{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:11:09.866427", "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-Jan-12_to_2020-Jan-15_98.0_34.5"}, "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": 2020010001800}, "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 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 15 2020"}, "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": 52698.81699943311}, "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": 34.5}, "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": 98.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "98.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 96.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 100.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 37.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[95.25, 35.0], [95.47, 35.53], [96.0, 35.75], [96.25, 35.646], [96.5, 35.75], [96.75, 35.646], [96.751, 35.646], [96.823, 35.677], [96.957, 36.0], [96.75, 36.5], [96.97, 37.03], [97.5, 37.25], [97.75, 37.146], [98.0, 37.25], [98.25, 37.146], [98.5, 37.25], [98.75, 37.146], [98.774, 37.156], [98.823, 37.177], [98.97, 37.53], [99.323, 37.677], [99.47, 38.03], [100.0, 38.25], [100.53, 38.03], [100.75, 37.5], [100.625, 37.198], [101.03, 37.03], [101.25, 36.5], [101.03, 35.97], [100.5, 35.75], [100.25, 35.854], [100.0, 35.75], [99.5, 35.957], [99.177, 35.823], [99.043, 35.5], [99.177, 35.177], [99.53, 35.03], [99.75, 34.5], [99.53, 33.97], [99.0, 33.75], [98.75, 33.854], [98.5, 33.75], [98.25, 33.854], [98.0, 33.75], [97.47, 33.97], [97.323, 34.323], [97.25, 34.354], [97.0, 34.25], [96.75, 34.354], [96.5, 34.25], [96.25, 34.354], [96.0, 34.25], [95.47, 34.47], [95.25, 35.0]]]}}, "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": {"2020-01-12T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[96.25, 34.35355339059328], [96.0, 34.25], [95.46966991411009, 34.46966991411009], [95.25, 35.0], [95.46966991411009, 35.53033008588991], [96.0, 35.75], [96.25, 35.64644660940672], [96.5, 35.75], [96.80177669529664, 35.625], [96.96966991411009, 36.03033008588991], [97.5, 36.25], [97.75, 36.14644660940672], [97.82322330470336, 36.17677669529664], [97.96966991411009, 36.53033008588991], [98.32322330470336, 36.67677669529664], [98.46966991411009, 37.03033008588991], [99.0, 37.25], [99.53033008588991, 37.03033008588991], [99.75, 36.5], [99.53033008588991, 35.96966991411009], [99.17677669529664, 35.82322330470336], [99.03033008588991, 35.46966991411009], [98.67677669529664, 35.32322330470336], [98.625, 35.19822330470336], [99.03033008588991, 35.03033008588991], [99.25, 34.5], [99.03033008588991, 33.96966991411009], [98.5, 33.75], [98.25, 33.85355339059328], [98.0, 33.75], [97.46966991411009, 33.96966991411009], [97.25, 34.5], [97.375, 34.80177669529664], [97.19822330470336, 34.875], [97.03033008588991, 34.46966991411009], [96.5, 34.25], [96.25, 34.35355339059328]]]}, "2020-01-13T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[96.25, 34.35355339059328], [96.0, 34.25], [95.46966991411009, 34.46966991411009], [95.25, 35.0], [95.46966991411009, 35.53033008588991], [96.0, 35.75], [96.25, 35.64644660940672], [96.5, 35.75], [96.75, 35.64644660940672], [96.82322330470336, 35.67677669529664], [96.95710678118654, 36.0], [96.75, 36.5], [96.96966991411009, 37.03033008588991], [97.5, 37.25], [97.75, 37.14644660940672], [98.0, 37.25], [98.25, 37.14644660940672], [98.5, 37.25], [98.75, 37.14644660940672], [98.82322330470336, 37.17677669529664], [98.96966991411009, 37.53033008588991], [99.32322330470336, 37.67677669529664], [99.46966991411009, 38.03033008588991], [100.0, 38.25], [100.53033008588991, 38.03033008588991], [100.75, 37.5], [100.625, 37.19822330470336], [101.03033008588991, 37.03033008588991], [101.25, 36.5], [101.03033008588991, 35.96966991411009], [100.5, 35.75], [100.25, 35.85355339059328], [100.0, 35.75], [99.5, 35.957106781186546], [99.17677669529664, 35.82322330470336], [99.04289321881346, 35.5], [99.17677669529664, 35.17677669529664], [99.53033008588991, 35.03033008588991], [99.75, 34.5], [99.53033008588991, 33.96966991411009], [99.0, 33.75], [98.75, 33.85355339059328], [98.5, 33.75], [98.25, 33.85355339059328], [98.0, 33.75], [97.46966991411009, 33.96966991411009], [97.32322330470336, 34.32322330470336], [97.25, 34.35355339059328], [97.0, 34.25], [96.75, 34.35355339059328], [96.5, 34.25], [96.25, 34.35355339059328]]]}, "2020-01-14T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[96.25, 34.35355339059328], [96.0, 34.25], [95.46966991411009, 34.46966991411009], [95.25, 35.0], [95.46966991411009, 35.53033008588991], [96.0, 35.75], [96.25, 35.64644660940672], [96.5, 35.75], [96.75, 35.64644660940672], [96.82322330470336, 35.67677669529664], [96.95710678118654, 36.0], [96.75, 36.5], [96.96966991411009, 37.03033008588991], [97.5, 37.25], [97.75, 37.14644660940672], [98.0, 37.25], [98.25, 37.14644660940672], [98.5, 37.25], [98.75, 37.14644660940672], [98.82322330470336, 37.17677669529664], [98.96966991411009, 37.53033008588991], [99.32322330470336, 37.67677669529664], [99.46966991411009, 38.03033008588991], [100.0, 38.25], [100.53033008588991, 38.03033008588991], [100.75, 37.5], [100.625, 37.19822330470336], [101.03033008588991, 37.03033008588991], [101.25, 36.5], [101.03033008588991, 35.96966991411009], [100.5, 35.75], [100.25, 35.85355339059328], [100.0, 35.75], [99.5, 35.957106781186546], [99.17677669529664, 35.82322330470336], [99.04289321881346, 35.5], [99.17677669529664, 35.17677669529664], [99.53033008588991, 35.03033008588991], [99.75, 34.5], [99.53033008588991, 33.96966991411009], [99.0, 33.75], [98.75, 33.85355339059328], [98.5, 33.75], [98.25, 33.85355339059328], [98.0, 33.75], [97.46966991411009, 33.96966991411009], [97.32322330470336, 34.32322330470336], [97.25, 34.35355339059328], [97.0, 34.25], [96.75, 34.35355339059328], [96.5, 34.25], [96.25, 34.35355339059328]]]}, "2020-01-15T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[96.75, 34.35355339059328], [96.5, 34.25], [95.96966991411009, 34.46966991411009], [95.75, 35.0], [95.96966991411009, 35.53033008588991], [96.5, 35.75], [96.75, 35.64644660940672], [96.82322330470336, 35.67677669529664], [96.95710678118654, 36.0], [96.75, 36.5], [96.96966991411009, 37.03033008588991], [97.5, 37.25], [97.75, 37.14644660940672], [98.0, 37.25], [98.25, 37.14644660940672], [98.5, 37.25], [98.75, 37.14644660940672], [98.82322330470336, 37.17677669529664], [98.96966991411009, 37.53033008588991], [99.32322330470336, 37.67677669529664], [99.46966991411009, 38.03033008588991], [100.0, 38.25], [100.53033008588991, 38.03033008588991], [100.75, 37.5], [100.625, 37.19822330470336], [101.03033008588991, 37.03033008588991], [101.25, 36.5], [101.03033008588991, 35.96966991411009], [100.5, 35.75], [100.25, 35.85355339059328], [100.0, 35.75], [99.5, 35.957106781186546], [99.0, 35.75], [98.75, 35.85355339059328], [98.67677669529664, 35.82322330470336], [98.625, 35.69822330470336], [99.03033008588991, 35.53033008588991], [99.17677669529664, 35.17677669529664], [99.53033008588991, 35.03033008588991], [99.75, 34.5], [99.53033008588991, 33.96966991411009], [99.0, 33.75], [98.75, 33.85355339059328], [98.5, 33.75], [98.25, 33.85355339059328], [98.0, 33.75], [97.46966991411009, 33.96966991411009], [97.32322330470336, 34.32322330470336], [97.25, 34.35355339059328], [97.0, 34.25], [96.75, 34.35355339059328]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.929979405026472}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.056897609000652}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-12.70997997679791, -9.785878761433025, -8.25272850273194, -9.601900403191166]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-10.360853462140994, -3.6344769468379354, -1.0574515087940313, -3.675360299341321]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.188924759418654, 5.951973937135855, 7.262144530180909, 5.158952862391279]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.75950846871504, 8.64271461799865, 9.929979405026472, 6.592397585310664]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.451495236680475, 1.800414088407972, 2.159406343305526, 1.5390719304029203]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6862961246884176, 2.376845690402213, 2.7389335593473847, 1.8547131561102659]}}