{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:20:16.264159", "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": "2020-Jun-07_to_2020-Jun-09_246.0_57.0"}, "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": 2020060000265}, "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 07 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 09 2020"}, "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": 97846.571388881}, "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": ["Canada"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-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": 57.0}, "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": 246.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "246.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 239.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 249.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 58.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-06-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.03, 57.97], [-121.25, 58.5], [-121.03, 59.03], [-120.5, 59.25], [-120.25, 59.15], [-120.0, 59.25], [-119.75, 59.15], [-119.5, 59.25], [-119.25, 59.15], [-119.0, 59.25], [-118.75, 59.15], [-118.5, 59.25], [-118.25, 59.15], [-118.0, 59.25], [-117.75, 59.15], [-117.5, 59.25], [-117.25, 59.15], [-117.0, 59.25], [-116.5, 59.04], [-116.0, 59.25], [-115.75, 59.15], [-115.5, 59.25], [-115.25, 59.15], [-115.0, 59.25], [-114.47, 59.03], [-114.32, 58.68], [-114.25, 58.65], [-114.0, 58.75], [-113.47, 58.53], [-113.32, 58.18], [-113.25, 58.15], [-113.0, 58.25], [-112.75, 58.15], [-112.5, 58.25], [-112.25, 58.15], [-112.0, 58.25], [-111.75, 58.15], [-111.5, 58.25], [-111.25, 58.15], [-111.0, 58.25], [-110.75, 58.15], [-110.5, 58.25], [-109.97, 58.03], [-109.75, 57.5], [-109.85, 57.25], [-109.75, 57.0], [-109.97, 56.47], [-110.5, 56.25], [-110.75, 56.35], [-111.0, 56.25], [-111.25, 56.35], [-111.32, 56.32], [-111.47, 55.97], [-112.0, 55.75], [-112.25, 55.85], [-112.5, 55.75], [-112.75, 55.85], [-113.0, 55.75], [-113.25, 55.85], [-113.5, 55.75], [-113.75, 55.85], [-114.0, 55.75], [-114.25, 55.85], [-114.5, 55.75], [-114.75, 55.85], [-115.0, 55.75], [-115.53, 55.97], [-115.68, 56.32], [-115.75, 56.35], [-116.0, 56.25], [-116.25, 56.35], [-116.5, 56.25], [-116.75, 56.35], [-117.0, 56.25], [-117.53, 56.47], [-117.68, 56.82], [-118.03, 56.97], [-118.18, 57.32], [-118.25, 57.35], [-118.5, 57.25], [-118.75, 57.35], [-119.0, 57.25], [-119.25, 57.35], [-119.5, 57.25], [-120.03, 57.47], [-120.18, 57.82], [-120.25, 57.85], [-120.5, 57.75], [-121.03, 57.97]]]]}, "2020-06-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.03, 57.97], [-121.25, 58.5], [-121.03, 59.03], [-120.5, 59.25], [-120.25, 59.15], [-120.0, 59.25], [-119.75, 59.15], [-119.5, 59.25], [-119.25, 59.15], [-119.0, 59.25], [-118.75, 59.15], [-118.5, 59.25], [-118.25, 59.15], [-118.0, 59.25], [-117.75, 59.15], [-117.5, 59.25], [-117.25, 59.15], [-117.0, 59.25], [-116.5, 59.04], [-116.0, 59.25], [-115.75, 59.15], [-115.5, 59.25], [-115.25, 59.15], [-115.0, 59.25], [-114.47, 59.03], [-114.32, 58.68], [-114.25, 58.65], [-114.0, 58.75], [-113.47, 58.53], [-113.32, 58.18], [-113.25, 58.15], [-113.0, 58.25], [-112.75, 58.15], [-112.5, 58.25], [-112.25, 58.15], [-112.0, 58.25], [-111.75, 58.15], [-111.5, 58.25], [-111.25, 58.15], [-111.0, 58.25], [-110.75, 58.15], [-110.5, 58.25], [-109.97, 58.03], [-109.75, 57.5], [-109.85, 57.25], [-109.75, 57.0], [-109.97, 56.47], [-110.5, 56.25], [-110.75, 56.35], [-111.0, 56.25], [-111.25, 56.35], [-111.32, 56.32], [-111.47, 55.97], [-112.0, 55.75], [-112.25, 55.85], [-112.5, 55.75], [-112.75, 55.85], [-113.0, 55.75], [-113.25, 55.85], [-113.5, 55.75], [-113.75, 55.85], [-114.0, 55.75], [-114.25, 55.85], [-114.5, 55.75], [-114.75, 55.85], [-115.0, 55.75], [-115.53, 55.97], [-115.68, 56.32], [-115.75, 56.35], [-116.0, 56.25], [-116.25, 56.35], [-116.5, 56.25], [-116.75, 56.35], [-117.0, 56.25], [-117.53, 56.47], [-117.68, 56.82], [-118.03, 56.97], [-118.18, 57.32], [-118.25, 57.35], [-118.5, 57.25], [-118.75, 57.35], [-119.0, 57.25], [-119.25, 57.35], [-119.5, 57.25], [-120.03, 57.47], [-120.18, 57.82], [-120.25, 57.85], [-120.5, 57.75], [-121.03, 57.97]]]]}, "2020-06-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-121.03, 57.97], [-121.25, 58.5], [-121.03, 59.03], [-120.5, 59.25], [-120.25, 59.15], [-120.0, 59.25], [-119.75, 59.15], [-119.5, 59.25], [-119.25, 59.15], [-119.0, 59.25], [-118.75, 59.15], [-118.5, 59.25], [-118.25, 59.15], [-118.0, 59.25], [-117.75, 59.15], [-117.5, 59.25], [-117.25, 59.15], [-117.0, 59.25], [-116.5, 59.04], [-116.0, 59.25], [-115.75, 59.15], [-115.5, 59.25], [-115.25, 59.15], [-115.0, 59.25], [-114.47, 59.03], [-114.32, 58.68], [-114.25, 58.65], [-114.0, 58.75], [-113.47, 58.53], [-113.32, 58.18], [-113.25, 58.15], [-113.0, 58.25], [-112.75, 58.15], [-112.5, 58.25], [-112.25, 58.15], [-112.0, 58.25], [-111.75, 58.15], [-111.5, 58.25], [-111.25, 58.15], [-111.0, 58.25], [-110.75, 58.15], [-110.5, 58.25], [-109.97, 58.03], [-109.75, 57.5], 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"description": "Mean t2m anomaly over entire duration", "value": -6.285124563652448}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [8.337268664115072, 5.393176184523668, 8.449677933242981]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.366636542714502, 3.359002203565467, 6.295368264444164]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.307652833941156, -8.289060562888471, -5.258660294127719]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.491702678320223, -9.01184984355416, -6.251109737858428]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5485972629380085, -2.4359708243378693, -1.5352268491120482]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8781122040427172, -2.8410986186375804, -1.8071719616174482]}}