{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:21.707090", "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": "2011-May-03_to_2011-May-05_261.0_20.5"}, "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": 2011050000302}, "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": "May 03 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 05 2011"}, "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": 83430.19675393854}, "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": []}, "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": 20.5}, "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": 261.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "261.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 257.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 262.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 19.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.75, 22.5], [-102.53, 23.03], [-102.18, 23.18], [-102.03, 23.53], [-101.5, 23.75], [-101.25, 23.65], [-101.0, 23.75], [-100.75, 23.65], [-100.5, 23.75], [-99.97, 23.53], [-99.82, 23.18], [-99.47, 23.03], [-99.25, 22.5], [-99.35, 22.25], [-99.32, 22.18], [-98.97, 22.03], [-98.82, 21.68], [-98.75, 21.65], [-98.5, 21.75], [-97.97, 21.53], [-97.75, 21.0], [-97.85, 20.75], [-97.82, 20.68], [-97.75, 20.65], [-97.5, 20.75], [-96.97, 20.53], [-96.75, 20.0], [-96.85, 19.75], [-96.75, 19.5], [-96.97, 18.97], [-97.5, 18.75], [-98.03, 18.97], [-98.18, 19.32], [-98.25, 19.35], [-98.5, 19.25], [-98.75, 19.35], [-99.0, 19.25], [-99.53, 19.47], [-99.68, 19.82], [-100.03, 19.97], [-100.18, 20.32], [-100.25, 20.35], [-100.5, 20.25], [-101.03, 20.47], [-101.18, 20.82], [-101.53, 20.97], [-101.68, 21.32], [-102.03, 21.47], [-102.18, 21.82], [-102.53, 21.97], [-102.75, 22.5]]]]}, "2011-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.75, 22.5], [-102.53, 23.03], [-102.18, 23.18], [-102.03, 23.53], [-101.5, 23.75], [-101.25, 23.65], [-101.0, 23.75], [-100.75, 23.65], [-100.5, 23.75], [-99.97, 23.53], [-99.82, 23.18], [-99.47, 23.03], [-99.25, 22.5], [-99.35, 22.25], [-99.32, 22.18], [-98.97, 22.03], [-98.82, 21.68], [-98.75, 21.65], [-98.5, 21.75], [-97.97, 21.53], [-97.75, 21.0], [-97.85, 20.75], [-97.82, 20.68], [-97.75, 20.65], [-97.5, 20.75], [-96.97, 20.53], [-96.75, 20.0], [-96.85, 19.75], [-96.75, 19.5], [-96.97, 18.97], [-97.5, 18.75], [-98.03, 18.97], [-98.18, 19.32], [-98.25, 19.35], [-98.5, 19.25], [-98.75, 19.35], [-99.0, 19.25], [-99.53, 19.47], [-99.68, 19.82], [-100.03, 19.97], [-100.18, 20.32], [-100.25, 20.35], [-100.5, 20.25], [-101.03, 20.47], [-101.18, 20.82], [-101.53, 20.97], [-101.68, 21.32], [-102.03, 21.47], [-102.18, 21.82], [-102.53, 21.97], [-102.75, 22.5]]]]}, "2011-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-102.75, 22.5], [-102.53, 23.03], [-102.18, 23.18], [-102.03, 23.53], [-101.5, 23.75], [-101.25, 23.65], [-101.0, 23.75], [-100.75, 23.65], [-100.5, 23.75], [-99.97, 23.53], [-99.82, 23.18], [-99.47, 23.03], [-99.25, 22.5], [-99.35, 22.25], [-99.32, 22.18], [-98.97, 22.03], [-98.82, 21.68], [-98.75, 21.65], [-98.5, 21.75], [-97.97, 21.53], [-97.75, 21.0], [-97.85, 20.75], [-97.82, 20.68], [-97.75, 20.65], [-97.5, 20.75], [-96.97, 20.53], [-96.75, 20.0], [-96.85, 19.75], [-96.75, 19.5], [-96.97, 18.97], [-97.5, 18.75], [-98.03, 18.97], [-98.18, 19.32], [-98.25, 19.35], [-98.5, 19.25], [-98.75, 19.35], [-99.0, 19.25], [-99.53, 19.47], [-99.68, 19.82], [-100.03, 19.97], [-100.18, 20.32], [-100.25, 20.35], [-100.5, 20.25], [-101.03, 20.47], [-101.18, 20.82], [-101.53, 20.97], [-101.68, 21.32], [-102.03, 21.47], [-102.18, 21.82], [-102.53, 21.97], [-102.75, 22.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.062341916690457}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.645230818255243}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.438462549153257, 14.776593714102262, 17.037339745505108]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.374129878817428, 10.939826173139977, 12.959041534602079]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.246158476655387, -5.946443552722183, -3.7430904253881594]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.503599209992899, -7.062341916690457, -4.4465516529158435]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8049425719869792, -2.5822412957794083, -1.5921015806893002]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.141286884282608, -2.994566080224928, -1.8250584164377883]}}