{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:12:54.317274", "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-Aug-28_to_2021-Sep-01_290.0_10.5"}, "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": 2021080001189}, "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 28 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 01 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 60798.66590452607}, "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": ["Colombia", "Venezuela, Bolivarian Republic of"]}, "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": 10.5}, "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": 290.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "290.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 287.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 291.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 11.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-73.53, 11.03], [-73.0, 11.25], [-72.75, 11.15], [-72.5, 11.25], [-72.25, 11.15], [-72.0, 11.25], [-71.75, 11.15], [-71.68, 11.18], [-71.53, 11.53], [-71.0, 11.75], [-70.7, 11.62], [-70.53, 12.03], [-70.0, 12.25], [-69.47, 12.03], [-69.32, 11.68], [-69.25, 11.65], [-69.0, 11.75], [-68.47, 11.53], [-68.25, 11.0], [-68.47, 10.47], [-68.82, 10.32], [-68.97, 9.97], [-69.32, 9.82], [-69.47, 9.47], [-70.0, 9.25], [-70.25, 9.35], [-70.32, 9.32], [-70.47, 8.97], [-71.0, 8.75], [-71.53, 8.97], [-71.75, 9.5], [-71.65, 9.75], [-71.68, 9.82], [-71.75, 9.85], [-71.82, 9.82], [-71.97, 9.47], [-72.32, 9.32], [-72.47, 8.97], [-73.0, 8.75], [-73.53, 8.97], [-73.75, 9.5], [-73.65, 9.75], [-73.75, 10.0], [-73.65, 10.25], [-73.75, 10.5], [-73.53, 11.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Caribbean", "N.W.South-America", "N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.75, 10.5], [-70.54000000000002, 11.0], [-70.75, 11.5], [-70.52999999999997, 12.03], [-70.0, 12.25], [-69.47000000000003, 12.03], [-69.32, 11.68], [-69.25, 11.65], [-69.0, 11.75], [-68.47000000000003, 11.53], [-68.25, 11.0], [-68.47000000000003, 10.47], [-68.82, 10.32], [-68.97000000000003, 9.97], [-69.5, 9.75], [-69.75, 9.85], [-70.0, 9.75], [-70.43, 9.93], [-70.25, 9.5], [-70.47000000000003, 8.97], [-71.0, 8.75], [-71.52999999999997, 8.97], [-71.75, 9.5], [-71.52999999999997, 10.03], [-71.0, 10.25], [-70.57, 10.07], [-70.75, 10.5]]]]}, "2021-08-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.75, 10.5], [-70.54000000000002, 11.0], [-70.75, 11.5], [-70.52999999999997, 12.03], [-70.0, 12.25], [-69.47000000000003, 12.03], [-69.32, 11.68], [-69.25, 11.65], [-69.0, 11.75], [-68.47000000000003, 11.53], [-68.25, 11.0], [-68.47000000000003, 10.47], [-68.82, 10.32], [-68.97000000000003, 9.97], [-69.5, 9.75], [-69.75, 9.85], [-70.0, 9.75], [-70.43, 9.93], [-70.25, 9.5], [-70.47000000000003, 8.97], [-71.0, 8.75], [-71.52999999999997, 8.97], [-71.75, 9.5], [-71.52999999999997, 10.03], [-71.0, 10.25], [-70.57, 10.07], [-70.75, 10.5]]]]}, "2021-08-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.75, 10.0], [-73.64999999999998, 10.25], [-73.75, 10.5], [-73.52999999999997, 11.03], [-73.0, 11.25], [-72.75, 11.15], [-72.5, 11.25], [-72.25, 11.15], [-72.0, 11.25], [-71.75, 11.15], [-71.68, 11.18], [-71.52999999999997, 11.53], [-71.0, 11.75], [-70.69999999999999, 11.62], [-70.52999999999997, 12.03], [-70.0, 12.25], [-69.47000000000003, 12.03], [-69.32, 11.68], [-69.25, 11.65], [-69.0, 11.75], [-68.47000000000003, 11.53], [-68.25, 11.0], [-68.47000000000003, 10.47], [-68.82, 10.32], [-68.97000000000003, 9.97], [-69.32, 9.82], [-69.47000000000003, 9.47], [-70.0, 9.25], [-70.25, 9.35], [-70.32, 9.32], [-70.47000000000003, 8.97], [-71.0, 8.75], [-71.52999999999997, 8.97], [-71.75, 9.5], [-71.64999999999998, 9.75], [-71.68, 9.82], [-71.75, 9.85], [-71.82, 9.82], [-71.97000000000003, 9.47], [-72.32, 9.32], [-72.47000000000003, 8.97], [-73.0, 8.75], [-73.52999999999997, 8.97], [-73.75, 9.5], [-73.64999999999998, 9.75], [-73.75, 10.0]]]]}, "2021-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.75, 10.0], [-73.64999999999998, 10.25], [-73.75, 10.5], [-73.52999999999997, 11.03], [-73.0, 11.25], [-72.75, 11.15], [-72.5, 11.25], [-72.25, 11.15], [-72.0, 11.25], [-71.75, 11.15], [-71.68, 11.18], [-71.52999999999997, 11.53], [-71.0, 11.75], [-70.69999999999999, 11.62], [-70.52999999999997, 12.03], [-70.0, 12.25], [-69.47000000000003, 12.03], [-69.32, 11.68], [-69.25, 11.65], [-69.0, 11.75], [-68.47000000000003, 11.53], [-68.25, 11.0], [-68.47000000000003, 10.47], [-68.82, 10.32], [-68.97000000000003, 9.97], [-69.32, 9.82], [-69.47000000000003, 9.47], [-70.0, 9.25], [-70.25, 9.35], [-70.32, 9.32], [-70.47000000000003, 8.97], [-71.0, 8.75], [-71.52999999999997, 8.97], [-71.75, 9.5], 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9.85], [-71.82, 9.82], [-71.97000000000003, 9.47], [-72.32, 9.32], [-72.47000000000003, 8.97], [-73.0, 8.75], [-73.52999999999997, 8.97], [-73.75, 9.5], [-73.64999999999998, 9.75], [-73.75, 10.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.480194639778688}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.9246509197070334}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.264050433989098, 26.336010977479475, 25.259162844458785, 24.868987897617103, 24.99037007823148]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.11180173149677, 25.155002057772208, 20.29160532640293, 19.279837684910262, 20.0566956616521]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5103841554288617, -1.472811208169361, -1.8170295869334894, -2.216241791210817, -2.013900806782932]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8824518795692597, -1.6462454463482459, -2.649885655957462, -3.3610887390370294, -3.480194639778688]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5386549584932048, -1.5479304766743303, -1.7837216396785813, -2.1688559633526827, -1.8364264308923397]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.81414818209589, -1.6443906932657204, -2.7270567324704458, -2.73231037096106, -2.3160364800614914]}}