{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:04.074697", "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": "2017-Jan-28_to_2017-Jan-30_254.0_26.5"}, "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": 2017010000967}, "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 28 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 30 2017"}, "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": 118337.82155596591}, "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": 26.5}, "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": 254.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "254.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 251.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 257.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.75}, "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": {"2017-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.75, 28.5], [-108.53, 29.03], [-108.18, 29.18], [-108.03, 29.53], [-107.5, 29.75], [-107.25, 29.65], [-107.0, 29.75], [-106.47, 29.53], [-106.25, 29.0], [-106.35, 28.75], [-106.32, 28.68], [-106.25, 28.65], [-106.0, 28.75], [-105.75, 28.65], [-105.5, 28.75], [-105.25, 28.65], [-105.0, 28.75], [-104.47, 28.53], [-104.32, 28.18], [-103.97, 28.03], [-103.82, 27.68], [-103.75, 27.65], [-103.68, 27.68], [-103.53, 28.03], [-103.0, 28.25], [-102.47, 28.03], [-102.25, 27.5], [-102.47, 26.97], [-102.82, 26.82], [-102.97, 26.47], [-103.32, 26.32], [-103.46, 26.0], [-103.32, 25.68], [-103.25, 25.65], [-103.0, 25.75], [-102.47, 25.53], [-102.25, 25.0], [-102.47, 24.47], [-103.0, 24.25], [-103.25, 24.35], [-103.5, 24.25], [-104.03, 24.47], [-104.18, 24.82], [-104.5, 24.96], [-105.0, 24.75], [-105.5, 24.96], [-106.0, 24.75], [-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], [-107.68, 26.32], [-108.03, 26.47], [-108.25, 27.0], [-108.15, 27.25], [-108.25, 27.5], [-108.15, 27.75], [-108.18, 27.82], [-108.53, 27.97], [-108.75, 28.5]]]]}, "2017-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.75, 28.5], [-108.53, 29.03], [-108.18, 29.18], [-108.03, 29.53], [-107.5, 29.75], [-107.25, 29.65], [-107.0, 29.75], [-106.47, 29.53], [-106.25, 29.0], [-106.35, 28.75], [-106.32, 28.68], [-106.25, 28.65], [-106.0, 28.75], [-105.75, 28.65], [-105.5, 28.75], [-105.25, 28.65], [-105.0, 28.75], [-104.47, 28.53], [-104.32, 28.18], [-103.97, 28.03], [-103.82, 27.68], [-103.75, 27.65], [-103.68, 27.68], [-103.53, 28.03], [-103.0, 28.25], [-102.47, 28.03], [-102.25, 27.5], [-102.47, 26.97], [-102.82, 26.82], [-102.97, 26.47], [-103.32, 26.32], [-103.46, 26.0], [-103.32, 25.68], [-103.25, 25.65], [-103.0, 25.75], [-102.47, 25.53], [-102.25, 25.0], [-102.47, 24.47], [-103.0, 24.25], [-103.25, 24.35], [-103.5, 24.25], [-104.03, 24.47], [-104.18, 24.82], [-104.5, 24.96], [-105.0, 24.75], [-105.5, 24.96], [-106.0, 24.75], [-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], [-107.68, 26.32], [-108.03, 26.47], [-108.25, 27.0], [-108.15, 27.25], [-108.25, 27.5], [-108.15, 27.75], [-108.18, 27.82], [-108.53, 27.97], [-108.75, 28.5]]]]}, "2017-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.75, 28.5], [-108.53, 29.03], [-108.18, 29.18], [-108.03, 29.53], [-107.5, 29.75], [-107.25, 29.65], [-107.0, 29.75], [-106.47, 29.53], [-106.25, 29.0], [-106.35, 28.75], [-106.32, 28.68], [-106.25, 28.65], [-106.0, 28.75], [-105.75, 28.65], [-105.5, 28.75], [-105.25, 28.65], [-105.0, 28.75], [-104.47, 28.53], [-104.32, 28.18], [-103.97, 28.03], [-103.82, 27.68], [-103.75, 27.65], [-103.68, 27.68], [-103.53, 28.03], [-103.0, 28.25], [-102.47, 28.03], [-102.25, 27.5], [-102.47, 26.97], [-102.82, 26.82], [-102.97, 26.47], [-103.32, 26.32], [-103.46, 26.0], [-103.32, 25.68], [-103.25, 25.65], [-103.0, 25.75], [-102.47, 25.53], [-102.25, 25.0], [-102.47, 24.47], [-103.0, 24.25], [-103.25, 24.35], [-103.5, 24.25], [-104.03, 24.47], [-104.18, 24.82], [-104.5, 24.96], [-105.0, 24.75], [-105.5, 24.96], [-106.0, 24.75], [-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], [-107.68, 26.32], [-108.03, 26.47], [-108.25, 27.0], [-108.15, 27.25], [-108.25, 27.5], [-108.15, 27.75], [-108.18, 27.82], [-108.53, 27.97], [-108.75, 28.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.162770201201909}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.079218232945738}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.988829794220749, 3.734128959804991, 5.800682517116854]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.1929518181588037, -0.03772485953737714, 1.614648662657487]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.909783236875663, -6.223901718221316, -4.103969743740236]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.480311399383538, -8.162770201201909, -5.3869337355108655]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8772515451447407, -2.4102452832240595, -1.5601735241824892]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.406406865151906, -3.1659509843695326, -1.9216026449286105]}}