{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:07.321641", "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": "2015-Jan-23_to_2015-Jan-25_255.5_25.0"}, "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": 2015010001103}, "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": "January 23 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 25 2015"}, "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": 64255.63300430788}, "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"]}, "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": []}, "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": 25.0}, "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": 255.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "255.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 254.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 258.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.65, 25.25], [-105.75, 25.5], [-105.65, 25.75], [-105.75, 26.0], [-105.65, 26.25], [-105.75, 26.5], [-105.53, 27.03], [-105.0, 27.25], [-104.75, 27.15], [-104.5, 27.25], [-104.25, 27.15], [-104.0, 27.25], [-103.75, 27.15], [-103.5, 27.25], [-102.97, 27.03], [-102.75, 26.5], [-102.85, 26.25], [-102.8, 26.12], [-102.5, 26.25], [-101.97, 26.03], [-101.82, 25.68], [-101.47, 25.53], [-101.25, 25.0], [-101.47, 24.47], [-101.87, 24.3], [-101.75, 24.0], [-101.97, 23.47], [-102.5, 23.25], [-102.75, 23.35], [-103.0, 23.25], [-103.53, 23.47], [-103.68, 23.82], [-103.75, 23.85], [-104.0, 23.75], [-104.25, 23.85], [-104.5, 23.75], [-104.75, 23.85], [-105.0, 23.75], [-105.53, 23.97], [-105.75, 24.5], [-105.65, 24.75], [-105.75, 25.0], [-105.65, 25.25]]]]}, "2015-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.65, 25.25], [-105.75, 25.5], [-105.65, 25.75], [-105.75, 26.0], [-105.65, 26.25], [-105.75, 26.5], [-105.53, 27.03], [-105.0, 27.25], [-104.75, 27.15], [-104.5, 27.25], [-104.25, 27.15], [-104.0, 27.25], [-103.75, 27.15], [-103.5, 27.25], [-102.97, 27.03], [-102.75, 26.5], [-102.85, 26.25], [-102.8, 26.12], [-102.5, 26.25], [-101.97, 26.03], [-101.82, 25.68], [-101.47, 25.53], [-101.25, 25.0], [-101.47, 24.47], [-101.87, 24.3], [-101.75, 24.0], [-101.97, 23.47], [-102.5, 23.25], [-102.75, 23.35], [-103.0, 23.25], [-103.53, 23.47], [-103.68, 23.82], [-103.75, 23.85], [-104.0, 23.75], [-104.25, 23.85], [-104.5, 23.75], [-104.75, 23.85], [-105.0, 23.75], [-105.53, 23.97], [-105.75, 24.5], [-105.65, 24.75], [-105.75, 25.0], [-105.65, 25.25]]]]}, "2015-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.65, 25.25], [-105.75, 25.5], [-105.65, 25.75], [-105.75, 26.0], [-105.65, 26.25], [-105.75, 26.5], [-105.53, 27.03], [-105.0, 27.25], [-104.75, 27.15], [-104.5, 27.25], [-104.25, 27.15], [-104.0, 27.25], [-103.75, 27.15], [-103.5, 27.25], [-102.97, 27.03], [-102.75, 26.5], [-102.85, 26.25], [-102.8, 26.12], [-102.5, 26.25], [-101.97, 26.03], [-101.82, 25.68], [-101.47, 25.53], [-101.25, 25.0], [-101.47, 24.47], [-101.87, 24.3], [-101.75, 24.0], [-101.97, 23.47], [-102.5, 23.25], [-102.75, 23.35], [-103.0, 23.25], [-103.53, 23.47], [-103.68, 23.82], [-103.75, 23.85], [-104.0, 23.75], [-104.25, 23.85], [-104.5, 23.75], [-104.75, 23.85], [-105.0, 23.75], [-105.53, 23.97], [-105.75, 24.5], [-105.65, 24.75], [-105.75, 25.0], [-105.65, 25.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.941347697309084}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.005810026084141}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [8.737547479186617, 6.893649772777621, 8.559298051890607]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [4.5963538918479685, 4.457839714576835, 5.1113545859510054]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.312227829810789, -6.208890867014477, -4.49631138142716]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.791307586970447, -7.941347697309084, -6.036325689816806]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.641067331241975, -2.3363049365843245, -1.6023978393909948]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1194228066036436, -2.7344738270460436, -1.9164978458376767]}}