{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:53.046487", "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-Jan-11_to_2021-Jan-13_256.5_24.5"}, "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": 2021010000510}, "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 11 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 13 2021"}, "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": 207818.99094422185}, "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": 24.5}, "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": 256.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "256.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 252.75}, "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": 23.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.65, 27.25], [-107.75, 27.5], [-107.53, 28.03], [-107.18, 28.18], [-107.03, 28.53], [-106.62, 28.7], [-106.75, 29.0], [-106.53, 29.53], [-106.0, 29.75], [-105.47, 29.53], [-105.32, 29.18], [-105.0, 29.04], [-104.5, 29.25], [-103.97, 29.03], [-103.82, 28.68], [-103.75, 28.65], [-103.68, 28.68], [-103.53, 29.03], [-103.0, 29.25], [-102.47, 29.03], [-102.25, 28.5], [-102.46, 28.0], [-102.25, 27.5], [-102.35, 27.25], [-102.25, 27.0], [-102.43, 26.57], [-102.0, 26.75], [-101.47, 26.53], [-101.32, 26.18], [-101.25, 26.15], [-101.0, 26.25], [-100.75, 26.15], [-100.5, 26.25], [-99.97, 26.03], [-99.75, 25.5], [-99.97, 24.97], [-100.5, 24.75], [-100.75, 24.85], [-100.82, 24.82], [-100.97, 24.47], [-101.32, 24.32], [-101.47, 23.97], [-101.82, 23.82], [-101.97, 23.47], [-102.5, 23.25], [-102.75, 23.35], [-103.0, 23.25], [-103.25, 23.35], [-103.5, 23.25], [-104.03, 23.47], [-104.18, 23.82], [-104.25, 23.85], [-104.5, 23.75], [-105.03, 23.97], [-105.18, 24.32], [-105.25, 24.35], [-105.5, 24.25], [-106.03, 24.47], [-106.18, 24.82], [-106.53, 24.97], [-106.75, 25.5], [-106.65, 25.75], [-106.68, 25.82], [-106.75, 25.85], [-107.0, 25.75], [-107.53, 25.97], [-107.75, 26.5], [-107.65, 26.75], [-107.75, 27.0], [-107.65, 27.25]]]]}, "2021-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.65, 27.25], [-107.75, 27.5], [-107.53, 28.03], [-107.18, 28.18], [-107.03, 28.53], [-106.62, 28.7], [-106.75, 29.0], [-106.53, 29.53], [-106.0, 29.75], [-105.47, 29.53], [-105.32, 29.18], [-105.0, 29.04], [-104.5, 29.25], [-103.97, 29.03], [-103.82, 28.68], [-103.75, 28.65], [-103.68, 28.68], [-103.53, 29.03], [-103.0, 29.25], [-102.47, 29.03], [-102.25, 28.5], [-102.46, 28.0], [-102.25, 27.5], [-102.35, 27.25], [-102.25, 27.0], [-102.43, 26.57], [-102.0, 26.75], [-101.47, 26.53], [-101.32, 26.18], [-101.25, 26.15], [-101.0, 26.25], [-100.75, 26.15], [-100.5, 26.25], [-99.97, 26.03], [-99.75, 25.5], [-99.97, 24.97], [-100.5, 24.75], [-100.75, 24.85], [-100.82, 24.82], [-100.97, 24.47], [-101.32, 24.32], [-101.47, 23.97], [-101.82, 23.82], [-101.97, 23.47], [-102.5, 23.25], [-102.75, 23.35], [-103.0, 23.25], [-103.25, 23.35], [-103.5, 23.25], [-104.03, 23.47], [-104.18, 23.82], [-104.25, 23.85], [-104.5, 23.75], [-105.03, 23.97], [-105.18, 24.32], [-105.25, 24.35], [-105.5, 24.25], [-106.03, 24.47], [-106.18, 24.82], [-106.53, 24.97], [-106.75, 25.5], [-106.65, 25.75], [-106.68, 25.82], [-106.75, 25.85], [-107.0, 25.75], [-107.53, 25.97], [-107.75, 26.5], [-107.65, 26.75], [-107.75, 27.0], [-107.65, 27.25]]]]}, "2021-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.65, 27.25], [-107.75, 27.5], [-107.53, 28.03], [-107.18, 28.18], [-107.03, 28.53], [-106.62, 28.7], [-106.75, 29.0], [-106.53, 29.53], [-106.0, 29.75], [-105.47, 29.53], [-105.32, 29.18], [-105.0, 29.04], [-104.5, 29.25], [-103.97, 29.03], [-103.82, 28.68], [-103.75, 28.65], [-103.68, 28.68], [-103.53, 29.03], [-103.0, 29.25], [-102.47, 29.03], [-102.25, 28.5], [-102.46, 28.0], [-102.25, 27.5], [-102.35, 27.25], [-102.25, 27.0], [-102.43, 26.57], [-102.0, 26.75], [-101.47, 26.53], [-101.32, 26.18], [-101.25, 26.15], [-101.0, 26.25], [-100.75, 26.15], [-100.5, 26.25], [-99.97, 26.03], [-99.75, 25.5], [-99.97, 24.97], [-100.5, 24.75], [-100.75, 24.85], [-100.82, 24.82], [-100.97, 24.47], [-101.32, 24.32], [-101.47, 23.97], [-101.82, 23.82], [-101.97, 23.47], [-102.5, 23.25], [-102.75, 23.35], [-103.0, 23.25], [-103.25, 23.35], [-103.5, 23.25], [-104.03, 23.47], [-104.18, 23.82], [-104.25, 23.85], [-104.5, 23.75], [-105.03, 23.97], [-105.18, 24.32], [-105.25, 24.35], [-105.5, 24.25], [-106.03, 24.47], [-106.18, 24.82], [-106.53, 24.97], [-106.75, 25.5], [-106.65, 25.75], [-106.68, 25.82], [-106.75, 25.85], [-107.0, 25.75], [-107.53, 25.97], [-107.75, 26.5], [-107.65, 26.75], [-107.75, 27.0], [-107.65, 27.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.462237812879437}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.207043630115643}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.849048168948002, 4.241775718332519, 5.67204663971512]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [0.8762943049126193, 0.8514410767845675, 1.999371065171374]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.267860085608595, -6.878410990225687, -5.474859814512648]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.99570574153779, -9.462237812879437, -7.751616778806351]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0717065776026735, -2.274558947613073, -1.8282923463332619]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.718954343854936, -2.7510057973718145, -2.826685572259917]}}