{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:51.251690", "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": "2019-Jun-03_to_2019-Jun-06_255.0_29.0"}, "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": 2019060000185}, "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": "June 03 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 06 2019"}, "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": 51348.7130278557}, "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", "United States"]}, "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": 29.0}, "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": 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": 254.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 256.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.15, 28.75], [-106.25, 29.0], [-106.15, 29.25], [-106.25, 29.5], [-106.03, 30.03], [-105.68, 30.18], [-105.65, 30.25], [-105.75, 30.5], [-105.53, 31.03], [-105.0, 31.25], [-104.47, 31.03], [-104.32, 30.68], [-103.97, 30.53], [-103.82, 30.18], [-103.47, 30.03], [-103.25, 29.5], [-103.35, 29.25], [-103.25, 29.0], [-103.47, 28.47], [-103.82, 28.32], [-103.85, 28.25], [-103.75, 28.0], [-103.97, 27.47], [-104.32, 27.32], [-104.47, 26.97], [-105.0, 26.75], [-105.53, 26.97], [-105.68, 27.32], [-106.03, 27.47], [-106.25, 28.0], [-106.15, 28.25], [-106.25, 28.5], [-106.15, 28.75]]]]}, "2019-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.15, 28.75], [-106.25, 29.0], [-106.15, 29.25], [-106.25, 29.5], [-106.15, 29.75], [-106.25, 30.0], [-106.03, 30.53], [-105.68, 30.68], [-105.53, 31.03], [-105.0, 31.25], [-104.47, 31.03], [-104.32, 30.68], [-103.97, 30.53], [-103.82, 30.18], [-103.47, 30.03], [-103.25, 29.5], [-103.35, 29.25], [-103.25, 29.0], [-103.47, 28.47], [-103.82, 28.32], [-103.85, 28.25], [-103.75, 28.0], [-103.97, 27.47], [-104.32, 27.32], [-104.47, 26.97], [-105.0, 26.75], [-105.53, 26.97], [-105.68, 27.32], [-106.03, 27.47], [-106.25, 28.0], [-106.15, 28.25], [-106.25, 28.5], [-106.15, 28.75]]]]}, "2019-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.15, 28.75], [-106.25, 29.0], [-106.15, 29.25], [-106.25, 29.5], [-106.15, 29.75], [-106.25, 30.0], [-106.03, 30.53], [-105.68, 30.68], [-105.53, 31.03], [-105.0, 31.25], [-104.47, 31.03], [-104.32, 30.68], [-103.97, 30.53], [-103.82, 30.18], [-103.47, 30.03], [-103.25, 29.5], [-103.35, 29.25], [-103.25, 29.0], [-103.47, 28.47], [-103.82, 28.32], [-103.85, 28.25], [-103.75, 28.0], [-103.97, 27.47], [-104.32, 27.32], [-104.47, 26.97], [-105.0, 26.75], [-105.53, 26.97], [-105.68, 27.32], [-106.03, 27.47], [-106.25, 28.0], [-106.15, 28.25], [-106.25, 28.5], [-106.15, 28.75]]]]}, "2019-06-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.25, 30.0], [-106.03, 30.53], [-105.5, 30.75], [-104.97, 30.53], [-104.8, 30.13], [-104.5, 30.25], [-103.97, 30.03], [-103.75, 29.5], [-103.85, 29.25], [-103.75, 29.0], [-103.97, 28.47], [-104.5, 28.25], [-104.75, 28.35], [-105.0, 28.25], [-105.53, 28.47], [-105.75, 29.0], [-105.62, 29.3], [-106.03, 29.47], [-106.25, 30.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.115448338417821}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.851602187817743}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.747896652732095, 23.516181839782348, 23.723336375887982, 25.206825709366626]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.06349951001158, 21.68241226303752, 22.22825808442792, 24.230024937404835]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.788624961698777, -5.0473683961317635, -4.932720676798735, -3.8197973932017817]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.581555444085552, -6.115448338417821, -6.005599206086231, -3.9776462201079426]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7784284661809242, -1.9199475231518992, -1.9330157029775525, -1.524356401829377]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0617975377431956, -2.2624979019701725, -2.4260033619932466, -1.5712122764607355]}}