{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:08.817015", "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": "2010-Feb-10_to_2010-Feb-16_242.5_48.5"}, "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": 2010020001470}, "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": "February 10 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 16 2010"}, "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": "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": 81351.5746997955}, "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", "United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America", "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": 48.5}, "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": 242.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "242.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 236.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 243.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 53.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-118.03, 49.53], [-117.5, 49.75], [-116.97, 49.53], [-116.75, 49.0], [-116.85, 48.75], [-116.75, 48.5], [-116.97, 47.97], [-117.5, 47.75], [-118.03, 47.97], [-118.25, 48.5], [-118.15, 48.75], [-118.25, 49.0], [-118.03, 49.53]]]]}, "2010-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-118.75, 50.0], [-118.53, 50.53], [-118.0, 50.75], [-117.47, 50.53], [-117.32, 50.18], [-116.97, 50.03], [-116.75, 49.5], [-116.85, 49.25], [-116.82, 49.18], [-116.75, 49.15], [-116.5, 49.25], [-115.97, 49.03], [-115.75, 48.5], [-115.97, 47.97], [-116.5, 47.75], [-116.75, 47.85], [-117.0, 47.75], [-117.25, 47.85], [-117.5, 47.75], [-118.03, 47.97], [-118.25, 48.5], [-118.15, 48.75], [-118.25, 49.0], [-118.15, 49.25], [-118.18, 49.32], [-118.53, 49.47], [-118.75, 50.0]]]]}, "2010-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.75, 53.5], [-123.53, 54.03], [-123.0, 54.25], [-122.75, 54.15], [-122.5, 54.25], [-121.97, 54.03], [-121.82, 53.68], [-121.47, 53.53], [-121.25, 53.0], [-121.35, 52.75], [-121.25, 52.5], [-121.35, 52.25], [-121.32, 52.18], [-121.25, 52.15], [-121.0, 52.25], [-120.47, 52.03], [-120.25, 51.5], [-120.35, 51.25], [-120.32, 51.18], [-119.97, 51.03], [-119.82, 50.68], [-119.75, 50.65], [-119.5, 50.75], [-119.25, 50.65], [-119.0, 50.75], [-118.5, 50.54], [-118.0, 50.75], [-117.47, 50.53], [-117.32, 50.18], [-116.97, 50.03], [-116.75, 49.5], [-116.85, 49.25], [-116.82, 49.18], [-116.75, 49.15], [-116.5, 49.25], [-115.97, 49.03], [-115.75, 48.5], [-115.97, 47.97], [-116.5, 47.75], [-116.75, 47.85], [-116.82, 47.82], [-116.97, 47.47], [-117.5, 47.25], [-117.75, 47.35], [-118.0, 47.25], [-118.25, 47.35], [-118.5, 47.25], [-119.03, 47.47], [-119.18, 47.82], [-119.25, 47.85], [-119.5, 47.75], [-120.03, 47.97], [-120.25, 48.5], [-120.12, 48.8], [-120.25, 48.85], [-120.5, 48.75], [-120.75, 48.85], [-121.0, 48.75], [-121.53, 48.97], [-121.75, 49.5], [-121.65, 49.75], [-121.75, 50.0], [-121.65, 50.25], [-121.68, 50.32], [-121.75, 50.35], [-122.0, 50.25], [-122.53, 50.47], [-122.75, 51.0], [-122.65, 51.25], [-122.75, 51.5], [-122.65, 51.75], [-122.75, 52.0], [-122.65, 52.25], [-122.68, 52.32], [-123.03, 52.47], [-123.18, 52.82], [-123.53, 52.97], [-123.75, 53.5]]]]}, "2010-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.75, 53.5], [-123.53, 54.03], [-123.0, 54.25], [-122.75, 54.15], [-122.5, 54.25], [-121.97, 54.03], [-121.82, 53.68], [-121.47, 53.53], [-121.25, 53.0], [-121.35, 52.75], [-121.25, 52.5], [-121.35, 52.25], [-121.32, 52.18], [-121.25, 52.15], [-121.0, 52.25], [-120.47, 52.03], [-120.25, 51.5], [-120.35, 51.25], [-120.32, 51.18], [-119.97, 51.03], [-119.82, 50.68], [-119.75, 50.65], [-119.5, 50.75], [-119.25, 50.65], [-119.0, 50.75], [-118.5, 50.54], [-118.0, 50.75], [-117.47, 50.53], [-117.32, 50.18], [-116.97, 50.03], [-116.75, 49.5], [-116.85, 49.25], [-116.82, 49.18], [-116.75, 49.15], [-116.5, 49.25], [-115.97, 49.03], [-115.75, 48.5], [-115.97, 47.97], [-116.5, 47.75], [-116.75, 47.85], [-116.82, 47.82], [-116.97, 47.47], [-117.5, 47.25], [-117.75, 47.35], [-118.0, 47.25], [-118.25, 47.35], [-118.5, 47.25], [-119.03, 47.47], [-119.18, 47.82], [-119.25, 47.85], [-119.5, 47.75], [-120.03, 47.97], [-120.25, 48.5], [-120.12, 48.8], [-120.25, 48.85], [-120.5, 48.75], [-120.75, 48.85], [-121.0, 48.75], [-121.53, 48.97], [-121.75, 49.5], [-121.65, 49.75], [-121.75, 50.0], [-121.65, 50.25], [-121.68, 50.32], [-121.75, 50.35], [-122.0, 50.25], [-122.53, 50.47], [-122.75, 51.0], [-122.65, 51.25], [-122.75, 51.5], [-122.65, 51.75], [-122.75, 52.0], [-122.65, 52.25], [-122.68, 52.32], [-123.03, 52.47], [-123.18, 52.82], [-123.53, 52.97], [-123.75, 53.5]]]]}, "2010-02-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.75, 53.5], [-123.53, 54.03], [-123.0, 54.25], [-122.75, 54.15], [-122.5, 54.25], [-121.97, 54.03], [-121.82, 53.68], [-121.47, 53.53], [-121.25, 53.0], [-121.35, 52.75], [-121.25, 52.5], [-121.35, 52.25], [-121.32, 52.18], [-121.25, 52.15], [-121.0, 52.25], [-120.47, 52.03], [-120.25, 51.5], [-120.35, 51.25], [-120.32, 51.18], [-119.97, 51.03], [-119.82, 50.68], [-119.75, 50.65], [-119.5, 50.75], [-119.25, 50.65], [-119.0, 50.75], [-118.5, 50.54], [-118.0, 50.75], [-117.47, 50.53], [-117.25, 50.0], [-117.37, 49.7], [-116.97, 49.53], [-116.75, 49.0], [-116.85, 48.75], [-116.75, 48.5], [-116.85, 48.25], [-116.75, 48.0], [-116.97, 47.47], [-117.5, 47.25], [-117.75, 47.35], [-118.0, 47.25], [-118.25, 47.35], [-118.5, 47.25], [-119.03, 47.47], [-119.18, 47.82], [-119.25, 47.85], [-119.5, 47.75], [-120.03, 47.97], [-120.25, 48.5], [-120.12, 48.8], [-120.25, 48.85], [-120.5, 48.75], [-120.75, 48.85], [-121.0, 48.75], [-121.53, 48.97], [-121.75, 49.5], [-121.65, 49.75], [-121.75, 50.0], [-121.65, 50.25], [-121.68, 50.32], [-121.75, 50.35], [-122.0, 50.25], [-122.53, 50.47], [-122.75, 51.0], [-122.65, 51.25], [-122.75, 51.5], [-122.65, 51.75], [-122.75, 52.0], [-122.65, 52.25], [-122.68, 52.32], [-123.03, 52.47], [-123.18, 52.82], [-123.53, 52.97], [-123.75, 53.5]]]]}, "2010-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-118.0, 49.25], [-117.75, 49.15], [-117.5, 49.25], [-116.97, 49.03], [-116.75, 48.5], [-116.85, 48.25], [-116.75, 48.0], [-116.97, 47.47], [-117.5, 47.25], [-117.75, 47.35], [-118.0, 47.25], [-118.25, 47.35], [-118.5, 47.25], [-119.03, 47.47], [-119.25, 48.0], [-119.03, 48.53], [-118.68, 48.68], [-118.53, 49.03], [-118.0, 49.25]]]]}, "2010-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-118.0, 49.25], [-117.47, 49.03], [-117.25, 48.5], [-117.47, 47.97], [-118.0, 47.75], [-118.53, 47.97], [-118.75, 48.5], [-118.53, 49.03], [-118.0, 49.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.867506675561344}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.556398572011015}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.256642113969747, 2.022631061450454, 2.7501430327639014, 2.2309185480457927, 3.279368694400773, 4.724524180222488, 3.102036734353419]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.574964353323878, 2.7829844778510164, 6.0138317996347155, 5.100615109907324, 5.299040723343353, 5.919485773905137, 3.102036734353419]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.580594650074886, 4.849266947776793, 5.885483940577184, 5.104528269034907, 5.984452141578023, 4.8964925239421175, 3.8184730688942636]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.687195864996397, 5.321810187770552, 7.822507799979007, 6.572720527476918, 8.867506675561344, 5.4231491659454605, 3.8184730688942636]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [0.9935823864305151, 1.0913603347965797, 1.298308061406857, 1.1452301117269108, 1.3264331487633494, 1.318168476235725, 1.0329711981484246]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [0.9970368239066213, 1.1762306802995681, 1.6142464953935902, 1.3628988372517923, 1.6196085199661825, 1.4502537882098416, 1.0329711981484246]}}