{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:53.509052", "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": "2018-Jun-04_to_2018-Jun-06_244.5_58.0"}, "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": 2018060000208}, "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 04 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 06 2018"}, "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": 81943.06870571752}, "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": 58.0}, "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": 244.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "244.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 240.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 248.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 61.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.03, 57.47], [-120.25, 58.0], [-120.03, 58.53], [-119.5, 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[-115.5, 56.25], [-115.75, 56.35], [-116.0, 56.25], [-116.53, 56.47], [-116.68, 56.82], [-117.03, 56.97], [-117.18, 57.32], [-117.25, 57.35], [-117.5, 57.25], [-117.75, 57.35], [-118.0, 57.25], [-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]]]]}, "2018-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.03, 57.47], [-120.25, 58.0], [-120.03, 58.53], [-119.5, 58.75], [-119.25, 58.65], [-119.0, 58.75], [-118.75, 58.65], [-118.5, 58.75], [-118.25, 58.65], [-118.0, 58.75], [-117.75, 58.65], [-117.5, 58.75], [-117.25, 58.65], [-117.18, 58.68], [-117.03, 59.03], [-116.5, 59.25], [-116.25, 59.15], [-116.18, 59.18], [-116.03, 59.53], [-115.68, 59.68], [-115.53, 60.03], [-115.0, 60.25], [-114.75, 60.15], [-114.5, 60.25], [-114.25, 60.15], [-114.18, 60.18], [-114.03, 60.53], [-113.5, 60.75], [-113.25, 60.65], [-113.0, 60.75], [-112.75, 60.65], [-112.68, 60.68], [-112.53, 61.03], [-112.18, 61.18], [-112.03, 61.53], [-111.5, 61.75], [-110.97, 61.53], [-110.75, 61.0], [-110.85, 60.75], [-110.75, 60.5], [-110.85, 60.25], [-110.75, 60.0], [-110.97, 59.47], [-111.32, 59.32], [-111.35, 59.25], [-111.25, 59.0], [-111.47, 58.47], [-111.82, 58.32], [-111.97, 57.97], [-112.5, 57.75], [-113.0, 57.96], [-113.37, 57.8], [-113.25, 57.5], [-113.47, 56.97], [-114.0, 56.75], [-114.25, 56.85], [-114.32, 56.82], [-114.47, 56.47], [-115.0, 56.25], [-115.25, 56.35], [-115.5, 56.25], [-115.75, 56.35], [-116.0, 56.25], [-116.53, 56.47], [-116.68, 56.82], [-117.03, 56.97], [-117.18, 57.32], [-117.25, 57.35], [-117.5, 57.25], [-117.75, 57.35], [-118.0, 57.25], [-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]]]]}, "2018-06-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-120.03, 57.47], [-120.25, 58.0], [-120.03, 58.53], [-119.5, 58.75], [-119.25, 58.65], [-119.0, 58.75], [-118.75, 58.65], [-118.5, 58.75], 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56.82], [-117.03, 56.97], [-117.18, 57.32], [-117.25, 57.35], [-117.5, 57.25], [-117.75, 57.35], [-118.0, 57.25], [-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]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.694182978230856}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.468472882903281}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.18677061500739, 4.194401584584625, 7.520554642501679]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.671267045239972, 1.5914687242454875, 3.721264893693103]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.563499492718112, -9.63801022390045, -6.203908932091265]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.417214950884727, -10.694182978230856, -7.1690927288941]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6777409860860886, -2.482465642659046, -1.5562573734428382]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9920193971446656, -3.0093224960774343, -1.7751493887714724]}}