{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:48.363058", "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": "2024-Mar-15_to_2024-Mar-17_245.0_34.0"}, "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": 2024030000383}, "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 15 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 17 2024"}, "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": 103091.08984731096}, "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": ["Mexico", "United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": 34.0}, "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": 245.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "245.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 244.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 247.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 32.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 35.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-116.18, 35.18], [-116.03, 35.53], [-115.5, 35.75], [-115.25, 35.65], [-115.0, 35.75], [-114.75, 35.65], [-114.5, 35.75], [-114.25, 35.65], [-114.0, 35.75], [-113.47, 35.53], [-113.32, 35.18], [-112.97, 35.03], [-112.82, 34.68], [-112.47, 34.53], [-112.25, 34.0], [-112.35, 33.75], [-112.25, 33.5], [-112.35, 33.25], [-112.25, 33.0], [-112.35, 32.75], [-112.25, 32.5], [-112.35, 32.25], [-112.25, 32.0], [-112.47, 31.47], [-113.0, 31.25], [-113.25, 31.35], [-113.5, 31.25], [-113.75, 31.35], [-114.0, 31.25], [-114.25, 31.35], [-114.5, 31.25], [-115.03, 31.47], [-115.18, 31.82], [-115.25, 31.85], [-115.5, 31.75], [-116.03, 31.97], [-116.18, 32.32], [-116.53, 32.47], [-116.75, 33.0], [-116.54, 33.5], [-116.75, 34.0], [-116.65, 34.25], [-116.75, 34.5], [-116.53, 35.03], [-116.18, 35.18]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America", "N.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.75, 34.5], [-116.53, 35.03], [-116.18, 35.18], [-116.03, 35.53], [-115.5, 35.75], [-115.25, 35.65], [-115.0, 35.75], [-114.75, 35.65], [-114.5, 35.75], [-114.25, 35.65], [-114.0, 35.75], [-113.47, 35.53], [-113.32, 35.18], [-112.97, 35.03], [-112.82, 34.68], [-112.47, 34.53], [-112.25, 34.0], [-112.35, 33.75], [-112.25, 33.5], [-112.35, 33.25], [-112.25, 33.0], [-112.35, 32.75], [-112.25, 32.5], [-112.35, 32.25], [-112.25, 32.0], [-112.47, 31.47], [-113.0, 31.25], [-113.25, 31.35], [-113.5, 31.25], [-113.75, 31.35], [-114.0, 31.25], [-114.25, 31.35], [-114.5, 31.25], [-115.03, 31.47], [-115.18, 31.82], [-115.25, 31.85], [-115.5, 31.75], [-116.03, 31.97], [-116.18, 32.32], [-116.53, 32.47], [-116.75, 33.0], [-116.53999999999999, 33.5], [-116.75, 34.0], [-116.65, 34.25], [-116.75, 34.5]]]]}, "2024-03-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.75, 34.5], [-116.53, 35.03], [-116.18, 35.18], [-116.03, 35.53], [-115.5, 35.75], [-115.25, 35.65], [-115.0, 35.75], [-114.75, 35.65], [-114.5, 35.75], [-114.25, 35.65], [-114.0, 35.75], [-113.47, 35.53], [-113.32, 35.18], [-112.97, 35.03], [-112.82, 34.68], [-112.47, 34.53], [-112.25, 34.0], [-112.35, 33.75], [-112.25, 33.5], [-112.35, 33.25], [-112.25, 33.0], [-112.35, 32.75], [-112.25, 32.5], [-112.35, 32.25], [-112.25, 32.0], [-112.47, 31.47], [-113.0, 31.25], [-113.25, 31.35], [-113.5, 31.25], [-113.75, 31.35], [-114.0, 31.25], [-114.25, 31.35], [-114.5, 31.25], [-115.03, 31.47], [-115.18, 31.82], [-115.25, 31.85], [-115.5, 31.75], [-116.03, 31.97], [-116.18, 32.32], [-116.53, 32.47], [-116.75, 33.0], [-116.53999999999999, 33.5], [-116.75, 34.0], [-116.65, 34.25], [-116.75, 34.5]]]]}, "2024-03-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-116.75, 34.5], [-116.53, 35.03], [-116.18, 35.18], [-116.03, 35.53], [-115.5, 35.75], [-115.25, 35.65], [-115.0, 35.75], [-114.75, 35.65], [-114.5, 35.75], [-114.25, 35.65], [-114.0, 35.75], [-113.47, 35.53], [-113.32, 35.18], [-112.97, 35.03], [-112.82, 34.68], [-112.47, 34.53], [-112.25, 34.0], [-112.35, 33.75], [-112.25, 33.5], [-112.35, 33.25], [-112.25, 33.0], [-112.35, 32.75], [-112.25, 32.5], [-112.35, 32.25], [-112.25, 32.0], [-112.47, 31.47], [-113.0, 31.25], [-113.25, 31.35], [-113.5, 31.25], [-113.75, 31.35], [-114.0, 31.25], [-114.25, 31.35], [-114.5, 31.25], [-115.03, 31.47], [-115.18, 31.82], [-115.25, 31.85], [-115.5, 31.75], [-116.03, 31.97], [-116.18, 32.32], [-116.53, 32.47], [-116.75, 33.0], [-116.53999999999999, 33.5], [-116.75, 34.0], [-116.65, 34.25], [-116.75, 34.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.467875884376838}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.886482869841903}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.386244920933166, 11.532519475355514, 12.702226630214795]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.794985924589639, 5.376730224189714, 7.236686277738556]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.663027613758862, -7.549332020376427, -6.447088975390422]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.225453825653801, -9.467875884376838, -7.636942075177899]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7466190291876988, -1.911638204964833, -1.61524341524532]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0941273075767914, -2.3026230287219813, -1.9273751031067925]}}