{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:29.114000", "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": "2024-Feb-16_to_2024-Feb-19_257.0_26.0"}, "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": 2024020000398}, "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 16 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 19 2024"}, "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": 55946.04287723036}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 26.0}, "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": 257.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "257.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 255.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 257.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-105.03, 26.53], [-104.5, 26.75], [-104.25, 26.65], [-104.0, 26.75], [-103.75, 26.65], [-103.5, 26.75], [-103.25, 26.65], [-103.0, 26.75], [-102.75, 26.65], [-102.5, 26.75], [-101.97, 26.53], [-101.75, 26.0], [-101.85, 25.75], [-101.75, 25.5], [-101.85, 25.25], [-101.75, 25.0], [-101.85, 24.75], [-101.75, 24.5], [-101.85, 24.25], [-101.75, 24.0], [-101.97, 23.47], [-102.5, 23.25], [-103.03, 23.47], [-103.18, 23.82], [-103.25, 23.85], [-103.5, 23.75], [-103.75, 23.85], [-104.0, 23.75], [-104.25, 23.85], [-104.5, 23.75], [-105.03, 23.97], [-105.25, 24.5], [-105.15, 24.75], [-105.25, 25.0], [-105.04, 25.5], [-105.25, 26.0], [-105.03, 26.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.25, 25.0], [-105.03999999999999, 25.5], [-105.25, 26.0], [-105.03, 26.53], [-104.5, 26.75], [-104.25, 26.65], [-104.0, 26.75], [-103.75, 26.65], [-103.5, 26.75], [-103.25, 26.65], [-103.0, 26.75], [-102.47000000000003, 26.53], [-102.32, 26.18], [-101.97000000000003, 26.03], [-101.75, 25.5], [-101.85000000000002, 25.25], [-101.75, 25.0], [-101.85000000000002, 24.75], [-101.75, 24.5], [-101.85000000000002, 24.25], [-101.75, 24.0], [-101.97000000000003, 23.47], [-102.5, 23.25], [-103.02999999999997, 23.47], [-103.18, 23.82], [-103.25, 23.85], [-103.5, 23.75], [-103.75, 23.85], [-104.0, 23.75], [-104.25, 23.85], [-104.5, 23.75], [-105.03, 23.97], [-105.25, 24.5], [-105.15, 24.75], [-105.25, 25.0]]]]}, "2024-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.25, 25.0], [-105.03999999999999, 25.5], [-105.25, 26.0], [-105.03, 26.53], [-104.5, 26.75], [-104.25, 26.65], [-104.0, 26.75], [-103.75, 26.65], [-103.5, 26.75], [-103.25, 26.65], [-103.0, 26.75], [-102.75, 26.65], [-102.5, 26.75], [-101.97000000000003, 26.53], [-101.75, 26.0], [-101.85000000000002, 25.75], [-101.75, 25.5], [-101.85000000000002, 25.25], [-101.75, 25.0], [-101.85000000000002, 24.75], [-101.75, 24.5], [-101.85000000000002, 24.25], [-101.75, 24.0], [-101.97000000000003, 23.47], [-102.5, 23.25], [-103.02999999999997, 23.47], [-103.18, 23.82], [-103.25, 23.85], [-103.5, 23.75], [-103.75, 23.85], [-104.0, 23.75], [-104.25, 23.85], [-104.5, 23.75], [-105.03, 23.97], [-105.25, 24.5], [-105.15, 24.75], [-105.25, 25.0]]]]}, "2024-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.25, 25.0], [-105.03999999999999, 25.5], [-105.25, 26.0], [-105.03, 26.53], [-104.5, 26.75], [-104.25, 26.65], [-104.0, 26.75], [-103.75, 26.65], [-103.5, 26.75], [-103.25, 26.65], [-103.0, 26.75], [-102.75, 26.65], [-102.5, 26.75], [-101.97000000000003, 26.53], [-101.75, 26.0], [-101.85000000000002, 25.75], [-101.75, 25.5], [-101.85000000000002, 25.25], [-101.75, 25.0], [-101.85000000000002, 24.75], [-101.75, 24.5], [-101.85000000000002, 24.25], [-101.75, 24.0], [-101.97000000000003, 23.47], [-102.5, 23.25], [-103.02999999999997, 23.47], [-103.18, 23.82], [-103.25, 23.85], [-103.5, 23.75], [-103.75, 23.85], [-104.0, 23.75], [-104.25, 23.85], [-104.5, 23.75], [-105.03, 23.97], [-105.25, 24.5], [-105.15, 24.75], [-105.25, 25.0]]]]}, "2024-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.0, 25.25], [-103.52999999999997, 25.47], [-103.75, 26.0], [-103.52999999999997, 26.53], [-103.0, 26.75], [-102.75, 26.65], [-102.5, 26.75], [-101.97000000000003, 26.53], [-101.75, 26.0], [-101.97000000000003, 25.47], [-102.5, 25.25], [-102.75, 25.35], [-103.0, 25.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.244267450678706}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.233778890380143}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.12790960367795, 10.943577970496108, 10.330763913357941, 13.671880968025334]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.964720969979453, 7.94281596326681, 8.380315326115976, 13.606581511052298]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.586867225095557, -6.19030605538895, -7.002644330961056, -5.1255136546865]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.645554195783802, -7.5048184922052315, -8.244267450678706, -5.212162550602557]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8264431181219452, -2.024995449857174, -2.2535762410056455, -1.54489414604637]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.241862390467257, -2.5148822845417227, -2.767234383630791, -1.5683006921120004]}}