{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:20:07.225048", "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": "2020-Dec-19_to_2020-Dec-26_36.0_27.0"}, "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": 2020120002528}, "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": "December 19 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 26 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 139117.27615643298}, "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": ["Red Sea"]}, "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": 27.0}, "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": 36.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "36.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 34.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 40.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 28.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[39.677, 23.323], [39.53, 22.97], [39.0, 22.75], [38.47, 22.97], [38.323, 23.323], [37.97, 23.47], [37.75, 24.0], [37.854, 24.25], [37.75, 24.5], [37.854, 24.75], [37.823, 24.823], [37.75, 24.854], [37.5, 24.75], [37.251, 24.854], [37.25, 24.854], [37.177, 24.823], [37.146, 24.75], [37.25, 24.5], [37.146, 24.25], [37.25, 24.0], [37.03, 23.47], [36.5, 23.25], [35.97, 23.47], [35.823, 23.823], [35.47, 23.97], [35.323, 24.323], [34.97, 24.47], [34.823, 24.823], [34.47, 24.97], [34.25, 25.5], [34.354, 25.75], [34.25, 26.0], [34.354, 26.25], [34.25, 26.5], [34.354, 26.75], [34.25, 27.0], [34.354, 27.25], [34.323, 27.323], [33.97, 27.47], [33.75, 28.0], [33.97, 28.53], [34.323, 28.677], [34.47, 29.03], [35.0, 29.25], [35.53, 29.03], [35.75, 28.5], [35.646, 28.25], [35.677, 28.177], [35.726, 28.156], [35.75, 28.146], [36.0, 28.25], [36.25, 28.146], [36.5, 28.25], [37.03, 28.03], [37.177, 27.677], [37.53, 27.53], [37.75, 27.0], [37.646, 26.75], [37.75, 26.5], [37.646, 26.25], [37.656, 26.226], [37.677, 26.177], [37.75, 26.146], [38.0, 26.25], [38.25, 26.146], [38.323, 26.177], [38.47, 26.53], [39.0, 26.75], [39.25, 26.646], [39.5, 26.75], [40.03, 26.53], [40.25, 26.0], [40.146, 25.75], [40.25, 25.5], [40.125, 25.198], [40.25, 25.146], [40.5, 25.25], [41.03, 25.03], [41.25, 24.5], [41.03, 23.97], [40.677, 23.823], [40.53, 23.47], [40.0, 23.25], [39.75, 23.354], [39.726, 23.344], [39.677, 23.323]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara", "Arabian-Peninsula"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-12-19T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[34.35355339059328, 25.75], [34.25, 26.0], [34.35355339059328, 26.25], [34.25, 26.5], [34.46966991411009, 27.03033008588991], [35.0, 27.25], [35.30177669529664, 27.125], [35.46966991411009, 27.53033008588991], [36.0, 27.75], [36.53033008588991, 27.53033008588991], [36.67677669529664, 27.17677669529664], [37.03033008588991, 27.03033008588991], [37.25, 26.5], [37.03033008588991, 25.96966991411009], [36.5, 25.75], [36.07322330470336, 25.92677669529664], [36.17677669529664, 25.67677669529664], [36.53033008588991, 25.53033008588991], [36.75, 25.0], [36.64644660940672, 24.75], [36.75, 24.5], [36.53033008588991, 23.96966991411009], [36.0, 23.75], [35.46966991411009, 23.96966991411009], [35.32322330470336, 24.32322330470336], [34.96966991411009, 24.46966991411009], [34.82322330470336, 24.82322330470336], [34.46966991411009, 24.96966991411009], [34.25, 25.5], [34.35355339059328, 25.75]], [[35.82322330470336, 26.32322330470336], [35.69822330470336, 26.375], [35.64644660940672, 26.25], [35.67677669529664, 26.17677669529664], [35.92677669529664, 26.07322330470336], [35.82322330470336, 26.32322330470336]]]}, "2020-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.96966991411009, 25.03033008588991], [39.5, 25.25], [40.03033008588991, 25.03033008588991], [40.25, 24.5], [40.03033008588991, 23.96966991411009], [39.5, 23.75], [39.19822330470336, 23.875], [39.03033008588991, 23.46966991411009], [38.5, 23.25], [37.96966991411009, 23.46966991411009], [37.75, 24.0], [37.96966991411009, 24.53033008588991], [38.5, 24.75], [38.80177669529664, 24.625], [38.96966991411009, 25.03033008588991]]], [[[33.96966991411009, 27.46966991411009], [33.75, 28.0], [33.96966991411009, 28.53033008588991], [34.5, 28.75], [35.03033008588991, 28.53033008588991], [35.17677669529664, 28.17677669529664], [35.25, 28.146446609406727], [35.5, 28.25], [36.03033008588991, 28.03033008588991], [36.17677669529664, 27.67677669529664], [36.25, 27.646446609406727], [36.5, 27.75], [37.03033008588991, 27.53033008588991], [37.25, 27.0], [37.14644660940672, 26.75], [37.17677669529664, 26.67677669529664], [37.53033008588991, 26.53033008588991], [37.75, 26.0], [37.64644660940672, 25.75], [37.75, 25.5], [37.53033008588991, 24.96966991411009], [37.17677669529664, 24.82322330470336], [37.14644660940672, 24.75], [37.25, 24.5], [37.14644660940672, 24.25], [37.25, 24.0], [37.03033008588991, 23.46966991411009], [36.5, 23.25], [35.96966991411009, 23.46966991411009], [35.82322330470336, 23.82322330470336], [35.46966991411009, 23.96966991411009], [35.32322330470336, 24.32322330470336], [34.96966991411009, 24.46966991411009], [34.82322330470336, 24.82322330470336], [34.46966991411009, 24.96966991411009], [34.25, 25.5], [34.35355339059328, 25.75], [34.25, 26.0], [34.35355339059328, 26.25], [34.25, 26.5], [34.35355339059328, 26.75], [34.25, 27.0], [34.35355339059328, 27.25], [34.32322330470336, 27.32322330470336], [33.96966991411009, 27.46966991411009]]]]}, "2020-12-21T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[34.32322330470336, 27.32322330470336], [33.96966991411009, 27.46966991411009], [33.75, 28.0], [33.96966991411009, 28.53033008588991], [34.32322330470336, 28.67677669529664], [34.46966991411009, 29.03033008588991], [35.0, 29.25], [35.53033008588991, 29.03033008588991], [35.75, 28.5], [35.64644660940672, 28.25], [35.67677669529664, 28.17677669529664], [35.75, 28.146446609406727], [36.0, 28.25], [36.25, 28.146446609406727], [36.5, 28.25], [37.03033008588991, 28.03033008588991], [37.17677669529664, 27.67677669529664], [37.53033008588991, 27.53033008588991], [37.75, 27.0], [37.64644660940672, 26.75], [37.75, 26.5], [37.64644660940672, 26.25], [37.67677669529664, 26.17677669529664], [37.75, 26.146446609406727], [38.0, 26.25], [38.25, 26.146446609406727], [38.32322330470336, 26.17677669529664], [38.46966991411009, 26.53033008588991], [39.0, 26.75], [39.25, 26.646446609406727], [39.5, 26.75], [40.03033008588991, 26.53033008588991], [40.25, 26.0], [40.14644660940672, 25.75], [40.25, 25.5], [40.125, 25.198223304703365], [40.25, 25.146446609406727], [40.5, 25.25], [41.03033008588991, 25.03033008588991], [41.25, 24.5], [41.03033008588991, 23.96966991411009], [40.67677669529664, 23.82322330470336], [40.53033008588991, 23.46966991411009], [40.0, 23.25], [39.75, 23.353553390593273], [39.67677669529664, 23.32322330470336], [39.53033008588991, 22.96966991411009], [39.0, 22.75], [38.46966991411009, 22.96966991411009], [38.32322330470336, 23.32322330470336], [37.96966991411009, 23.46966991411009], [37.75, 24.0], [37.85355339059328, 24.25], [37.75, 24.5], [37.85355339059328, 24.75], [37.82322330470336, 24.82322330470336], [37.75, 24.853553390593273], [37.5, 24.75], [37.25, 24.853553390593273], [37.17677669529664, 24.82322330470336], [37.14644660940672, 24.75], [37.25, 24.5], [37.14644660940672, 24.25], [37.25, 24.0], [37.03033008588991, 23.46966991411009], [36.5, 23.25], [35.96966991411009, 23.46966991411009], [35.82322330470336, 23.82322330470336], [35.46966991411009, 23.96966991411009], [35.32322330470336, 24.32322330470336], [34.96966991411009, 24.46966991411009], [34.82322330470336, 24.82322330470336], [34.46966991411009, 24.96966991411009], [34.25, 25.5], [34.35355339059328, 25.75], [34.25, 26.0], [34.35355339059328, 26.25], [34.25, 26.5], [34.35355339059328, 26.75], [34.25, 27.0], [34.35355339059328, 27.25], [34.32322330470336, 27.32322330470336]]]}, "2020-12-22T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[34.32322330470336, 27.32322330470336], [33.96966991411009, 27.46966991411009], [33.75, 28.0], [33.96966991411009, 28.53033008588991], [34.32322330470336, 28.67677669529664], [34.46966991411009, 29.03033008588991], [35.0, 29.25], [35.53033008588991, 29.03033008588991], [35.75, 28.5], [35.64644660940672, 28.25], [35.67677669529664, 28.17677669529664], [35.75, 28.146446609406727], [36.0, 28.25], [36.25, 28.146446609406727], [36.5, 28.25], [37.03033008588991, 28.03033008588991], [37.17677669529664, 27.67677669529664], [37.53033008588991, 27.53033008588991], [37.75, 27.0], [37.64644660940672, 26.75], [37.75, 26.5], [37.64644660940672, 26.25], [37.67677669529664, 26.17677669529664], [37.75, 26.146446609406727], [38.0, 26.25], [38.25, 26.146446609406727], [38.32322330470336, 26.17677669529664], [38.46966991411009, 26.53033008588991], [39.0, 26.75], [39.25, 26.646446609406727], [39.5, 26.75], [40.03033008588991, 26.53033008588991], [40.25, 26.0], [40.14644660940672, 25.75], [40.25, 25.5], [40.125, 25.198223304703365], [40.25, 25.146446609406727], [40.5, 25.25], [41.03033008588991, 25.03033008588991], [41.25, 24.5], [41.03033008588991, 23.96966991411009], [40.67677669529664, 23.82322330470336], [40.53033008588991, 23.46966991411009], [40.0, 23.25], [39.75, 23.353553390593273], [39.67677669529664, 23.32322330470336], [39.53033008588991, 22.96966991411009], [39.0, 22.75], [38.46966991411009, 22.96966991411009], [38.32322330470336, 23.32322330470336], [37.96966991411009, 23.46966991411009], [37.75, 24.0], [37.85355339059328, 24.25], [37.75, 24.5], [37.85355339059328, 24.75], [37.82322330470336, 24.82322330470336], [37.75, 24.853553390593273], [37.5, 24.75], [37.25, 24.853553390593273], [37.17677669529664, 24.82322330470336], [37.14644660940672, 24.75], [37.25, 24.5], [37.14644660940672, 24.25], [37.25, 24.0], [37.03033008588991, 23.46966991411009], [36.5, 23.25], [35.96966991411009, 23.46966991411009], [35.82322330470336, 23.82322330470336], [35.46966991411009, 23.96966991411009], [35.32322330470336, 24.32322330470336], [34.96966991411009, 24.46966991411009], [34.82322330470336, 24.82322330470336], [34.46966991411009, 24.96966991411009], [34.25, 25.5], [34.35355339059328, 25.75], [34.25, 26.0], [34.35355339059328, 26.25], [34.25, 26.5], [34.35355339059328, 26.75], [34.25, 27.0], [34.35355339059328, 27.25], [34.32322330470336, 27.32322330470336]]]}, "2020-12-23T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[34.35355339059328, 28.25], [34.25, 28.5], [34.46966991411009, 29.03033008588991], [35.0, 29.25], [35.53033008588991, 29.03033008588991], [35.75, 28.5], [35.64644660940672, 28.25], [35.67677669529664, 28.17677669529664], [35.75, 28.146446609406727], [36.0, 28.25], [36.25, 28.146446609406727], [36.5, 28.25], [37.03033008588991, 28.03033008588991], [37.17677669529664, 27.67677669529664], [37.53033008588991, 27.53033008588991], [37.75, 27.0], [37.64644660940672, 26.75], [37.75, 26.5], [37.64644660940672, 26.25], [37.67677669529664, 26.17677669529664], [37.75, 26.146446609406727], [38.0, 26.25], [38.25, 26.146446609406727], [38.32322330470336, 26.17677669529664], [38.46966991411009, 26.53033008588991], [39.0, 26.75], [39.25, 26.646446609406727], [39.5, 26.75], [40.03033008588991, 26.53033008588991], [40.25, 26.0], [40.14644660940672, 25.75], [40.25, 25.5], [40.125, 25.198223304703365], [40.25, 25.146446609406727], [40.5, 25.25], [41.03033008588991, 25.03033008588991], [41.25, 24.5], [41.03033008588991, 23.96966991411009], [40.67677669529664, 23.82322330470336], [40.53033008588991, 23.46966991411009], [40.0, 23.25], [39.75, 23.353553390593273], [39.67677669529664, 23.32322330470336], [39.53033008588991, 22.96966991411009], [39.0, 22.75], [38.46966991411009, 22.96966991411009], [38.32322330470336, 23.32322330470336], [37.96966991411009, 23.46966991411009], [37.75, 24.0], [37.85355339059328, 24.25], [37.75, 24.5], [37.85355339059328, 24.75], [37.82322330470336, 24.82322330470336], [37.75, 24.853553390593273], [37.5, 24.75], [37.25, 24.853553390593273], [37.0, 24.75], [36.46966991411009, 24.96966991411009], [36.32322330470336, 25.32322330470336], [36.25, 25.353553390593273], [36.0, 25.25], [35.46966991411009, 25.46966991411009], [35.32322330470336, 25.82322330470336], [34.96966991411009, 25.96966991411009], [34.75, 26.5], [34.85355339059328, 26.75], [34.75, 27.0], [34.85355339059328, 27.25], [34.82322330470336, 27.32322330470336], [34.46966991411009, 27.46966991411009], [34.25, 28.0], [34.35355339059328, 28.25]]]}, "2020-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.5, 23.75], [37.96966991411009, 23.96966991411009], [37.75, 24.5], [37.96966991411009, 25.03033008588991], [38.5, 25.25], [38.75, 25.146446609406727], [39.0, 25.25], [39.53033008588991, 25.03033008588991], [39.67677669529664, 24.67677669529664], [40.03033008588991, 24.53033008588991], [40.25, 24.0], [40.03033008588991, 23.46966991411009], [39.5, 23.25], [38.96966991411009, 23.46966991411009], [38.82322330470336, 23.82322330470336], [38.75, 23.853553390593273], [38.5, 23.75]]], [[[36.53033008588991, 26.46966991411009], [36.0, 26.25], [35.46966991411009, 26.46966991411009], [35.25, 27.0], [35.46966991411009, 27.53033008588991], [36.0, 27.75], [36.53033008588991, 27.53033008588991], [36.75, 27.0], [36.53033008588991, 26.46966991411009]]]]}, "2020-12-25T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[35.25, 27.0], [35.46966991411009, 27.53033008588991], [36.0, 27.75], [36.53033008588991, 27.53033008588991], [36.75, 27.0], [36.53033008588991, 26.46966991411009], [36.0, 26.25], [35.46966991411009, 26.46966991411009], [35.25, 27.0]]]}, "2020-12-26T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[35.25, 27.0], [35.46966991411009, 27.53033008588991], [36.0, 27.75], [36.53033008588991, 27.53033008588991], [36.75, 27.0], [36.53033008588991, 26.46966991411009], [36.0, 26.25], [35.46966991411009, 26.46966991411009], [35.25, 27.0]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.022360770628552}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.148222494652842}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.772160275290048, 24.06162214702664, 22.79643188296461, 23.10523321029291, 22.21730880017651, 21.663599871627696, 22.61832360673992, 22.876954525076712]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.645883628744684, 25.586528932762405, 25.390062515362615, 26.057715904035547, 25.82062648121064, 23.136848679261448, 22.61832360673992, 22.876954525076712]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.3808382780452018, 2.623919713703313, 3.005808217006603, 3.4195436433420037, 3.599765195728283, 3.165853477587902, 3.132251098239351, 3.407113167620139]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.2855205317009677, 3.6296766389891673, 3.9220420674110414, 5.022360770628552, 4.591549022209506, 3.659817488638396, 3.132251098239351, 3.407113167620139]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.52804901160828, 1.6234794771369554, 1.5819295850981296, 1.724965825231832, 1.6116926360831463, 1.3759742647607731, 1.7288204022921292, 1.8290953152981615]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7349392150406049, 1.8447582571191126, 2.0020373842902215, 2.2492657576892707, 2.0542586974982715, 1.568373677068342, 1.7288204022921292, 1.8290953152981615]}}