{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:56:18.715308", "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": "2023-Nov-13_to_2023-Nov-17_247.0_40.5"}, "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": 2023110001433}, "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": "November 13 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 17 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 68818.63587809067}, "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": ["United States"]}, "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": 40.5}, "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": 247.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "247.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 246.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 249.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-114.03, 41.03], [-113.68, 41.18], [-113.53, 41.53], [-113.0, 41.75], [-112.5, 41.54], [-112.0, 41.75], [-111.75, 41.65], [-111.5, 41.75], [-111.25, 41.65], [-111.0, 41.75], [-110.47, 41.53], [-110.25, 41.0], [-110.35, 40.75], [-110.25, 40.5], [-110.35, 40.25], [-110.25, 40.0], [-110.47, 39.47], [-110.82, 39.32], [-110.85, 39.25], [-110.75, 39.0], [-110.97, 38.47], [-111.5, 38.25], [-111.75, 38.35], [-111.82, 38.32], [-111.97, 37.97], [-112.32, 37.82], [-112.47, 37.47], [-113.0, 37.25], [-113.53, 37.47], [-113.75, 38.0], [-113.62, 38.3], [-114.03, 38.47], [-114.18, 38.82], [-114.53, 38.97], [-114.75, 39.5], [-114.65, 39.75], [-114.75, 40.0], [-114.53, 40.53], [-114.18, 40.68], [-114.03, 41.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.0, 38.75], [-114.53, 38.97], [-114.75, 39.5], [-114.53, 40.03], [-114.0, 40.25], [-113.75, 40.15], [-113.62, 40.2], [-113.75, 40.5], [-113.53, 41.03], [-113.0, 41.25], [-112.47, 41.03], [-112.25, 40.5], [-112.47, 39.97], [-112.87, 39.8], [-112.75, 39.5], [-112.97, 38.97], [-113.5, 38.75], [-113.75, 38.85], [-114.0, 38.75]]]]}, "2023-11-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.75, 40.0], [-114.53, 40.53], [-114.18, 40.68], [-114.03, 41.03], [-113.68, 41.18], [-113.53, 41.53], [-113.0, 41.75], [-112.5, 41.54], [-112.0, 41.75], [-111.75, 41.65], [-111.5, 41.75], [-111.25, 41.65], [-111.0, 41.75], [-110.47, 41.53], [-110.25, 41.0], [-110.35, 40.75], [-110.25, 40.5], [-110.47, 39.97], [-110.82, 39.82], [-110.85, 39.75], [-110.75, 39.5], [-110.85, 39.25], [-110.75, 39.0], [-110.97, 38.47], [-111.5, 38.25], [-111.75, 38.35], [-111.82, 38.32], [-111.97, 37.97], [-112.32, 37.82], [-112.47, 37.47], [-113.0, 37.25], [-113.53, 37.47], [-113.75, 38.0], [-113.62, 38.3], [-114.03, 38.47], [-114.18, 38.82], [-114.53, 38.97], [-114.75, 39.5], [-114.65, 39.75], [-114.75, 40.0]]]]}, "2023-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.75, 40.0], [-114.53, 40.53], [-114.18, 40.68], [-114.03, 41.03], [-113.68, 41.18], [-113.53, 41.53], [-113.0, 41.75], [-112.5, 41.54], [-112.0, 41.75], [-111.75, 41.65], [-111.5, 41.75], [-111.25, 41.65], [-111.0, 41.75], [-110.47, 41.53], [-110.25, 41.0], [-110.35, 40.75], [-110.25, 40.5], [-110.35, 40.25], [-110.25, 40.0], [-110.47, 39.47], [-110.82, 39.32], [-110.85, 39.25], [-110.75, 39.0], [-110.97, 38.47], [-111.5, 38.25], [-111.75, 38.35], [-111.82, 38.32], [-111.97, 37.97], [-112.32, 37.82], [-112.47, 37.47], [-113.0, 37.25], [-113.53, 37.47], [-113.75, 38.0], [-113.62, 38.3], [-114.03, 38.47], [-114.18, 38.82], [-114.53, 38.97], [-114.75, 39.5], [-114.65, 39.75], [-114.75, 40.0]]]]}, "2023-11-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-114.75, 40.0], [-114.53, 40.53], [-114.18, 40.68], [-114.03, 41.03], [-113.68, 41.18], [-113.53, 41.53], [-113.0, 41.75], [-112.5, 41.54], [-112.0, 41.75], [-111.75, 41.65], [-111.5, 41.75], [-111.25, 41.65], [-111.0, 41.75], [-110.47, 41.53], [-110.25, 41.0], [-110.35, 40.75], [-110.25, 40.5], [-110.35, 40.25], [-110.25, 40.0], [-110.47, 39.47], [-110.82, 39.32], [-110.85, 39.25], [-110.75, 39.0], [-110.97, 38.47], [-111.5, 38.25], [-111.75, 38.35], [-111.82, 38.32], [-111.97, 37.97], [-112.32, 37.82], [-112.47, 37.47], [-113.0, 37.25], [-113.53, 37.47], [-113.75, 38.0], [-113.62, 38.3], [-114.03, 38.47], [-114.18, 38.82], [-114.53, 38.97], [-114.75, 39.5], [-114.65, 39.75], [-114.75, 40.0]]]]}, "2023-11-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.75, 40.0], [-111.53, 40.53], [-111.0, 40.75], [-110.47, 40.53], [-110.25, 40.0], [-110.47, 39.47], [-111.0, 39.25], [-111.43, 39.43], [-111.25, 39.0], [-111.47, 38.47], [-112.0, 38.25], [-112.53, 38.47], [-112.75, 39.0], [-112.53, 39.53], [-112.0, 39.75], [-111.57, 39.57], [-111.75, 40.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.4379609466219}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.6449457257189115}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.389773263171094, 8.404090652720186, 8.316214534499068, 9.779477882005494, 4.659278537434204]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.110151484677658, 12.371819487148684, 12.483967754034893, 14.21173522217174, 6.392277802710282]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.763682021663594, 6.022642011379773, 6.275903169135016, 7.774926385045946, 5.645490792774325]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.893097497918063, 7.067000938882131, 7.56979517797555, 9.4379609466219, 5.839199785422693]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3289017614834593, 1.3938530681860815, 1.4317320070251862, 1.7732026230763704, 1.2922918400141454]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3978473357073558, 1.7657721134279327, 1.6659439176217499, 2.120670826053378, 1.299529282578361]}}