{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:59.327231", "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": "2013-Apr-03_to_2013-Apr-05_261.5_33.5"}, "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": 2013040000196}, "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": "April 03 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 05 2013"}, "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": 68113.57022019554}, "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": 33.5}, "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": 261.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "261.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 259.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 263.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 29.75}, "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": {"2013-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.53, 29.47], [-100.75, 30.0], [-100.53, 30.53], [-100.0, 30.75], [-99.75, 30.65], [-99.68, 30.68], [-99.65, 30.75], [-99.75, 31.0], [-99.54, 31.5], [-99.75, 32.0], [-99.54, 32.5], [-99.75, 33.0], [-99.65, 33.25], [-99.75, 33.5], [-99.53, 34.03], [-99.18, 34.18], [-99.03, 34.53], [-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], [-97.25, 33.65], [-97.0, 33.75], [-96.75, 33.65], [-96.5, 33.75], [-95.97, 33.53], [-95.75, 33.0], [-95.97, 32.47], [-96.32, 32.32], [-96.47, 31.97], [-96.82, 31.82], [-96.97, 31.47], [-97.32, 31.32], [-97.47, 30.97], [-97.82, 30.82], [-97.85, 30.75], [-97.75, 30.5], [-97.97, 29.97], [-98.32, 29.82], [-98.47, 29.47], [-99.0, 29.25], [-99.25, 29.35], [-99.5, 29.25], [-99.75, 29.35], [-100.0, 29.25], [-100.53, 29.47]]]]}, "2013-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.53, 29.47], [-100.75, 30.0], [-100.53, 30.53], [-100.0, 30.75], [-99.75, 30.65], [-99.68, 30.68], [-99.65, 30.75], [-99.75, 31.0], [-99.54, 31.5], [-99.75, 32.0], [-99.54, 32.5], [-99.75, 33.0], [-99.65, 33.25], [-99.75, 33.5], [-99.53, 34.03], [-99.18, 34.18], [-99.03, 34.53], [-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], [-97.25, 33.65], [-97.0, 33.75], [-96.75, 33.65], [-96.5, 33.75], [-95.97, 33.53], [-95.75, 33.0], [-95.97, 32.47], [-96.32, 32.32], [-96.47, 31.97], [-96.82, 31.82], [-96.97, 31.47], [-97.32, 31.32], [-97.47, 30.97], [-97.82, 30.82], [-97.85, 30.75], [-97.75, 30.5], [-97.97, 29.97], [-98.32, 29.82], [-98.47, 29.47], [-99.0, 29.25], [-99.25, 29.35], [-99.5, 29.25], [-99.75, 29.35], [-100.0, 29.25], [-100.53, 29.47]]]]}, "2013-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-100.53, 29.47], [-100.75, 30.0], [-100.53, 30.53], [-100.0, 30.75], [-99.75, 30.65], [-99.68, 30.68], [-99.65, 30.75], [-99.75, 31.0], [-99.54, 31.5], [-99.75, 32.0], [-99.54, 32.5], [-99.75, 33.0], [-99.65, 33.25], [-99.75, 33.5], [-99.53, 34.03], [-99.18, 34.18], [-99.03, 34.53], [-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], [-97.25, 33.65], [-97.0, 33.75], [-96.75, 33.65], [-96.5, 33.75], [-95.97, 33.53], [-95.75, 33.0], [-95.97, 32.47], [-96.32, 32.32], [-96.47, 31.97], [-96.82, 31.82], [-96.97, 31.47], [-97.32, 31.32], [-97.47, 30.97], [-97.82, 30.82], [-97.85, 30.75], [-97.75, 30.5], [-97.97, 29.97], [-98.32, 29.82], [-98.47, 29.47], [-99.0, 29.25], [-99.25, 29.35], [-99.5, 29.25], [-99.75, 29.35], [-100.0, 29.25], [-100.53, 29.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.57466942315881}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.634222641819392}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.641374154117898, 8.006561001040836, 10.807462861731665]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.025874603296245, 6.139750925695978, 9.624856840971347]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.405831060589179, -9.089729308675903, -6.407107556193095]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.57466942315881, -10.091667226006223, -7.284501152393261]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7677003362421853, -2.1275104742318995, -1.4408975167201676]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.247481103046009, -2.2864678811301773, -1.7037920200320882]}}