{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:10.030651", "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": "2012-Aug-18_to_2012-Aug-20_258.0_17.5"}, "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": 2012080000877}, "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 18 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 20 2012"}, "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": 91603.83758357377}, "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": ["Mexico"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-America", "S.Central-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": ["North Pacific 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": 17.5}, "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": 258.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "258.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 255.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 259.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.25, 18.5], [-105.03, 19.03], [-104.5, 19.25], [-104.25, 19.15], [-104.0, 19.25], [-103.47, 19.03], [-103.32, 18.68], [-103.25, 18.65], [-103.0, 18.75], [-102.75, 18.65], [-102.5, 18.75], [-102.25, 18.65], [-102.0, 18.75], [-101.47, 18.53], [-101.32, 18.18], [-100.97, 18.03], [-100.82, 17.68], [-100.47, 17.53], [-100.25, 17.0], [-100.35, 16.75], [-100.32, 16.68], [-99.97, 16.53], [-99.75, 16.0], [-99.97, 15.47], [-100.5, 15.25], [-100.75, 15.35], [-101.0, 15.25], [-101.5, 15.46], [-101.82, 15.32], [-101.97, 14.97], [-102.5, 14.75], [-103.03, 14.97], [-103.18, 15.32], [-103.53, 15.47], [-103.68, 15.82], [-104.03, 15.97], [-104.25, 16.5], [-104.15, 16.75], [-104.18, 16.82], [-104.53, 16.97], [-104.75, 17.5], [-104.65, 17.75], [-104.68, 17.82], [-105.03, 17.97], [-105.25, 18.5]]]]}, "2012-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.25, 18.5], [-105.03, 19.03], [-104.5, 19.25], [-104.25, 19.15], [-104.0, 19.25], [-103.47, 19.03], [-103.32, 18.68], [-103.25, 18.65], [-103.0, 18.75], [-102.75, 18.65], [-102.5, 18.75], [-102.25, 18.65], [-102.0, 18.75], [-101.47, 18.53], [-101.32, 18.18], [-100.97, 18.03], [-100.82, 17.68], [-100.47, 17.53], [-100.25, 17.0], [-100.35, 16.75], [-100.32, 16.68], [-99.97, 16.53], [-99.75, 16.0], [-99.97, 15.47], [-100.5, 15.25], [-100.75, 15.35], [-101.0, 15.25], [-101.5, 15.46], [-101.82, 15.32], [-101.97, 14.97], [-102.5, 14.75], [-103.03, 14.97], [-103.18, 15.32], [-103.53, 15.47], [-103.68, 15.82], [-104.03, 15.97], [-104.25, 16.5], [-104.15, 16.75], [-104.18, 16.82], [-104.53, 16.97], [-104.75, 17.5], [-104.65, 17.75], [-104.68, 17.82], [-105.03, 17.97], [-105.25, 18.5]]]]}, "2012-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.25, 18.5], [-105.03, 19.03], [-104.5, 19.25], [-104.25, 19.15], [-104.0, 19.25], [-103.47, 19.03], [-103.32, 18.68], [-103.25, 18.65], [-103.0, 18.75], [-102.75, 18.65], [-102.5, 18.75], [-102.25, 18.65], [-102.0, 18.75], [-101.47, 18.53], [-101.32, 18.18], [-100.97, 18.03], [-100.82, 17.68], [-100.47, 17.53], [-100.25, 17.0], [-100.35, 16.75], [-100.32, 16.68], [-99.97, 16.53], [-99.75, 16.0], [-99.97, 15.47], [-100.5, 15.25], [-100.75, 15.35], [-101.0, 15.25], [-101.5, 15.46], [-101.82, 15.32], [-101.97, 14.97], [-102.5, 14.75], [-103.03, 14.97], [-103.18, 15.32], [-103.53, 15.47], [-103.68, 15.82], [-104.03, 15.97], [-104.25, 16.5], [-104.15, 16.75], [-104.18, 16.82], [-104.53, 16.97], [-104.75, 17.5], [-104.65, 17.75], [-104.68, 17.82], [-105.03, 17.97], [-105.25, 18.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.3578407929992977}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.750101947452391}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.41676969400487, 26.06918250991771, 26.096038388286843]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.524115817814447, 24.82280334758002, 25.19177028654127]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5464876807624452, -1.872547203948575, -1.8312709576461526]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.931914121829891, -2.3578407929992977, -2.172574531875398]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5861308423514215, -1.9270685642697183, -1.892055598482147]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.953084310299161, -2.3646169487560473, -2.178735520010792]}}