, -1.9875517311263522]}}