{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:18.207283", "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": "2022-Mar-22_to_2022-Mar-24_255.0_28.5"}, "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": 2022030000740}, "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": "March 22 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 24 2022"}, "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": 75757.17678220762}, "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": 28.5}, "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": 255.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "255.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 252.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 255.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.04, 29.5], [-108.25, 30.0], [-108.03, 30.53], [-107.5, 30.75], [-107.25, 30.65], [-107.0, 30.75], [-106.75, 30.65], [-106.5, 30.75], [-106.25, 30.65], [-106.0, 30.75], [-105.47, 30.53], [-105.32, 30.18], [-105.25, 30.15], [-105.0, 30.25], [-104.75, 30.15], [-104.5, 30.25], [-103.97, 30.03], [-103.75, 29.5], [-103.85, 29.25], [-103.75, 29.0], [-103.85, 28.75], [-103.75, 28.5], [-103.97, 27.97], [-104.32, 27.82], [-104.47, 27.47], [-105.0, 27.25], [-105.5, 27.46], [-105.82, 27.32], [-105.85, 27.25], [-105.75, 27.0], [-105.97, 26.47], [-106.5, 26.25], [-107.03, 26.47], [-107.25, 27.0], [-107.15, 27.25], [-107.25, 27.5], [-107.15, 27.75], [-107.2, 27.88], [-107.5, 27.75], [-108.03, 27.97], [-108.25, 28.5], [-108.15, 28.75], [-108.25, 29.0], [-108.04, 29.5]]]]}, "2022-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.04, 29.5], [-108.25, 30.0], [-108.03, 30.53], [-107.5, 30.75], [-107.25, 30.65], [-107.0, 30.75], [-106.75, 30.65], [-106.5, 30.75], [-106.25, 30.65], [-106.0, 30.75], [-105.47, 30.53], [-105.32, 30.18], [-105.25, 30.15], [-105.0, 30.25], [-104.75, 30.15], [-104.5, 30.25], [-103.97, 30.03], [-103.75, 29.5], [-103.85, 29.25], [-103.75, 29.0], [-103.85, 28.75], [-103.75, 28.5], [-103.97, 27.97], [-104.32, 27.82], [-104.47, 27.47], [-105.0, 27.25], [-105.5, 27.46], [-105.82, 27.32], [-105.85, 27.25], [-105.75, 27.0], [-105.97, 26.47], [-106.5, 26.25], [-107.03, 26.47], [-107.25, 27.0], [-107.15, 27.25], [-107.25, 27.5], [-107.15, 27.75], [-107.2, 27.88], [-107.5, 27.75], [-108.03, 27.97], [-108.25, 28.5], [-108.15, 28.75], [-108.25, 29.0], [-108.04, 29.5]]]]}, "2022-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.04, 29.5], [-108.25, 30.0], [-108.03, 30.53], [-107.5, 30.75], [-107.25, 30.65], [-107.0, 30.75], [-106.75, 30.65], [-106.5, 30.75], [-106.25, 30.65], [-106.0, 30.75], [-105.47, 30.53], [-105.32, 30.18], [-105.25, 30.15], [-105.0, 30.25], [-104.75, 30.15], [-104.5, 30.25], [-103.97, 30.03], [-103.75, 29.5], [-103.85, 29.25], [-103.75, 29.0], [-103.85, 28.75], [-103.75, 28.5], [-103.97, 27.97], [-104.32, 27.82], [-104.47, 27.47], [-105.0, 27.25], [-105.5, 27.46], [-105.82, 27.32], [-105.85, 27.25], [-105.75, 27.0], [-105.97, 26.47], [-106.5, 26.25], [-107.03, 26.47], [-107.25, 27.0], [-107.15, 27.25], [-107.25, 27.5], [-107.15, 27.75], [-107.2, 27.88], [-107.5, 27.75], [-108.03, 27.97], [-108.25, 28.5], [-108.15, 28.75], [-108.25, 29.0], [-108.04, 29.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.58750416442291}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.05191846533874}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.014546041527637, 8.958447324816234, 10.970682353666007]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.383217917039303, 5.599072306562505, 7.303546036643127]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.246848059936228, -7.3991453772684315, -5.509761958811558]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.3905847128554, -9.58750416442291, -7.311974420241825]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6643476469718306, -2.2951652523671453, -1.7570919090570511]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1997740442361544, -2.7017861792895044, -2.271377090532732]}}