{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:22:02.935603", "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": "2021-Jan-15_to_2021-Jan-20_42.5_21.0"}, "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": 2021010002067}, "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 15 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 20 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 159873.88320068203}, "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": 21.0}, "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": 42.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "42.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 42.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 46.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 24.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[42.375, 21.802], [41.97, 21.97], [41.75, 22.5], [41.854, 22.75], [41.75, 23.0], [41.97, 23.53], [42.323, 23.677], [42.47, 24.03], [42.823, 24.177], [42.97, 24.53], [43.5, 24.75], [43.75, 24.646], [44.0, 24.75], [44.25, 24.646], [44.274, 24.656], [44.323, 24.677], [44.47, 25.03], [45.0, 25.25], [45.25, 25.146], [45.5, 25.25], [45.75, 25.146], [46.0, 25.25], [46.53, 25.03], [46.75, 24.5], [46.646, 24.25], [46.75, 24.0], [46.646, 23.75], [46.677, 23.677], [47.03, 23.53], [47.25, 23.0], [47.146, 22.75], [47.25, 22.5], [47.03, 21.97], [46.677, 21.823], [46.646, 21.75], [46.646, 21.749], [46.677, 21.677], [47.03, 21.53], [47.25, 21.0], [47.03, 20.47], [46.5, 20.25], [46.25, 20.354], [46.177, 20.323], [46.03, 19.97], [45.5, 19.75], [44.97, 19.97], [44.823, 20.323], [44.75, 20.354], [44.5, 20.25], [44.25, 20.354], [44.0, 20.25], [43.75, 20.354], [43.5, 20.25], [43.25, 20.354], [43.0, 20.25], [42.75, 20.354], [42.5, 20.25], [41.97, 20.47], [41.75, 21.0], [41.97, 21.53], [42.323, 21.677], [42.375, 21.802]]]}}, "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": {"2021-01-15T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[41.85355339059328, 22.75], [41.75, 23.0], [41.96966991411009, 23.53033008588991], [42.32322330470336, 23.67677669529664], [42.46966991411009, 24.03033008588991], [42.82322330470336, 24.17677669529664], [42.96966991411009, 24.53033008588991], [43.5, 24.75], [43.75, 24.646446609406727], [44.0, 24.75], [44.25, 24.646446609406727], [44.32322330470336, 24.67677669529664], [44.46966991411009, 25.03033008588991], [45.0, 25.25], [45.25, 25.146446609406727], [45.5, 25.25], [45.75, 25.146446609406727], [46.0, 25.25], [46.53033008588991, 25.03033008588991], [46.75, 24.5], [46.64644660940672, 24.25], [46.75, 24.0], [46.64644660940672, 23.75], [46.67677669529664, 23.67677669529664], [47.03033008588991, 23.53033008588991], [47.25, 23.0], [47.14644660940672, 22.75], [47.25, 22.5], [47.03033008588991, 21.96966991411009], [46.67677669529664, 21.82322330470336], [46.53033008588991, 21.46966991411009], [46.0, 21.25], [45.5, 21.45710678118655], [45.0, 21.25], [44.75, 21.353553390593273], [44.67677669529664, 21.32322330470336], [44.53033008588991, 20.96966991411009], [44.0, 20.75], [43.75, 20.853553390593273], [43.5, 20.75], [42.96966991411009, 20.96966991411009], [42.75, 21.5], [42.85355339059328, 21.75], [42.82322330470336, 21.82322330470336], [42.75, 21.853553390593273], [42.5, 21.75], [41.96966991411009, 21.96966991411009], [41.75, 22.5], [41.85355339059328, 22.75]]]}, "2021-01-16T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[41.85355339059328, 22.75], [41.75, 23.0], [41.96966991411009, 23.53033008588991], [42.32322330470336, 23.67677669529664], [42.46966991411009, 24.03033008588991], [42.82322330470336, 24.17677669529664], [42.96966991411009, 24.53033008588991], [43.5, 24.75], [43.75, 24.646446609406727], [44.0, 24.75], [44.25, 24.646446609406727], [44.32322330470336, 24.67677669529664], [44.46966991411009, 25.03033008588991], [45.0, 25.25], [45.25, 25.146446609406727], [45.5, 25.25], [45.75, 25.146446609406727], [46.0, 25.25], [46.53033008588991, 25.03033008588991], [46.75, 24.5], [46.64644660940672, 24.25], [46.75, 24.0], [46.64644660940672, 23.75], [46.67677669529664, 23.67677669529664], [47.03033008588991, 23.53033008588991], [47.25, 23.0], [47.14644660940672, 22.75], [47.25, 22.5], [47.03033008588991, 21.96966991411009], [46.67677669529664, 21.82322330470336], [46.64644660940672, 21.75], [46.67677669529664, 21.67677669529664], [47.03033008588991, 21.53033008588991], [47.25, 21.0], [47.03033008588991, 20.46966991411009], [46.5, 20.25], [46.25, 20.353553390593273], [46.17677669529664, 20.32322330470336], [46.03033008588991, 19.96966991411009], [45.5, 19.75], [44.96966991411009, 19.96966991411009], [44.82322330470336, 20.32322330470336], [44.75, 20.353553390593273], [44.5, 20.25], [44.25, 20.353553390593273], [44.0, 20.25], [43.75, 20.353553390593273], [43.5, 20.25], [43.25, 20.353553390593273], [43.0, 20.25], [42.75, 20.353553390593273], [42.5, 20.25], [41.96966991411009, 20.46966991411009], [41.75, 21.0], [41.96966991411009, 21.53033008588991], [42.32322330470336, 21.67677669529664], [42.375, 21.801776695296635], [41.96966991411009, 21.96966991411009], [41.75, 22.5], [41.85355339059328, 22.75]]]}, "2021-01-17T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[41.85355339059328, 22.75], [41.75, 23.0], [41.96966991411009, 23.53033008588991], [42.32322330470336, 23.67677669529664], [42.46966991411009, 24.03033008588991], [42.82322330470336, 24.17677669529664], [42.96966991411009, 24.53033008588991], [43.5, 24.75], [43.75, 24.646446609406727], [44.0, 24.75], [44.25, 24.646446609406727], [44.32322330470336, 24.67677669529664], [44.46966991411009, 25.03033008588991], [45.0, 25.25], [45.25, 25.146446609406727], [45.5, 25.25], [45.75, 25.146446609406727], [46.0, 25.25], [46.53033008588991, 25.03033008588991], [46.75, 24.5], [46.64644660940672, 24.25], [46.75, 24.0], [46.64644660940672, 23.75], [46.67677669529664, 23.67677669529664], [47.03033008588991, 23.53033008588991], [47.25, 23.0], [47.14644660940672, 22.75], [47.25, 22.5], [47.03033008588991, 21.96966991411009], [46.67677669529664, 21.82322330470336], [46.64644660940672, 21.75], [46.67677669529664, 21.67677669529664], [47.03033008588991, 21.53033008588991], [47.25, 21.0], [47.03033008588991, 20.46966991411009], [46.5, 20.25], [46.25, 20.353553390593273], [46.17677669529664, 20.32322330470336], [46.03033008588991, 19.96966991411009], [45.5, 19.75], [44.96966991411009, 19.96966991411009], [44.82322330470336, 20.32322330470336], [44.75, 20.353553390593273], [44.5, 20.25], [44.25, 20.353553390593273], [44.0, 20.25], [43.75, 20.353553390593273], [43.5, 20.25], [43.25, 20.353553390593273], [43.0, 20.25], [42.75, 20.353553390593273], [42.5, 20.25], [41.96966991411009, 20.46966991411009], [41.75, 21.0], [41.96966991411009, 21.53033008588991], [42.32322330470336, 21.67677669529664], [42.375, 21.801776695296635], [41.96966991411009, 21.96966991411009], [41.75, 22.5], [41.85355339059328, 22.75]]]}, "2021-01-18T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[42.32322330470336, 21.67677669529664], [42.46966991411009, 22.03033008588991], [43.0, 22.25], [43.25, 22.146446609406727], [43.32322330470336, 22.17677669529664], [43.35355339059328, 22.25], [43.25, 22.5], [43.46966991411009, 23.03033008588991], [43.82322330470336, 23.17677669529664], [43.85355339059328, 23.25], [43.75, 23.5], [43.85355339059328, 23.75], [43.75, 24.0], [43.96966991411009, 24.53033008588991], [44.5, 24.75], [44.75, 24.646446609406727], [45.0, 24.75], [45.25, 24.646446609406727], [45.32322330470336, 24.67677669529664], [45.46966991411009, 25.03033008588991], [46.0, 25.25], [46.53033008588991, 25.03033008588991], [46.75, 24.5], [46.64644660940672, 24.25], [46.75, 24.0], [46.64644660940672, 23.75], [46.67677669529664, 23.67677669529664], [47.03033008588991, 23.53033008588991], [47.25, 23.0], [47.14644660940672, 22.75], [47.25, 22.5], [47.03033008588991, 21.96966991411009], [46.67677669529664, 21.82322330470336], [46.64644660940672, 21.75], [46.67677669529664, 21.67677669529664], [47.03033008588991, 21.53033008588991], [47.25, 21.0], [47.03033008588991, 20.46966991411009], [46.5, 20.25], [46.25, 20.353553390593273], [46.17677669529664, 20.32322330470336], [46.03033008588991, 19.96966991411009], [45.5, 19.75], [44.96966991411009, 19.96966991411009], [44.82322330470336, 20.32322330470336], [44.75, 20.353553390593273], [44.5, 20.25], [44.25, 20.353553390593273], [44.0, 20.25], [43.75, 20.353553390593273], [43.5, 20.25], [43.25, 20.353553390593273], [43.0, 20.25], [42.75, 20.353553390593273], [42.5, 20.25], [41.96966991411009, 20.46966991411009], [41.75, 21.0], [41.96966991411009, 21.53033008588991], [42.32322330470336, 21.67677669529664]]]}, "2021-01-19T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[41.75, 21.0], [41.96966991411009, 21.53033008588991], [42.5, 21.75], [43.03033008588991, 21.53033008588991], [43.25, 21.0], [43.03033008588991, 20.46966991411009], [42.5, 20.25], [41.96966991411009, 20.46966991411009], [41.75, 21.0]]]}, "2021-01-20T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[41.75, 21.0], [41.96966991411009, 21.53033008588991], [42.5, 21.75], [43.03033008588991, 21.53033008588991], [43.25, 21.0], [43.03033008588991, 20.46966991411009], [42.5, 20.25], [41.96966991411009, 20.46966991411009], [41.75, 21.0]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.623683901598724}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.9504626280751145}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.28222673310671, 19.85733505447456, 20.15984467223109, 20.420667375810297, 21.12430876002105, 21.583577139086003]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.7550214589711, 21.85159269892705, 21.408847241609294, 21.94391452418955, 21.12430876002105, 21.583577139086003]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.82700381573042, 4.905248869600664, 5.057302480924065, 5.038808566216292, 3.727932941532572, 4.038100059645501]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.846070437331946, 6.2926308335513, 6.623683901598724, 6.321384977404364, 3.727932941532572, 4.038100059645501]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4226207704674725, 1.504760235062383, 1.6279836481072587, 1.683151768138203, 1.3084760201208065, 1.4712378213554782]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5971383583966874, 1.7611241197935235, 2.008236463587361, 2.0934867740408416, 1.3084760201208065, 1.4712378213554782]}}