{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:19:07.080092", "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-Oct-22_to_2020-Oct-27_99.0_39.0"}, "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": 2020100002369}, "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": "October 22 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 27 2020"}, "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": 82564.0179444284}, "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": 39.0}, "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": 99.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "99.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 95.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 100.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.5}, "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": [[[95.47, 39.53], [96.0, 39.75], [96.25, 39.646], [96.5, 39.75], [96.75, 39.646], [97.0, 39.75], [97.25, 39.646], [97.5, 39.75], [97.75, 39.646], [98.0, 39.75], [98.25, 39.646], [98.5, 39.75], [98.75, 39.646], [99.0, 39.75], [99.53, 39.53], [99.677, 39.177], [100.03, 39.03], [100.177, 38.677], [100.53, 38.53], [100.75, 38.0], [100.646, 37.75], [100.75, 37.5], [100.53, 36.97], [100.0, 36.75], [99.75, 36.854], [99.5, 36.75], [99.25, 36.854], [99.0, 36.75], [98.75, 36.854], [98.5, 36.75], [98.25, 36.854], [98.0, 36.75], [97.75, 36.854], [97.5, 36.75], [97.25, 36.854], [97.0, 36.75], [96.75, 36.854], [96.5, 36.75], [95.97, 36.97], [95.823, 37.323], [95.75, 37.354], [95.5, 37.25], [94.97, 37.47], [94.75, 38.0], [94.854, 38.25], [94.75, 38.5], [94.97, 39.03], [95.323, 39.177], [95.47, 39.53]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.C.Asia", "Tibetan-Plateau", "E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-10-22T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[98.25, 39.0], [98.46966991411009, 39.53033008588991], [99.0, 39.75], [99.53033008588991, 39.53033008588991], [99.75, 39.0], [99.53033008588991, 38.46966991411009], [99.0, 38.25], [98.46966991411009, 38.46966991411009], [98.25, 39.0]]]}, "2020-10-23T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[96.35355339059328, 38.75], [96.25, 39.0], [96.46966991411009, 39.53033008588991], [97.0, 39.75], [97.25, 39.64644660940672], [97.5, 39.75], [97.75, 39.64644660940672], [98.0, 39.75], [98.25, 39.64644660940672], [98.5, 39.75], [98.75, 39.64644660940672], [99.0, 39.75], [99.53033008588991, 39.53033008588991], [99.67677669529664, 39.17677669529664], [100.03033008588991, 39.03033008588991], [100.17677669529664, 38.67677669529664], [100.53033008588991, 38.53033008588991], [100.75, 38.0], [100.53033008588991, 37.46966991411009], [100.0, 37.25], [99.75, 37.35355339059328], [99.5, 37.25], [99.0, 37.457106781186546], [98.5, 37.25], [98.25, 37.35355339059328], [98.0, 37.25], [97.46966991411009, 37.46966991411009], [97.32322330470336, 37.82322330470336], [97.25, 37.85355339059328], [97.0, 37.75], [96.46966991411009, 37.96966991411009], [96.25, 38.5], [96.35355339059328, 38.75]]]}, "2020-10-24T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[94.85355339059328, 38.25], [94.75, 38.5], [94.96966991411009, 39.03033008588991], [95.32322330470336, 39.17677669529664], [95.46966991411009, 39.53033008588991], [96.0, 39.75], [96.25, 39.64644660940672], [96.5, 39.75], [96.75, 39.64644660940672], [97.0, 39.75], [97.25, 39.64644660940672], [97.5, 39.75], [97.75, 39.64644660940672], [98.0, 39.75], [98.25, 39.64644660940672], [98.5, 39.75], [98.75, 39.64644660940672], [99.0, 39.75], [99.53033008588991, 39.53033008588991], [99.67677669529664, 39.17677669529664], [100.03033008588991, 39.03033008588991], [100.17677669529664, 38.67677669529664], [100.53033008588991, 38.53033008588991], [100.75, 38.0], [100.64644660940672, 37.75], [100.75, 37.5], [100.53033008588991, 36.96966991411009], [100.0, 36.75], [99.75, 36.85355339059328], [99.5, 36.75], [99.25, 36.85355339059328], [99.0, 36.75], [98.75, 36.85355339059328], [98.5, 36.75], [98.25, 36.85355339059328], [98.0, 36.75], [97.75, 36.85355339059328], [97.5, 36.75], [97.25, 36.85355339059328], [97.0, 36.75], [96.75, 36.85355339059328], [96.5, 36.75], [95.96966991411009, 36.96966991411009], [95.82322330470336, 37.32322330470336], [95.75, 37.35355339059328], [95.5, 37.25], [94.96966991411009, 37.46966991411009], [94.75, 38.0], [94.85355339059328, 38.25]]]}, "2020-10-25T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[94.85355339059328, 38.25], [94.75, 38.5], [94.96966991411009, 39.03033008588991], [95.32322330470336, 39.17677669529664], [95.46966991411009, 39.53033008588991], [96.0, 39.75], [96.25, 39.64644660940672], [96.5, 39.75], [96.75, 39.64644660940672], [97.0, 39.75], [97.25, 39.64644660940672], [97.5, 39.75], [97.75, 39.64644660940672], [98.0, 39.75], [98.25, 39.64644660940672], [98.5, 39.75], [98.75, 39.64644660940672], [99.0, 39.75], [99.53033008588991, 39.53033008588991], [99.67677669529664, 39.17677669529664], [100.03033008588991, 39.03033008588991], [100.17677669529664, 38.67677669529664], [100.53033008588991, 38.53033008588991], [100.75, 38.0], [100.64644660940672, 37.75], [100.75, 37.5], [100.53033008588991, 36.96966991411009], [100.0, 36.75], [99.75, 36.85355339059328], [99.5, 36.75], [99.25, 36.85355339059328], [99.0, 36.75], [98.75, 36.85355339059328], [98.5, 36.75], [98.25, 36.85355339059328], [98.0, 36.75], [97.75, 36.85355339059328], [97.5, 36.75], [97.25, 36.85355339059328], [97.0, 36.75], [96.75, 36.85355339059328], [96.5, 36.75], [95.96966991411009, 36.96966991411009], [95.82322330470336, 37.32322330470336], [95.75, 37.35355339059328], [95.5, 37.25], [94.96966991411009, 37.46966991411009], [94.75, 38.0], [94.85355339059328, 38.25]]]}, "2020-10-26T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[94.85355339059328, 38.25], [94.75, 38.5], [94.96966991411009, 39.03033008588991], [95.32322330470336, 39.17677669529664], [95.46966991411009, 39.53033008588991], [96.0, 39.75], [96.25, 39.64644660940672], [96.5, 39.75], [96.75, 39.64644660940672], [97.0, 39.75], [97.25, 39.64644660940672], [97.5, 39.75], [97.75, 39.64644660940672], [98.0, 39.75], [98.25, 39.64644660940672], [98.5, 39.75], [98.75, 39.64644660940672], [99.0, 39.75], [99.53033008588991, 39.53033008588991], [99.67677669529664, 39.17677669529664], [100.03033008588991, 39.03033008588991], [100.17677669529664, 38.67677669529664], [100.53033008588991, 38.53033008588991], [100.75, 38.0], [100.64644660940672, 37.75], [100.75, 37.5], [100.53033008588991, 36.96966991411009], [100.0, 36.75], [99.75, 36.85355339059328], [99.5, 36.75], [99.25, 36.85355339059328], [99.0, 36.75], [98.75, 36.85355339059328], [98.5, 36.75], [98.25, 36.85355339059328], [98.0, 36.75], [97.75, 36.85355339059328], [97.5, 36.75], [97.25, 36.85355339059328], [97.0, 36.75], [96.75, 36.85355339059328], [96.5, 36.75], [95.96966991411009, 36.96966991411009], [95.82322330470336, 37.32322330470336], [95.75, 37.35355339059328], [95.5, 37.25], [94.96966991411009, 37.46966991411009], [94.75, 38.0], [94.85355339059328, 38.25]]]}, "2020-10-27T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[97.25, 37.35355339059328], [97.0, 37.25], [96.46966991411009, 37.46966991411009], [96.25, 38.0], [96.46966991411009, 38.53033008588991], [97.0, 38.75], [97.25, 38.64644660940672], [97.5, 38.75], [97.75, 38.64644660940672], [98.0, 38.75], [98.53033008588991, 38.53033008588991], [98.75, 38.0], [98.53033008588991, 37.46966991411009], [98.0, 37.25], [97.75, 37.35355339059328], [97.5, 37.25], [97.25, 37.35355339059328]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.4374665508318}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.195304797176774}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-5.187811452094195, -4.661501958452561, -1.968537764209941, -3.878280702241966, -3.751973102539239, -8.728560335611803]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-5.187811452094195, -2.568054953350952, 3.616080396228824, 0.6081584587212205, 1.6126481975281877, -8.547229153471847]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.300142102892551, 5.606030916285541, 7.327431646861241, 5.642750916870035, 6.066407529369345, 4.33240381526421]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.300142102892551, 7.416447975505946, 9.4374665508318, 8.552531508073969, 9.228268229500657, 4.712886661997004]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.536674443898058, 1.603631020426925, 2.330879040752312, 1.793760034358175, 1.9495916611571418, 1.1831664013698984]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.536674443898058, 1.9452539815749499, 2.7117505302262512, 2.2533283719555754, 2.5214696322782224, 1.256380849880946]}}