{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:22:00.753947", "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-12_to_2021-Jan-15_86.0_38.0"}, "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": 2021010001916}, "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 12 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 15 2021"}, "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": 56037.93553166971}, "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": ["China"]}, "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": 38.0}, "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": 86.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "86.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 82.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 89.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[83.25, 38.646], [83.5, 38.75], [83.75, 38.646], [84.0, 38.75], [84.25, 38.646], [84.5, 38.75], [85.03, 38.53], [85.177, 38.177], [85.25, 38.146], [85.323, 38.177], [85.47, 38.53], [86.0, 38.75], [86.25, 38.646], [86.323, 38.677], [86.47, 39.03], [87.0, 39.25], [87.25, 39.146], [87.5, 39.25], [87.75, 39.146], [87.823, 39.177], [87.97, 39.53], [88.5, 39.75], [88.75, 39.646], [89.0, 39.75], [89.53, 39.53], [89.75, 39.0], [89.53, 38.47], [89.177, 38.323], [89.146, 38.25], [89.25, 38.0], [89.03, 37.47], [88.5, 37.25], [88.0, 37.457], [87.5, 37.25], [87.25, 37.354], [87.0, 37.25], [86.75, 37.354], [86.5, 37.25], [86.25, 37.354], [86.177, 37.323], [86.03, 36.97], [85.5, 36.75], [85.25, 36.854], [85.0, 36.75], [84.75, 36.854], [84.677, 36.823], [84.53, 36.47], [84.0, 36.25], [83.47, 36.47], [83.323, 36.823], [83.25, 36.854], [83.0, 36.75], [82.75, 36.854], [82.5, 36.75], [81.97, 36.97], [81.75, 37.5], [81.97, 38.03], [82.323, 38.177], [82.47, 38.53], [83.0, 38.75], [83.25, 38.646]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.C.Asia", "Tibetan-Plateau"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-01-12T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[85.25, 38.0], [85.46966991411009, 38.53033008588991], [86.0, 38.75], [86.53033008588991, 38.53033008588991], [86.75, 38.0], [86.53033008588991, 37.46966991411009], [86.0, 37.25], [85.46966991411009, 37.46966991411009], [85.25, 38.0]]]}, "2021-01-13T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[82.32322330470336, 38.17677669529664], [82.46966991411009, 38.53033008588991], [83.0, 38.75], [83.25, 38.64644660940672], [83.5, 38.75], [83.75, 38.64644660940672], [84.0, 38.75], [84.25, 38.64644660940672], [84.5, 38.75], [85.03033008588991, 38.53033008588991], [85.17677669529664, 38.17677669529664], [85.25, 38.14644660940672], [85.32322330470336, 38.17677669529664], [85.46966991411009, 38.53033008588991], [86.0, 38.75], [86.25, 38.64644660940672], [86.32322330470336, 38.67677669529664], [86.46966991411009, 39.03033008588991], [87.0, 39.25], [87.25, 39.14644660940672], [87.5, 39.25], [87.75, 39.14644660940672], [87.82322330470336, 39.17677669529664], [87.96966991411009, 39.53033008588991], [88.5, 39.75], [88.75, 39.64644660940672], [89.0, 39.75], [89.53033008588991, 39.53033008588991], [89.75, 39.0], [89.53033008588991, 38.46966991411009], [89.17677669529664, 38.32322330470336], [89.14644660940672, 38.25], [89.25, 38.0], [89.03033008588991, 37.46966991411009], [88.5, 37.25], [88.0, 37.457106781186546], [87.5, 37.25], [87.25, 37.35355339059328], [87.0, 37.25], [86.75, 37.35355339059328], [86.5, 37.25], [86.25, 37.35355339059328], [86.17677669529664, 37.32322330470336], [86.03033008588991, 36.96966991411009], [85.5, 36.75], [85.25, 36.85355339059328], [85.0, 36.75], [84.75, 36.85355339059328], [84.67677669529664, 36.82322330470336], [84.53033008588991, 36.46966991411009], [84.0, 36.25], [83.46966991411009, 36.46966991411009], [83.32322330470336, 36.82322330470336], [83.25, 36.85355339059328], [83.0, 36.75], [82.75, 36.85355339059328], [82.5, 36.75], [81.96966991411009, 36.96966991411009], [81.75, 37.5], [81.96966991411009, 38.03033008588991], [82.32322330470336, 38.17677669529664]]]}, "2021-01-14T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[82.32322330470336, 38.17677669529664], [82.46966991411009, 38.53033008588991], [83.0, 38.75], [83.25, 38.64644660940672], [83.5, 38.75], [83.75, 38.64644660940672], [84.0, 38.75], [84.25, 38.64644660940672], [84.5, 38.75], [85.03033008588991, 38.53033008588991], [85.17677669529664, 38.17677669529664], [85.25, 38.14644660940672], [85.32322330470336, 38.17677669529664], [85.46966991411009, 38.53033008588991], [86.0, 38.75], [86.25, 38.64644660940672], [86.32322330470336, 38.67677669529664], [86.46966991411009, 39.03033008588991], [87.0, 39.25], [87.25, 39.14644660940672], [87.5, 39.25], [87.75, 39.14644660940672], [87.82322330470336, 39.17677669529664], [87.96966991411009, 39.53033008588991], [88.5, 39.75], [88.75, 39.64644660940672], [89.0, 39.75], [89.53033008588991, 39.53033008588991], [89.75, 39.0], [89.53033008588991, 38.46966991411009], [89.17677669529664, 38.32322330470336], [89.14644660940672, 38.25], [89.25, 38.0], [89.03033008588991, 37.46966991411009], [88.5, 37.25], [88.0, 37.457106781186546], [87.5, 37.25], [87.25, 37.35355339059328], [87.0, 37.25], [86.75, 37.35355339059328], [86.5, 37.25], [86.25, 37.35355339059328], [86.17677669529664, 37.32322330470336], [86.03033008588991, 36.96966991411009], [85.5, 36.75], [85.25, 36.85355339059328], [85.0, 36.75], [84.75, 36.85355339059328], [84.67677669529664, 36.82322330470336], [84.53033008588991, 36.46966991411009], [84.0, 36.25], [83.46966991411009, 36.46966991411009], [83.32322330470336, 36.82322330470336], [83.25, 36.85355339059328], [83.0, 36.75], [82.75, 36.85355339059328], [82.5, 36.75], [81.96966991411009, 36.96966991411009], [81.75, 37.5], [81.96966991411009, 38.03033008588991], [82.32322330470336, 38.17677669529664]]]}, "2021-01-15T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[82.32322330470336, 38.17677669529664], [82.46966991411009, 38.53033008588991], [83.0, 38.75], [83.25, 38.64644660940672], [83.5, 38.75], [83.75, 38.64644660940672], [84.0, 38.75], [84.25, 38.64644660940672], [84.5, 38.75], [85.03033008588991, 38.53033008588991], [85.17677669529664, 38.17677669529664], [85.25, 38.14644660940672], [85.5, 38.25], [85.80177669529664, 38.125], [85.96966991411009, 38.53033008588991], [86.32322330470336, 38.67677669529664], [86.46966991411009, 39.03033008588991], [87.0, 39.25], [87.25, 39.14644660940672], [87.5, 39.25], [87.75, 39.14644660940672], [87.82322330470336, 39.17677669529664], [87.96966991411009, 39.53033008588991], [88.5, 39.75], [88.75, 39.64644660940672], [89.0, 39.75], [89.53033008588991, 39.53033008588991], [89.75, 39.0], [89.53033008588991, 38.46966991411009], [89.17677669529664, 38.32322330470336], [89.14644660940672, 38.25], [89.25, 38.0], [89.03033008588991, 37.46966991411009], [88.5, 37.25], [88.0, 37.457106781186546], [87.5, 37.25], [87.25, 37.35355339059328], [87.0, 37.25], [86.75, 37.35355339059328], [86.5, 37.25], [86.19822330470336, 37.375], [86.03033008588991, 36.96966991411009], [85.5, 36.75], [85.25, 36.85355339059328], [85.0, 36.75], [84.75, 36.85355339059328], [84.67677669529664, 36.82322330470336], [84.53033008588991, 36.46966991411009], [84.0, 36.25], [83.46966991411009, 36.46966991411009], [83.32322330470336, 36.82322330470336], [83.25, 36.85355339059328], [83.0, 36.75], [82.75, 36.85355339059328], [82.5, 36.75], [81.96966991411009, 36.96966991411009], [81.75, 37.5], [81.96966991411009, 38.03033008588991], [82.32322330470336, 38.17677669529664]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 11.857259238960921}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.3898763859987255}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-2.939399090574568, -2.7100926655223816, 0.1463463442031525, -4.641876510760596]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.939399090574568, 2.6759847107192627, 5.3248156033176315, -1.480356254789342]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.307397617320589, 6.096831495762498, 8.91413420734812, 4.151902811138513]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.307397617320589, 9.940472833269553, 11.857259238960921, 5.889095295571849]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3979841132275042, 2.136386017674888, 3.2099568069021402, 1.4655713006471378]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3979841132275042, 3.218600821796686, 4.315187255753915, 1.918328420411045]}}