{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:14:03.155652", "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-Jun-26_to_2020-Jun-28_295.5_-41.5"}, "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": 2020060000856}, "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 26 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 28 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": 55200.94425045205}, "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": -41.5}, "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": 295.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "295.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 292.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 297.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -43.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -41.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-68.146, -41.75], [-68.25, -41.5], [-68.03, -40.97], [-67.5, -40.75], [-67.25, -40.854], [-67.0, -40.75], [-66.75, -40.854], [-66.5, -40.75], [-66.25, -40.854], [-66.0, -40.75], [-65.698, -40.875], [-65.53, -40.47], [-65.0, -40.25], [-64.47, -40.47], [-64.323, -40.823], [-64.25, -40.854], [-64.0, -40.75], [-63.75, -40.854], [-63.5, -40.75], [-63.25, -40.854], [-63.0, -40.75], [-62.47, -40.97], [-62.25, -41.5], [-62.47, -42.03], [-62.823, -42.177], [-62.97, -42.53], [-63.375, -42.698], [-63.25, -43.0], [-63.47, -43.53], [-64.0, -43.75], [-64.25, -43.646], [-64.5, -43.75], [-65.03, -43.53], [-65.25, -43.0], [-65.146, -42.75], [-65.177, -42.677], [-65.25, -42.646], [-65.5, -42.75], [-65.75, -42.646], [-65.823, -42.677], [-65.97, -43.03], [-66.5, -43.25], [-67.0, -43.043], [-67.5, -43.25], [-68.03, -43.03], [-68.25, -42.5], [-68.146, -42.25], [-68.25, -42.0], [-68.146, -41.75]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-06-26T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-68.14644660940672, -42.25], [-68.25, -42.0], [-68.14644660940672, -41.75], [-68.25, -41.5], [-68.03033008588989, -40.96966991411009], [-67.5, -40.75], [-67.25, -40.85355339059328], [-67.0, -40.75], [-66.75, -40.85355339059328], [-66.5, -40.75], [-66.25, -40.85355339059328], [-66.0, -40.75], [-65.69822330470333, -40.87500000000001], [-65.53033008588989, -40.46966991411009], [-65.0, -40.25], [-64.46966991411011, -40.46966991411009], [-64.32322330470339, -40.82322330470336], [-64.25, -40.85355339059328], [-64.0, -40.75], [-63.75, -40.85355339059328], [-63.5, -40.75], [-63.25, -40.85355339059328], [-63.0, -40.75], [-62.46966991411011, -40.96966991411009], [-62.25, -41.5], [-62.46966991411011, -42.03033008588991], [-62.82322330470339, -42.17677669529664], [-62.96966991411011, -42.53033008588991], [-63.375, -42.69822330470337], [-63.25, -43.0], [-63.46966991411011, -43.53033008588991], [-64.0, 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"description": "The daily evolution of maximum t2m.", "value": [-4.62764551975539, -4.840966085405114, -4.8603368518658385]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.408463590740453, -4.6826294236641575, -5.137302875427568]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.242305028291696, -6.742039668055611, -8.05130384378549]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6724647377388526, -1.6674347546152308, -1.7149475922217956]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0431646934330785, -2.0358013536880173, -2.0940532041517566]}}