{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:21:48.709367", "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-16_to_2021-Jan-18_116.0_5.5"}, "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": 2021010000659}, "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 16 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 18 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 61640.402906609015}, "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": ["Brunei Darussalam", "Indonesia", "Malaysia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Asia", "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": ["South China 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": 5.5}, "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": 116.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "116.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 114.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 116.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 3.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[113.25, 4.0], [113.47, 4.53], [113.823, 4.677], [113.97, 5.03], [114.323, 5.177], [114.47, 5.53], [114.823, 5.677], [114.97, 6.03], [115.323, 6.177], [115.47, 6.53], [116.0, 6.75], [116.53, 6.53], [116.75, 6.0], [116.646, 5.75], [116.677, 5.677], [117.03, 5.53], [117.25, 5.0], [117.03, 4.47], [116.5, 4.25], [116.25, 4.354], [116.177, 4.323], [116.146, 4.25], [116.25, 4.0], [116.146, 3.75], [116.25, 3.5], [116.146, 3.25], [116.25, 3.0], [116.03, 2.47], [115.5, 2.25], [115.25, 2.354], [115.0, 2.25], [114.75, 2.354], [114.5, 2.25], [113.97, 2.47], [113.75, 3.0], [113.854, 3.25], [113.823, 3.323], [113.47, 3.47], [113.25, 4.0]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-01-16T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[113.82322330470336, 3.323223304703363], [113.46966991411009, 3.4696699141100895], [113.25, 4.0], [113.46966991411009, 4.5303300858899105], [113.82322330470336, 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[113.82322330470336, 3.323223304703363]]]}, "2021-01-17T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[113.82322330470336, 3.323223304703363], [113.46966991411009, 3.4696699141100895], [113.25, 4.0], [113.46966991411009, 4.5303300858899105], [113.82322330470336, 4.6767766952966365], [113.96966991411009, 5.0303300858899105], [114.32322330470336, 5.1767766952966365], [114.46966991411009, 5.5303300858899105], [114.82322330470336, 5.6767766952966365], [114.96966991411009, 6.0303300858899105], [115.32322330470336, 6.1767766952966365], [115.46966991411009, 6.5303300858899105], [116.0, 6.75], [116.53033008588991, 6.5303300858899105], [116.75, 6.0], [116.64644660940672, 5.75], [116.67677669529664, 5.6767766952966365], [117.03033008588991, 5.5303300858899105], [117.25, 5.0], [117.03033008588991, 4.4696699141100895], [116.5, 4.25], [116.25, 4.353553390593273], [116.17677669529664, 4.3232233047033635], [116.14644660940672, 4.25], [116.25, 4.0], [116.14644660940672, 3.75], [116.25, 3.5], [116.14644660940672, 3.25], [116.25, 3.0], [116.03033008588991, 2.4696699141100895], [115.5, 2.25], [115.25, 2.353553390593273], [115.0, 2.25], [114.75, 2.353553390593273], [114.5, 2.25], [113.96966991411009, 2.4696699141100895], [113.75, 3.0], [113.85355339059328, 3.25], [113.82322330470336, 3.323223304703363]]]}, "2021-01-18T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[113.82322330470336, 3.323223304703363], [113.46966991411009, 3.4696699141100895], [113.25, 4.0], [113.46966991411009, 4.5303300858899105], [113.82322330470336, 4.6767766952966365], [113.96966991411009, 5.0303300858899105], [114.32322330470336, 5.1767766952966365], [114.46966991411009, 5.5303300858899105], [114.82322330470336, 5.6767766952966365], [114.96966991411009, 6.0303300858899105], [115.32322330470336, 6.1767766952966365], [115.46966991411009, 6.5303300858899105], [116.0, 6.75], [116.53033008588991, 6.5303300858899105], [116.75, 6.0], [116.64644660940672, 5.75], [116.67677669529664, 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"value": [22.598377127770163, 21.969218690390335, 22.64611804479341]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.99526144738678, 18.13434837885029, 18.845315932530923]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5372363747079532, -2.1504606193112124, -1.4749377102467123]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8973150212115684, -3.461822303794577, -1.8177724157860666]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8040255411092887, -2.5127736197382307, -1.7364990058304013]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1279531198323283, -3.5853216871507483, -2.0504368360219907]}}