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{"target":"http://pubannotation.org/docs/sourcedb/PMC/sourceid/7210464","sourcedb":"PMC","sourceid":"7210464","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7210464","text":"We rely on meteorological data to construct instrumental variables for the endogenous variables. The National Oceanic and Atmospheric Administration (NOAA) provides average, maximum, and minimum temperatures, air pressure, average and maximum wind speeds, precipitation, snowfall amount, and dew point for 362 weather stations at the daily level in China. To merge the meteorological variables with the number of new cases of COVID-19, we first calculate daily weather variables for each city on each day from 2019 December to 2020 February from station-level weather records following the inverse distance weighting method. Specifically, for each city, we draw a circle of 100 km from the city’s centroid and calculate the weighted average daily weather variables using stations within the 100-km circle12. We use the inverse of the distance between the city’s centroid and each station as the weight. Second, we match the daily weather variables to the number of new cases of COVID-19 based on city name and date.","tracks":[{"project":"LitCovid-PD-MONDO","denotations":[{"id":"T66","span":{"begin":426,"end":434},"obj":"Disease"},{"id":"T67","span":{"begin":978,"end":986},"obj":"Disease"}],"attributes":[{"id":"A66","pred":"mondo_id","subj":"T66","obj":"http://purl.obolibrary.org/obo/MONDO_0100096"},{"id":"A67","pred":"mondo_id","subj":"T67","obj":"http://purl.obolibrary.org/obo/MONDO_0100096"},{"subj":"T66","pred":"source","obj":"LitCovid-PD-MONDO"},{"subj":"T67","pred":"source","obj":"LitCovid-PD-MONDO"}]},{"project":"LitCovid-PD-CLO","denotations":[{"id":"T95","span":{"begin":44,"end":56},"obj":"http://purl.obolibrary.org/obo/OBI_0000968"},{"id":"T96","span":{"begin":662,"end":663},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"attributes":[{"subj":"T95","pred":"source","obj":"LitCovid-PD-CLO"},{"subj":"T96","pred":"source","obj":"LitCovid-PD-CLO"}]},{"project":"LitCovid-sentences","denotations":[{"id":"T174","span":{"begin":0,"end":96},"obj":"Sentence"},{"id":"T175","span":{"begin":97,"end":355},"obj":"Sentence"},{"id":"T176","span":{"begin":356,"end":624},"obj":"Sentence"},{"id":"T177","span":{"begin":625,"end":807},"obj":"Sentence"},{"id":"T178","span":{"begin":808,"end":902},"obj":"Sentence"},{"id":"T179","span":{"begin":903,"end":1015},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"attributes":[{"subj":"T174","pred":"source","obj":"LitCovid-sentences"},{"subj":"T175","pred":"source","obj":"LitCovid-sentences"},{"subj":"T176","pred":"source","obj":"LitCovid-sentences"},{"subj":"T177","pred":"source","obj":"LitCovid-sentences"},{"subj":"T178","pred":"source","obj":"LitCovid-sentences"},{"subj":"T179","pred":"source","obj":"LitCovid-sentences"}]},{"project":"LitCovid-PubTator","denotations":[{"id":"174","span":{"begin":426,"end":434},"obj":"Disease"},{"id":"175","span":{"begin":978,"end":986},"obj":"Disease"}],"attributes":[{"id":"A174","pred":"tao:has_database_id","subj":"174","obj":"MESH:C000657245"},{"id":"A175","pred":"tao:has_database_id","subj":"175","obj":"MESH:C000657245"},{"subj":"174","pred":"source","obj":"LitCovid-PubTator"},{"subj":"175","pred":"source","obj":"LitCovid-PubTator"}],"namespaces":[{"prefix":"Tax","uri":"https://www.ncbi.nlm.nih.gov/taxonomy/"},{"prefix":"MESH","uri":"https://id.nlm.nih.gov/mesh/"},{"prefix":"Gene","uri":"https://www.ncbi.nlm.nih.gov/gene/"},{"prefix":"CVCL","uri":"https://web.expasy.org/cellosaurus/CVCL_"}]}],"config":{"attribute types":[{"pred":"source","value type":"selection","values":[{"id":"LitCovid-PD-MONDO","color":"#ec93b0","default":true},{"id":"LitCovid-PD-CLO","color":"#93caec"},{"id":"LitCovid-sentences","color":"#e4ec93"},{"id":"LitCovid-PubTator","color":"#d993ec"}]}]}}