{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:34.864514", "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-Mar-27_to_2018-Mar-30_298.0_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": 2018030002727}, "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": "March 27 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 30 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 103331.41570921626}, "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.E.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": ["Labrador Sea"]}, "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": 298.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "298.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 291.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 300.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 53.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 59.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-03-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.03, 54.97], [-69.25, 55.5], [-69.03, 56.03], [-68.5, 56.25], [-68.25, 56.15], [-68.0, 56.25], [-67.75, 56.15], [-67.5, 56.25], [-67.25, 56.15], [-67.0, 56.25], [-66.75, 56.15], [-66.68, 56.18], [-66.53, 56.53], [-66.18, 56.68], [-66.03, 57.03], [-65.5, 57.25], [-65.25, 57.15], [-65.18, 57.18], [-65.03, 57.53], [-64.68, 57.68], [-64.65, 57.75], [-64.75, 58.0], [-64.53, 58.53], [-64.0, 58.75], [-63.75, 58.65], [-63.5, 58.75], [-62.97, 58.53], [-62.82, 58.18], [-62.75, 58.15], [-62.5, 58.25], [-61.97, 58.03], [-61.82, 57.68], [-61.47, 57.53], [-61.32, 57.18], [-60.97, 57.03], [-60.75, 56.5], [-60.85, 56.25], [-60.82, 56.18], [-60.47, 56.03], [-60.32, 55.68], [-60.25, 55.65], [-60.0, 55.75], [-59.47, 55.53], [-59.32, 55.18], [-58.97, 55.03], [-58.75, 54.5], [-58.97, 53.97], [-59.5, 53.75], [-59.75, 53.85], [-60.0, 53.75], [-60.25, 53.85], [-60.32, 53.82], [-60.35, 53.75], [-60.25, 53.5], [-60.47, 52.97], [-61.0, 52.75], [-61.53, 52.97], [-61.75, 53.5], [-61.65, 53.75], [-61.75, 54.0], [-61.65, 54.25], [-61.68, 54.32], [-61.75, 54.35], [-62.0, 54.25], [-62.53, 54.47], [-62.68, 54.82], [-62.75, 54.85], [-63.0, 54.75], [-63.53, 54.97], [-63.68, 55.32], [-63.75, 55.35], [-63.82, 55.32], [-63.97, 54.97], [-64.5, 54.75], [-64.75, 54.85], [-65.0, 54.75], [-65.5, 54.96], [-66.0, 54.75], [-66.25, 54.85], [-66.32, 54.82], [-66.47, 54.47], [-67.0, 54.25], [-67.53, 54.47], [-67.68, 54.82], [-67.75, 54.85], [-68.0, 54.75], [-68.25, 54.85], [-68.5, 54.75], [-69.03, 54.97]]]]}, "2018-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.03, 54.97], [-69.25, 55.5], [-69.03, 56.03], [-68.5, 56.25], [-68.25, 56.15], [-68.0, 56.25], [-67.75, 56.15], [-67.5, 56.25], [-67.25, 56.15], [-67.0, 56.25], [-66.75, 56.15], [-66.68, 56.18], [-66.53, 56.53], [-66.18, 56.68], [-66.03, 57.03], [-65.5, 57.25], [-65.25, 57.15], [-65.18, 57.18], [-65.03, 57.53], [-64.68, 57.68], [-64.65, 57.75], [-64.68, 57.82], [-65.03, 57.97], [-65.25, 58.5], [-65.03, 59.03], [-64.5, 59.25], [-64.25, 59.15], [-64.18, 59.18], [-64.03, 59.53], [-63.5, 59.75], [-62.97, 59.53], [-62.75, 59.0], [-62.85, 58.75], [-62.75, 58.5], [-62.85, 58.25], [-62.82, 58.18], [-62.75, 58.15], [-62.5, 58.25], [-61.97, 58.03], [-61.82, 57.68], [-61.47, 57.53], [-61.32, 57.18], [-60.97, 57.03], [-60.75, 56.5], [-60.85, 56.25], [-60.82, 56.18], [-60.47, 56.03], [-60.32, 55.68], [-60.25, 55.65], [-60.0, 55.75], [-59.47, 55.53], [-59.32, 55.18], [-58.97, 55.03], [-58.75, 54.5], [-58.97, 53.97], [-59.5, 53.75], [-59.75, 53.85], [-60.0, 53.75], [-60.25, 53.85], [-60.32, 53.82], [-60.35, 53.75], [-60.25, 53.5], [-60.47, 52.97], [-61.0, 52.75], [-61.53, 52.97], [-61.75, 53.5], [-61.65, 53.75], [-61.75, 54.0], [-61.65, 54.25], [-61.68, 54.32], [-61.75, 54.35], [-62.0, 54.25], [-62.53, 54.47], [-62.68, 54.82], [-62.75, 54.85], [-63.0, 54.75], [-63.53, 54.97], [-63.68, 55.32], [-63.75, 55.35], [-63.82, 55.32], [-63.97, 54.97], [-64.5, 54.75], [-64.75, 54.85], [-65.0, 54.75], [-65.5, 54.96], [-66.0, 54.75], [-66.25, 54.85], [-66.32, 54.82], [-66.47, 54.47], [-67.0, 54.25], [-67.53, 54.47], [-67.68, 54.82], [-67.75, 54.85], [-68.0, 54.75], [-68.25, 54.85], [-68.5, 54.75], [-69.03, 54.97]]]]}, "2018-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.03, 54.97], [-69.25, 55.5], [-69.03, 56.03], [-68.5, 56.25], [-68.25, 56.15], [-68.0, 56.25], [-67.75, 56.15], [-67.5, 56.25], [-67.25, 56.15], [-67.0, 56.25], [-66.75, 56.15], [-66.68, 56.18], [-66.53, 56.53], [-66.18, 56.68], [-66.03, 57.03], [-65.5, 57.25], [-65.25, 57.15], [-65.18, 57.18], [-65.03, 57.53], [-64.68, 57.68], [-64.65, 57.75], [-64.68, 57.82], [-65.03, 57.97], [-65.25, 58.5], [-65.03, 59.03], [-64.5, 59.25], [-64.25, 59.15], [-64.18, 59.18], [-64.03, 59.53], [-63.5, 59.75], [-62.97, 59.53], [-62.75, 59.0], [-62.85, 58.75], [-62.75, 58.5], [-62.85, 58.25], [-62.82, 58.18], [-62.75, 58.15], [-62.5, 58.25], [-61.97, 58.03], [-61.82, 57.68], [-61.47, 57.53], [-61.32, 57.18], [-60.97, 57.03], [-60.75, 56.5], [-60.85, 56.25], [-60.82, 56.18], [-60.47, 56.03], [-60.32, 55.68], [-60.25, 55.65], [-60.0, 55.75], [-59.47, 55.53], [-59.32, 55.18], [-58.97, 55.03], [-58.75, 54.5], [-58.97, 53.97], [-59.5, 53.75], [-59.75, 53.85], [-60.0, 53.75], [-60.25, 53.85], [-60.32, 53.82], [-60.35, 53.75], [-60.25, 53.5], [-60.47, 52.97], [-61.0, 52.75], [-61.53, 52.97], [-61.75, 53.5], [-61.65, 53.75], [-61.75, 54.0], [-61.65, 54.25], [-61.68, 54.32], [-61.75, 54.35], [-62.0, 54.25], [-62.53, 54.47], [-62.68, 54.82], [-62.75, 54.85], [-63.0, 54.75], [-63.53, 54.97], [-63.68, 55.32], [-63.75, 55.35], [-63.82, 55.32], [-63.97, 54.97], [-64.5, 54.75], [-64.75, 54.85], [-65.0, 54.75], [-65.5, 54.96], [-66.0, 54.75], [-66.25, 54.85], [-66.32, 54.82], [-66.47, 54.47], [-67.0, 54.25], [-67.53, 54.47], [-67.68, 54.82], [-67.75, 54.85], [-68.0, 54.75], [-68.25, 54.85], [-68.5, 54.75], [-69.03, 54.97]]]]}, "2018-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.53, 54.97], [-68.75, 55.5], [-68.53, 56.03], [-68.0, 56.25], [-67.75, 56.15], [-67.5, 56.25], [-67.25, 56.15], [-67.0, 56.25], [-66.75, 56.15], [-66.68, 56.18], [-66.53, 56.53], [-66.18, 56.68], [-66.03, 57.03], [-65.5, 57.25], [-65.25, 57.15], [-65.18, 57.18], [-65.03, 57.53], [-64.68, 57.68], [-64.65, 57.75], [-64.68, 57.82], [-65.03, 57.97], [-65.25, 58.5], [-65.03, 59.03], [-64.5, 59.25], [-64.25, 59.15], [-64.18, 59.18], [-64.03, 59.53], [-63.5, 59.75], [-62.97, 59.53], [-62.75, 59.0], [-62.85, 58.75], [-62.75, 58.5], [-62.85, 58.25], [-62.82, 58.18], [-62.75, 58.15], [-62.5, 58.25], [-61.97, 58.03], [-61.82, 57.68], [-61.47, 57.53], [-61.25, 57.0], [-61.35, 56.75], [-61.32, 56.68], [-60.97, 56.53], [-60.82, 56.18], [-60.47, 56.03], [-60.32, 55.68], [-60.25, 55.65], [-60.0, 55.75], [-59.47, 55.53], [-59.25, 55.0], [-59.47, 54.47], [-60.0, 54.25], [-60.25, 54.35], [-60.32, 54.32], [-60.46, 54.0], [-60.25, 53.5], [-60.47, 52.97], [-61.0, 52.75], [-61.53, 52.97], [-61.75, 53.5], [-61.54, 54.0], [-61.75, 54.5], [-61.65, 54.75], [-61.68, 54.82], [-61.75, 54.85], [-62.0, 54.75], [-62.25, 54.85], [-62.5, 54.75], [-62.75, 54.85], [-63.0, 54.75], [-63.53, 54.97], [-63.68, 55.32], [-63.75, 55.35], [-63.82, 55.32], [-63.97, 54.97], [-64.5, 54.75], [-64.75, 54.85], [-65.0, 54.75], [-65.5, 54.96], [-66.0, 54.75], [-66.25, 54.85], [-66.5, 54.75], [-66.75, 54.85], [-67.0, 54.75], [-67.25, 54.85], [-67.5, 54.75], [-67.75, 54.85], [-68.0, 54.75], [-68.53, 54.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.398074008947788}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.542623952384009}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-1.384794709305595, -0.8808304555818154, -2.8942137776153345, -1.9088379736195407]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.4409583803682153, 1.8444966856479255, 0.9983473185457683, 0.3143249813248872]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [9.839487024069273, 10.605172004175195, 8.28610187145898, 9.44486139814196]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.838004023727876, 12.398074008947788, 9.69985541377855, 12.318920725481803]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6758453323287696, 1.8666354270905143, 1.4619518347766127, 1.6766726024727723]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.908311146469196, 2.1678821763899707, 1.6072066678420869, 2.1193061069636725]}}