{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:20.860975", "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": "2025-Jan-28_to_2025-Jan-31_281.0_68.0"}, "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": 2025010002491}, "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": "January 28 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 31 2025"}, "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": 53563.17457085203}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 68.0}, "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": 281.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "281.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 279.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 284.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 65.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 70.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-81.65, 69.25], [-81.75, 69.5], [-81.53, 70.03], [-81.0, 70.25], [-80.75, 70.15], [-80.5, 70.25], [-80.25, 70.15], 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67.47], [-81.75, 68.0], [-81.65, 68.25], [-81.75, 68.5], [-81.65, 68.75], [-81.75, 69.0], [-81.65, 69.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.75, 68.5], [-81.64999999999998, 68.75], [-81.75, 69.0], [-81.64999999999998, 69.25], [-81.75, 69.5], [-81.52999999999997, 70.03], [-81.0, 70.25], [-80.75, 70.15], [-80.5, 70.25], [-80.25, 70.15], [-80.0, 70.25], [-79.75, 70.15], [-79.5, 70.25], [-79.25, 70.15], [-79.0, 70.25], [-78.75, 70.15], [-78.68, 70.18], [-78.52999999999997, 70.53], [-78.0, 70.75], [-77.47000000000003, 70.53], [-77.25, 70.0], [-77.35000000000002, 69.75], [-77.32, 69.68], [-76.97000000000003, 69.53], [-76.82, 69.18], [-76.75, 69.15], [-76.5, 69.25], [-75.97000000000003, 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anomaly recorded over entire duration", "value": 10.80898233199315}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.108119564016038}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-20.62497625805085, -18.48209430072319, -19.266589837040442, -20.25894454956051]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-19.533424123128242, -17.217267100016244, -18.008676910400368, -19.205858612060524]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.232842050847815, 9.13922227752939, 8.250140779248218, 7.128035096409937]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.744767919738763, 10.584957767181635, 10.80898233199315, 9.244044874509655]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4965236988608424, 1.7819163432609706, 1.5785470762775315, 1.3189206661582085]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6403656275350864, 2.032213460394184, 1.8308621242301906, 1.5939087129534177]}}