{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:17:54.556254", "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-Aug-23_to_2020-Aug-25_306.5_-2.0"}, "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": 2020080000799}, "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": "August 23 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 25 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": 135931.9928246653}, "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"]}, "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": -2.0}, "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": 306.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "306.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 303.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 308.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 0.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-57.03, -1.47], [-56.677, -1.323], [-56.53, -0.97], [-56.177, -0.823], [-56.146, -0.75], [-56.25, -0.5], [-56.146, -0.25], [-56.25, 0.0], [-56.03, 0.53], [-55.5, 0.75], [-55.25, 0.646], [-55.0, 0.75], [-54.47, 0.53], [-54.323, 0.177], [-53.97, 0.03], [-53.823, -0.323], [-53.75, -0.354], [-53.5, -0.25], [-53.25, -0.354], [-53.0, -0.25], [-52.75, -0.354], [-52.5, -0.25], [-51.97, -0.47], [-51.823, -0.823], [-51.47, -0.97], [-51.25, -1.5], [-51.354, -1.75], [-51.25, -2.0], [-51.354, -2.25], [-51.25, -2.5], [-51.47, -3.03], [-52.0, -3.25], [-52.25, -3.146], [-52.323, -3.177], [-52.47, -3.53], [-53.0, -3.75], [-53.25, -3.646], [-53.5, -3.75], [-53.75, -3.646], [-54.0, -3.75], [-54.25, -3.646], [-54.5, -3.75], [-55.03, -3.53], [-55.198, -3.125], [-55.5, -3.25], [-55.75, -3.146], [-56.0, -3.25], [-56.25, -3.146], [-56.5, -3.25], [-57.03, -3.03], [-57.25, -2.5], [-57.146, -2.25], [-57.25, -2.0], [-57.03, -1.47]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-08-23T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-57.14644660940672, -2.25], [-57.25, -2.0], [-57.03033008588989, -1.4696699141100895], [-56.67677669529661, -1.3232233047033632], [-56.53033008588989, -0.9696699141100894], [-56.17677669529661, -0.8232233047033631], [-56.14644660940672, -0.75], [-56.25, -0.5], [-56.14644660940672, -0.25], [-56.25, 0.0], [-56.03033008588989, 0.5303300858899106], [-55.5, 0.75], [-55.25, 0.6464466094067215], [-55.0, 0.75], [-54.46966991411011, 0.5303300858899107], [-54.32322330470339, 0.1767766952966369], [-53.96966991411011, 0.030330085889910707], [-53.82322330470339, -0.3232233047033631], [-53.75, -0.35355339059327845], [-53.5, -0.25], [-53.25, -0.35355339059327845], [-53.0, -0.25], [-52.75, -0.35355339059327845], [-52.5, -0.25], [-51.96966991411011, -0.4696699141100893], [-51.82322330470339, -0.8232233047033631], [-51.46966991411011, -0.9696699141100893], [-51.25, -1.5], 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[-2.693041492422708, -3.9558134202385418, -2.893424021604403]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.2225604869152424, -4.170135550172467, -2.525008238171461]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.8340265541654444, -5.684226524087696, -4.042133245752145]}}