{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:41.607099", "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": "2014-Feb-10_to_2014-Feb-12_259.0_32.5"}, "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": 2014020000437}, "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 10 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 12 2014"}, "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": 93540.00749774248}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "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": 32.5}, "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": 259.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "259.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 257.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 262.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.03, 33.03], [-102.5, 33.25], [-102.25, 33.15], [-102.0, 33.25], [-101.75, 33.15], [-101.68, 33.18], [-101.53, 33.53], [-101.18, 33.68], [-101.03, 34.03], [-100.68, 34.18], [-100.53, 34.53], [-100.0, 34.75], [-99.75, 34.65], [-99.5, 34.75], [-99.25, 34.65], [-99.0, 34.75], [-98.75, 34.65], [-98.5, 34.75], [-97.97, 34.53], [-97.75, 34.0], [-97.85, 33.75], [-97.82, 33.68], [-97.75, 33.65], [-97.5, 33.75], [-96.97, 33.53], [-96.75, 33.0], [-96.97, 32.47], [-97.32, 32.32], [-97.47, 31.97], [-97.82, 31.82], [-97.97, 31.47], [-98.5, 31.25], [-98.75, 31.35], [-99.0, 31.25], [-99.25, 31.35], [-99.5, 31.25], [-99.75, 31.35], [-100.0, 31.25], [-100.25, 31.35], [-100.5, 31.25], [-100.75, 31.35], [-101.0, 31.25], [-101.25, 31.35], [-101.5, 31.25], [-101.75, 31.35], [-102.0, 31.25], [-102.25, 31.35], [-102.5, 31.25], [-103.03, 31.47], [-103.25, 32.0], [-103.15, 32.25], [-103.25, 32.5], [-103.03, 33.03]]]]}, "2014-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.03, 33.03], [-102.5, 33.25], [-102.25, 33.15], [-102.0, 33.25], [-101.75, 33.15], [-101.68, 33.18], [-101.53, 33.53], [-101.18, 33.68], [-101.03, 34.03], [-100.68, 34.18], [-100.53, 34.53], [-100.0, 34.75], [-99.75, 34.65], [-99.5, 34.75], [-99.25, 34.65], [-99.0, 34.75], [-98.75, 34.65], [-98.5, 34.75], [-97.97, 34.53], [-97.75, 34.0], [-97.85, 33.75], [-97.82, 33.68], [-97.75, 33.65], [-97.5, 33.75], [-96.97, 33.53], [-96.75, 33.0], [-96.97, 32.47], [-97.32, 32.32], [-97.47, 31.97], [-97.82, 31.82], [-97.97, 31.47], [-98.5, 31.25], [-98.75, 31.35], [-99.0, 31.25], [-99.25, 31.35], [-99.5, 31.25], [-99.75, 31.35], [-100.0, 31.25], [-100.25, 31.35], [-100.5, 31.25], [-100.75, 31.35], [-101.0, 31.25], [-101.25, 31.35], [-101.5, 31.25], [-101.75, 31.35], [-102.0, 31.25], [-102.25, 31.35], [-102.5, 31.25], [-103.03, 31.47], [-103.25, 32.0], [-103.15, 32.25], [-103.25, 32.5], [-103.03, 33.03]]]]}, "2014-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-103.03, 33.03], [-102.5, 33.25], [-102.25, 33.15], [-102.0, 33.25], [-101.75, 33.15], [-101.68, 33.18], [-101.53, 33.53], [-101.18, 33.68], [-101.03, 34.03], [-100.68, 34.18], [-100.53, 34.53], [-100.0, 34.75], [-99.75, 34.65], [-99.5, 34.75], [-99.25, 34.65], [-99.0, 34.75], [-98.75, 34.65], [-98.5, 34.75], [-97.97, 34.53], [-97.75, 34.0], [-97.85, 33.75], [-97.82, 33.68], [-97.75, 33.65], [-97.5, 33.75], [-96.97, 33.53], [-96.75, 33.0], [-96.97, 32.47], [-97.32, 32.32], [-97.47, 31.97], [-97.82, 31.82], [-97.97, 31.47], [-98.5, 31.25], [-98.75, 31.35], [-99.0, 31.25], [-99.25, 31.35], [-99.5, 31.25], [-99.75, 31.35], [-100.0, 31.25], [-100.25, 31.35], [-100.5, 31.25], [-100.75, 31.35], [-101.0, 31.25], [-101.25, 31.35], [-101.5, 31.25], [-101.75, 31.35], [-102.0, 31.25], [-102.25, 31.35], [-102.5, 31.25], [-103.03, 31.47], [-103.25, 32.0], [-103.15, 32.25], [-103.25, 32.5], [-103.03, 33.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -13.66953289473247}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -10.126935413914739}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-1.0784660104664567, -3.8439657499370696, 0.4361312324487585]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-4.10512347932297, -5.1679710105475465, -0.4379353911813837]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-9.449860131638875, -12.482347793018299, -8.448598317087045]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-11.223609732076511, -13.66953289473247, -9.119243113767652]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.719844771727286, -2.292423742092932, -1.5507013992820733]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0317270388805686, -2.561376627112731, -1.7227962240038088]}}