{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:26.950167", "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": "2012-Sep-27_to_2012-Oct-03_82.5_-76.5"}, "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": 2012090000981}, "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": "September 27 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 03 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 91294.29504752671}, "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": ["Antarctica"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": -76.5}, "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": 82.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "82.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 78.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 90.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -77.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -73.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-09-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.47, -77.53], [83.25, -77.0], [83.47, -76.47], [84.0, -76.25], [84.25, -76.35], [84.5, -76.25], [84.75, -76.35], [85.0, -76.25], [85.25, -76.35], [85.32, -76.32], [85.47, -75.97], [86.0, -75.75], [86.25, -75.85], [86.5, -75.75], [86.75, -75.85], [87.0, -75.75], [87.25, -75.85], [87.5, -75.75], [87.75, -75.85], [88.0, -75.75], [88.25, -75.85], [88.5, -75.75], [88.75, -75.85], [89.0, -75.75], [89.25, -75.85], [89.5, -75.75], [89.75, -75.85], [90.0, -75.75], [90.53, -75.97], [90.75, -76.5], [90.53, -77.03], [90.0, -77.25], [89.75, -77.15], [89.5, -77.25], [89.25, -77.15], [89.18, -77.18], [89.03, -77.53], [88.5, -77.75], [88.25, -77.65], [88.0, -77.75], [87.75, -77.65], [87.5, -77.75], [87.25, -77.65], [87.0, -77.75], [86.75, -77.65], [86.5, -77.75], [86.25, -77.65], [86.0, -77.75], [85.75, -77.65], [85.5, -77.75], [85.25, -77.65], [85.0, -77.75], [84.75, -77.65], [84.5, -77.75], [84.25, -77.65], [84.0, -77.75], [83.47, -77.53]]]]}, "2012-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.97, -77.53], [78.75, -77.0], [78.97, -76.47], [79.5, -76.25], [79.75, -76.35], [79.82, -76.32], [79.97, -75.97], [80.5, -75.75], [80.75, -75.85], [81.0, -75.75], [81.25, -75.85], [81.5, -75.75], [81.75, -75.85], [82.0, -75.75], [82.25, -75.85], [82.32, -75.82], [82.47, -75.47], [83.0, -75.25], [83.25, -75.35], [83.5, -75.25], [83.75, -75.35], [84.0, -75.25], [84.25, -75.35], [84.5, -75.25], [84.75, -75.35], [84.82, -75.32], [84.97, -74.97], [85.5, -74.75], [85.75, -74.85], [86.0, -74.75], [86.25, -74.85], [86.5, -74.75], [86.75, -74.85], [87.0, -74.75], [87.25, -74.85], [87.5, -74.75], [87.75, -74.85], [88.0, -74.75], [88.25, -74.85], [88.5, -74.75], [88.75, -74.85], [89.0, -74.75], [89.25, -74.85], [89.5, -74.75], [90.03, -74.97], [90.25, -75.5], [90.15, -75.75], [90.18, -75.82], [90.53, -75.97], [90.75, -76.5], [90.53, -77.03], [90.0, -77.25], [89.75, -77.15], [89.5, -77.25], [89.25, -77.15], [89.18, -77.18], [89.03, -77.53], [88.5, -77.75], [88.25, -77.65], [88.0, -77.75], [87.75, -77.65], [87.5, -77.75], [87.25, -77.65], [87.0, -77.75], [86.75, -77.65], [86.5, -77.75], [86.25, -77.65], [86.0, -77.75], [85.75, -77.65], [85.5, -77.75], [85.25, -77.65], [85.0, -77.75], [84.75, -77.65], [84.5, -77.75], [84.25, -77.65], [84.0, -77.75], [83.75, -77.65], [83.5, -77.75], [83.25, -77.65], [83.0, -77.75], [82.75, -77.65], [82.5, -77.75], [82.25, -77.65], [82.0, -77.75], [81.75, -77.65], [81.5, -77.75], [81.25, -77.65], [81.0, -77.75], [80.75, -77.65], [80.5, -77.75], [80.25, -77.65], [80.0, -77.75], [79.75, -77.65], [79.5, -77.75], [78.97, -77.53]]]]}, "2012-09-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.47, -74.97], [78.82, -74.82], [78.97, -74.47], [79.32, -74.32], [79.47, -73.97], [80.0, -73.75], [80.25, -73.85], [80.5, -73.75], [80.75, -73.85], [80.82, -73.82], [80.97, -73.47], [81.5, -73.25], [81.75, -73.35], [82.0, -73.25], [82.25, -73.35], [82.5, -73.25], [82.75, -73.35], [83.0, -73.25], [83.25, -73.35], [83.5, -73.25], [83.75, -73.35], [84.0, -73.25], [84.53, -73.47], [84.68, -73.82], [84.75, -73.85], [84.82, -73.82], [84.97, -73.47], [85.5, -73.25], [86.03, -73.47], [86.18, -73.82], [86.25, -73.85], [86.5, -73.75], [87.03, -73.97], [87.25, -74.5], [87.13, -74.8], [87.25, -74.85], [87.5, -74.75], [87.75, -74.85], [88.0, -74.75], [88.25, -74.85], [88.5, -74.75], [88.75, -74.85], [89.0, -74.75], [89.25, -74.85], [89.5, -74.75], [90.03, -74.97], [90.25, -75.5], [90.15, -75.75], [90.18, -75.82], [90.53, -75.97], [90.75, -76.5], [90.53, -77.03], [90.0, -77.25], [89.75, -77.15], [89.5, -77.25], [89.25, -77.15], [89.18, -77.18], [89.03, -77.53], [88.5, -77.75], [88.25, -77.65], [88.0, -77.75], [87.75, -77.65], [87.5, -77.75], [87.25, -77.65], [87.0, -77.75], [86.75, -77.65], [86.5, -77.75], [86.25, -77.65], [86.0, -77.75], [85.75, -77.65], [85.5, -77.75], [85.25, -77.65], [85.0, -77.75], [84.75, -77.65], [84.5, -77.75], [84.25, -77.65], [84.0, -77.75], [83.75, -77.65], [83.5, -77.75], [83.25, -77.65], [83.0, -77.75], [82.75, -77.65], [82.5, -77.75], [82.25, -77.65], [82.0, -77.75], [81.75, -77.65], [81.5, -77.75], [81.25, -77.65], [81.0, -77.75], [80.75, -77.65], [80.5, -77.75], [80.25, -77.65], [80.0, -77.75], [79.75, -77.65], [79.5, -77.75], [78.97, -77.53], [78.75, -77.0], [78.85, -76.75], [78.82, -76.68], [78.47, -76.53], [78.25, -76.0], [78.35, -75.75], [78.25, -75.5], [78.47, -74.97]]]]}, "2012-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.47, -74.97], [78.82, -74.82], [78.97, -74.47], [79.32, -74.32], [79.47, -73.97], [80.0, -73.75], [80.25, -73.85], [80.5, -73.75], [80.75, -73.85], [80.82, -73.82], [80.97, -73.47], [81.5, -73.25], [81.75, -73.35], [82.0, -73.25], [82.25, -73.35], [82.5, -73.25], [82.75, -73.35], [83.0, -73.25], [83.25, -73.35], [83.5, -73.25], [83.75, -73.35], [84.0, -73.25], [84.53, -73.47], [84.68, -73.82], [84.75, -73.85], [84.82, -73.82], [84.97, -73.47], [85.5, -73.25], [86.03, -73.47], [86.18, -73.82], [86.25, -73.85], [86.5, -73.75], [87.03, -73.97], [87.25, -74.5], [87.13, -74.8], [87.25, -74.85], [87.5, -74.75], [87.75, -74.85], [88.0, -74.75], [88.25, -74.85], [88.5, -74.75], [88.75, -74.85], [89.0, -74.75], [89.25, -74.85], [89.5, -74.75], [90.03, -74.97], [90.25, -75.5], [90.15, -75.75], [90.25, -76.0], [90.03, -76.53], [89.5, -76.75], [89.25, -76.65], [89.0, -76.75], [88.75, -76.65], [88.68, -76.68], [88.53, -77.03], [88.0, -77.25], [87.75, -77.15], [87.5, -77.25], [87.25, -77.15], [87.0, -77.25], [86.75, -77.15], [86.5, -77.25], [86.25, -77.15], [86.0, -77.25], [85.75, -77.15], [85.68, -77.18], [85.53, -77.53], [85.0, -77.75], [84.75, -77.65], [84.5, -77.75], [84.25, -77.65], [84.0, -77.75], [83.75, -77.65], [83.5, -77.75], [83.25, -77.65], [83.0, -77.75], [82.75, -77.65], [82.5, -77.75], [82.25, -77.65], [82.0, -77.75], [81.75, -77.65], [81.5, -77.75], [81.25, -77.65], [81.0, -77.75], [80.75, -77.65], [80.5, -77.75], [80.25, -77.65], [80.0, -77.75], [79.75, -77.65], [79.5, -77.75], [78.97, -77.53], [78.75, -77.0], [78.85, -76.75], [78.82, -76.68], [78.47, -76.53], [78.25, -76.0], [78.35, -75.75], [78.25, -75.5], [78.47, -74.97]]]]}, "2012-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.47, -74.97], [78.82, -74.82], [78.97, -74.47], [79.32, -74.32], [79.47, -73.97], [80.0, -73.75], [80.25, -73.85], [80.5, -73.75], [80.75, -73.85], [80.82, -73.82], [80.97, -73.47], [81.5, -73.25], [81.75, -73.35], [82.0, -73.25], [82.25, -73.35], [82.5, -73.25], [82.75, -73.35], [83.0, -73.25], [83.25, -73.35], [83.5, -73.25], [83.75, -73.35], [84.0, -73.25], [84.53, -73.47], [84.68, -73.82], [84.75, -73.85], [84.82, -73.82], [84.97, -73.47], [85.5, -73.25], [86.03, -73.47], [86.18, -73.82], [86.25, -73.85], [86.5, -73.75], [87.03, -73.97], [87.25, -74.5], [87.03, -75.03], [86.68, -75.18], [86.65, -75.25], [86.75, -75.5], [86.53, -76.03], [86.0, -76.25], [85.75, -76.15], [85.5, -76.25], [85.25, -76.15], [85.18, -76.18], [85.03, -76.53], [84.5, -76.75], [84.25, -76.65], [84.0, -76.75], [83.75, -76.65], [83.5, -76.75], [83.25, -76.65], [83.18, -76.68], [83.03, -77.03], [82.5, -77.25], [82.25, -77.15], [82.0, -77.25], [81.75, -77.15], [81.5, -77.25], [81.25, -77.15], [81.0, -77.25], [80.75, -77.15], [80.5, -77.25], [80.25, -77.15], [80.0, -77.25], [79.75, -77.15], [79.5, -77.25], [78.97, -77.03], [78.82, -76.68], [78.47, -76.53], [78.25, -76.0], [78.35, -75.75], [78.25, -75.5], [78.47, -74.97]]]]}, "2012-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.47, -74.97], [79.0, -74.75], [79.25, -74.85], [79.32, -74.82], [79.47, -74.47], [80.0, -74.25], [80.25, -74.35], [80.5, -74.25], [80.75, -74.35], [81.0, -74.25], [81.25, -74.35], [81.5, -74.25], [81.75, -74.35], [81.82, -74.32], [81.97, -73.97], [82.5, -73.75], [82.75, -73.85], [83.0, -73.75], [83.53, -73.97], [83.68, -74.32], [83.75, -74.35], [84.0, -74.25], [84.25, -74.35], [84.5, -74.25], [84.75, -74.35], [85.0, -74.25], [85.25, -74.35], [85.5, -74.25], [85.75, -74.35], [86.0, -74.25], [86.53, -74.47], [86.75, -75.0], [86.65, -75.25], [86.75, -75.5], [86.53, -76.03], [86.0, -76.25], [85.75, -76.15], [85.5, -76.25], [85.25, -76.15], [85.18, -76.18], [85.03, -76.53], [84.5, -76.75], [84.25, -76.65], [84.0, -76.75], [83.75, -76.65], [83.5, -76.75], [83.25, -76.65], [83.18, -76.68], [83.03, -77.03], [82.5, -77.25], [82.25, -77.15], [82.0, -77.25], [81.75, -77.15], [81.5, -77.25], [81.25, -77.15], [81.0, -77.25], [80.75, -77.15], [80.5, -77.25], [80.25, -77.15], [80.0, -77.25], [79.75, -77.15], [79.5, -77.25], [78.97, -77.03], [78.82, -76.68], [78.47, -76.53], [78.25, -76.0], [78.35, -75.75], [78.25, -75.5], [78.47, -74.97]]]]}, "2012-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.47, -77.03], [79.25, -76.5], [79.47, -75.97], [80.0, -75.75], [80.25, -75.85], [80.5, -75.75], [80.75, -75.85], [81.0, -75.75], [81.25, -75.85], [81.32, -75.82], [81.47, -75.47], [82.0, -75.25], [82.25, -75.35], [82.5, -75.25], [82.75, -75.35], [82.82, -75.32], [82.97, -74.97], [83.5, -74.75], [83.75, -74.85], [84.0, -74.75], [84.25, -74.85], [84.5, -74.75], [84.75, -74.85], [85.0, -74.75], [85.25, -74.85], [85.32, -74.82], [85.47, -74.47], [86.0, -74.25], [86.53, -74.47], [86.75, -75.0], [86.65, -75.25], [86.75, -75.5], [86.53, -76.03], [86.0, -76.25], [85.75, -76.15], [85.5, -76.25], [85.25, -76.15], [85.18, -76.18], [85.03, -76.53], [84.5, -76.75], [84.25, -76.65], [84.0, -76.75], [83.75, -76.65], [83.5, -76.75], [83.25, -76.65], [83.18, -76.68], [83.03, -77.03], [82.5, -77.25], [82.25, -77.15], [82.0, -77.25], [81.75, -77.15], [81.5, -77.25], [81.25, -77.15], [81.0, -77.25], [80.75, -77.15], [80.5, -77.25], [80.25, -77.15], [80.0, -77.25], [79.47, -77.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.874976949425758}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.256849925671139}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-59.516491944819705, -58.10045655252452, -55.72382894652807, -55.244220125155664, -52.924039041218805, -53.603506225289124, -54.46724952235763]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-61.41532421909827, -62.09440528055029, -59.973320923950524, -59.23610241520768, -55.831372188161254, -56.46258118819185, -56.711502512362586]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.402968739218603, -7.859351457149565, -7.542400125564265, -7.473084728968731, -6.479876148083703, -6.725656385481596, -6.292255408152405]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.992709710941341, -8.874976949425758, -8.440580983336872, -8.488721426625943, -6.929907484307847, -7.238672852385804, -7.12455830972911]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2585276032101638, -1.392891090168961, -1.385817389592531, -1.3961920200831774, -1.300160995471412, -1.4098491216142994, -1.3525294511285166]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3412674301956977, -1.5325301753652323, -1.556104541093133, -1.5769790467662166, -1.4017532735180513, -1.5001874042551804, -1.498855690488767]}}