{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:18:51.469526", "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-Feb-26_to_2020-Feb-29_259.5_23.5"}, "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": 2020020000749}, "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": "February 26 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 29 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 81288.58233943676}, "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": 23.5}, "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": 259.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "259.5\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": 260.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 27.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.03, 27.03], [-104.5, 27.25], [-104.25, 27.15], [-104.18, 27.18], [-104.03, 27.53], [-103.5, 27.75], [-102.97, 27.53], [-102.75, 27.0], [-102.97, 26.47], [-103.32, 26.32], [-103.35, 26.25], [-103.25, 26.0], [-103.35, 25.75], [-103.32, 25.68], [-103.25, 25.65], [-103.18, 25.68], [-103.03, 26.03], [-102.5, 26.25], [-102.0, 26.04], [-101.5, 26.25], [-101.25, 26.15], [-101.0, 26.25], [-100.75, 26.15], [-100.5, 26.25], [-99.97, 26.03], [-99.75, 25.5], [-99.85, 25.25], [-99.82, 25.18], [-99.47, 25.03], [-99.32, 24.68], [-98.97, 24.53], [-98.75, 24.0], [-98.85, 23.75], [-98.75, 23.5], [-98.97, 22.97], [-99.5, 22.75], [-99.75, 22.85], [-100.0, 22.75], [-100.25, 22.85], [-100.5, 22.75], [-100.75, 22.85], [-101.0, 22.75], [-101.53, 22.97], [-101.75, 23.5], [-101.65, 23.75], [-101.75, 24.0], [-101.62, 24.3], [-101.75, 24.35], [-101.82, 24.32], [-101.97, 23.97], [-102.5, 23.75], [-102.75, 23.85], [-103.0, 23.75], [-103.25, 23.85], [-103.5, 23.75], [-104.03, 23.97], [-104.18, 24.32], [-104.53, 24.47], [-104.75, 25.0], [-104.65, 25.25], [-104.68, 25.32], [-105.03, 25.47], [-105.25, 26.0], [-105.15, 26.25], [-105.25, 26.5], [-105.03, 27.03]]]]}, "2020-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.03, 27.03], [-104.5, 27.25], [-104.25, 27.15], [-104.18, 27.18], [-104.03, 27.53], [-103.5, 27.75], [-102.97, 27.53], [-102.75, 27.0], [-102.97, 26.47], [-103.32, 26.32], [-103.35, 26.25], [-103.25, 26.0], [-103.35, 25.75], [-103.32, 25.68], [-103.25, 25.65], [-103.18, 25.68], [-103.03, 26.03], [-102.5, 26.25], [-102.0, 26.04], [-101.5, 26.25], [-101.25, 26.15], [-101.0, 26.25], [-100.75, 26.15], [-100.5, 26.25], [-99.97, 26.03], [-99.75, 25.5], [-99.85, 25.25], [-99.82, 25.18], [-99.47, 25.03], [-99.32, 24.68], [-98.97, 24.53], [-98.75, 24.0], [-98.85, 23.75], [-98.75, 23.5], [-98.97, 22.97], [-99.5, 22.75], [-99.75, 22.85], [-100.0, 22.75], [-100.25, 22.85], [-100.5, 22.75], [-100.75, 22.85], [-101.0, 22.75], [-101.53, 22.97], [-101.75, 23.5], [-101.65, 23.75], [-101.75, 24.0], [-101.62, 24.3], [-101.75, 24.35], [-101.82, 24.32], [-101.97, 23.97], [-102.5, 23.75], [-102.75, 23.85], [-103.0, 23.75], [-103.25, 23.85], [-103.5, 23.75], [-104.03, 23.97], [-104.18, 24.32], [-104.53, 24.47], [-104.75, 25.0], [-104.65, 25.25], [-104.68, 25.32], [-105.03, 25.47], [-105.25, 26.0], [-105.15, 26.25], [-105.25, 26.5], [-105.03, 27.03]]]]}, "2020-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.03, 27.03], [-104.5, 27.25], [-104.25, 27.15], [-104.18, 27.18], [-104.03, 27.53], [-103.5, 27.75], [-102.97, 27.53], [-102.75, 27.0], [-102.97, 26.47], [-103.32, 26.32], [-103.35, 26.25], [-103.25, 26.0], [-103.35, 25.75], [-103.32, 25.68], [-103.25, 25.65], [-103.18, 25.68], [-103.03, 26.03], [-102.5, 26.25], [-102.0, 26.04], [-101.5, 26.25], [-101.25, 26.15], [-101.0, 26.25], [-100.75, 26.15], [-100.5, 26.25], [-99.97, 26.03], [-99.75, 25.5], [-99.85, 25.25], [-99.82, 25.18], [-99.47, 25.03], [-99.32, 24.68], [-98.97, 24.53], [-98.75, 24.0], [-98.85, 23.75], [-98.75, 23.5], [-98.97, 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"Mean t2m anomaly over entire duration", "value": -6.269736002336277}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.132220521647241, 8.23132564449918, 11.335679040737546, 11.825684416069862]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.3819931967227035, 4.042092380928523, 6.9523423198654655, 11.825684416069862]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.377307157631958, -8.273018881674107, -5.2332540697599175, -4.112945042678746]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.858100555993758, -9.617217873841298, -6.955240520999212, -4.112945042678746]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7237896470531415, -2.627103904937765, -1.674890149141824, -1.4359809258469058]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2010494873097577, -3.295019999071309, -2.303338616466966, -1.4359809258469058]}}