{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:07.229838", "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": "2026-Jan-31_to_2026-Feb-03_44.0_25.5"}, "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": 2026010002739}, "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 31 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 03 2026"}, "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": 86874.04928128027}, "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": ["Saudi Arabia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 25.5}, "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": 44.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "44.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 42.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 48.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.25}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[44.0, 26.25], [44.3, 26.13], [44.47, 26.53], [45.0, 26.75], [45.25, 26.65], [45.5, 26.75], [45.75, 26.65], [46.0, 26.75], [46.53, 26.53], [46.68, 26.18], [46.75, 26.15], [46.82, 26.18], [46.97, 26.53], [47.5, 26.75], [48.03, 26.53], [48.18, 26.18], [48.53, 26.03], [48.75, 25.5], [48.54, 25.0], [48.75, 24.5], [48.65, 24.25], [48.75, 24.0], [48.53, 23.47], [48.0, 23.25], [47.5, 23.46], [47.18, 23.32], [47.03, 22.97], [46.5, 22.75], [45.97, 22.97], [45.75, 23.5], [45.85, 23.75], [45.75, 24.0], [45.85, 24.25], [45.82, 24.32], [45.7, 24.38], [45.53, 23.97], [45.0, 23.75], [44.75, 23.85], [44.5, 23.75], [44.25, 23.85], [44.0, 23.75], [43.75, 23.85], [43.5, 23.75], [43.25, 23.85], [43.0, 23.75], [42.47, 23.97], [42.25, 24.5], [42.47, 25.03], [42.82, 25.18], [42.97, 25.53], [43.32, 25.68], [43.47, 26.03], [44.0, 26.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.47, 26.03], [44.0, 26.25], [44.53, 26.03], [44.75, 25.5], [44.53, 24.97], [44.0, 24.75], [43.47, 24.97], [43.25, 25.5], [43.47, 26.03]]]]}, "2026-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.97, 25.53], [43.32, 25.68], [43.47, 26.03], [44.0, 26.25], [44.3, 26.13], [44.47, 26.53], [45.0, 26.75], [45.25, 26.65], [45.5, 26.75], [45.75, 26.65], [46.0, 26.75], [46.53, 26.53], [46.68, 26.18], [46.75, 26.15], [46.82, 26.18], [46.97, 26.53], [47.5, 26.75], [48.03, 26.53], [48.18, 26.18], [48.53, 26.03], [48.75, 25.5], [48.54, 25.0], [48.75, 24.5], [48.65, 24.25], [48.75, 24.0], [48.53, 23.47], [48.0, 23.25], [47.5, 23.46], [47.18, 23.32], [47.03, 22.97], [46.5, 22.75], [45.97, 22.97], [45.75, 23.5], [45.85, 23.75], [45.75, 24.0], [45.85, 24.25], [45.82, 24.32], [45.7, 24.38], [45.53, 23.97], [45.0, 23.75], [44.75, 23.85], [44.5, 23.75], [44.25, 23.85], [44.0, 23.75], [43.75, 23.85], [43.5, 23.75], [43.25, 23.85], [43.0, 23.75], [42.47, 23.97], [42.25, 24.5], [42.47, 25.03], [42.82, 25.18], [42.97, 25.53]]]]}, "2026-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.97, 25.53], [43.32, 25.68], [43.47, 26.03], [44.0, 26.25], [44.3, 26.13], [44.47, 26.53], [45.0, 26.75], [45.25, 26.65], [45.5, 26.75], [45.75, 26.65], [46.0, 26.75], [46.53, 26.53], [46.68, 26.18], [46.75, 26.15], [46.82, 26.18], [46.97, 26.53], [47.5, 26.75], [48.03, 26.53], [48.18, 26.18], [48.53, 26.03], [48.75, 25.5], [48.54, 25.0], [48.75, 24.5], [48.65, 24.25], [48.75, 24.0], [48.53, 23.47], [48.0, 23.25], [47.5, 23.46], [47.18, 23.32], [47.03, 22.97], [46.5, 22.75], [45.97, 22.97], [45.75, 23.5], [45.85, 23.75], [45.75, 24.0], [45.85, 24.25], [45.82, 24.32], [45.7, 24.38], [45.53, 23.97], [45.0, 23.75], [44.75, 23.85], [44.5, 23.75], [44.25, 23.85], [44.0, 23.75], [43.75, 23.85], [43.5, 23.75], [43.25, 23.85], [43.0, 23.75], [42.47, 23.97], [42.25, 24.5], [42.47, 25.03], [42.82, 25.18], [42.97, 25.53]]]]}, "2026-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.97, 25.53], [43.32, 25.68], [43.47, 26.03], [44.0, 26.25], [44.3, 26.13], [44.47, 26.53], [45.0, 26.75], [45.25, 26.65], [45.5, 26.75], [45.75, 26.65], [46.0, 26.75], [46.53, 26.53], [46.68, 26.18], [46.75, 26.15], [46.82, 26.18], [46.97, 26.53], [47.5, 26.75], [48.03, 26.53], [48.18, 26.18], [48.53, 26.03], [48.75, 25.5], [48.54, 25.0], [48.75, 24.5], [48.65, 24.25], [48.75, 24.0], [48.53, 23.47], [48.0, 23.25], [47.5, 23.46], [47.18, 23.32], [47.03, 22.97], [46.5, 22.75], [45.97, 22.97], [45.75, 23.5], [45.85, 23.75], [45.75, 24.0], [45.85, 24.25], [45.82, 24.32], [45.7, 24.38], [45.53, 23.97], [45.0, 23.75], [44.75, 23.85], [44.5, 23.75], [44.25, 23.85], [44.0, 23.75], [43.75, 23.85], [43.5, 23.75], [43.25, 23.85], [43.0, 23.75], [42.47, 23.97], [42.25, 24.5], [42.47, 25.03], [42.82, 25.18], [42.97, 25.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.991043201290722}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.917872746862827}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.799178059895837, 20.951035333448942, 21.167694058982306, 21.98804257300594]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.799178059895837, 22.32312927246096, 21.87957661946615, 22.805706278483115]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.587407194141804, 5.489290176814158, 5.695428897057694, 6.5795593458366595]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.587407194141804, 5.949625351480563, 6.802749812972479, 7.991043201290722]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.376279122058837, 1.4819523130868562, 1.5426645507576406, 1.7754337442315902]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.376279122058837, 1.624508006937738, 1.8079833339153066, 2.2529261895057897]}}