{ "_id": "6a30fb843efcd9bda434e7e6", "Package": "humidity", "Type": "Package", "Title": "Calculate Water Vapor Measures from Temperature and Dew Point", "Version": "0.1.6", "Date": "2026-05-17", "Authors@R": "c(\nperson(\"Jun\", \"Cai\", role = c(\"aut\", \"cre\"),\nemail = \"caijun@fudan.edu.cn\", comment = c(ORCID = \"0000-0001-9495-1226\"))\n)", "Maintainer": "Jun Cai ", "Description": "Vapor pressure, relative humidity, absolute humidity,\nspecific humidity, and mixing ratio are commonly used water\nvapor measures in meteorology. This R package provides\nfunctions for calculating saturation vapor pressure (hPa),\npartial water vapor pressure (Pa), relative humidity (%),\nabsolute humidity (kg/m^3), specific humidity (kg/kg), and\nmixing ratio (kg/kg) from temperature (K) and dew point (K).\nConversion functions between humidity measures are also\nprovided.", "License": "GPL-3", "URL": "https://github.com/caijun/humidity", "BugReports": "https://github.com/caijun/humidity/issues", "Encoding": "UTF-8", "LazyData": "true", "VignetteBuilder": "knitr", "Config/roxygen2/version": "8.0.0", "Repository": "https://caijun.r-universe.dev", "Date/Publication": "2026-05-17 14:18:05 UTC", "RemoteUrl": "https://github.com/caijun/humidity", "RemoteRef": "HEAD", "RemoteSha": "2d8b66beccc2fd308f3f903489fb0b24d6b5b1f8", "NeedsCompilation": "no", "Packaged": { "Date": "2026-06-16 07:22:47 UTC", "User": "root" }, "Author": "Jun Cai [aut, cre] (ORCID: )", "MD5sum": "ba409d45f7e4c80b0326d71fe25ca669", "_user": "caijun", "_type": 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"Suggests" }, { "package": "knitr", "role": "Suggests" }, { "package": "bookdown", "role": "Suggests" } ], "_owner": "caijun", "_selfowned": true, "_usedby": 0, "_updates": [ { "week": "2026-20", "n": 3 } ], "_tags": [], "_stars": 4, "_contributors": [ { "user": "caijun", "count": 42, "uuid": 2522593 } ], "_userbio": { "uuid": 2522593, "type": "user", "name": "Jun Cai", "followers": 129, "description": "\r\nYoung Research Fellow interested in infectious disease epidemiology with a focus on COVID-19 and influenza\r\n" }, "_downloads": { "count": 591, "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/humidity" }, "_devurl": "https://github.com/caijun/humidity", "_searchresults": 88, "_rbuild": "4.6.0", "_assets": [ "extra/citation.cff", "extra/citation.html", "extra/citation.json", "extra/citation.txt", "extra/contents.json", "extra/humidity.html", "extra/NEWS.html", "extra/NEWS.txt", "extra/readme.html", "extra/readme.md", "manual.pdf" ], "_homeurl": "https://github.com/caijun/humidity", "_realowner": "caijun", "_cranurl": true, "_releases": [ { "version": "0.1.0", "date": "2016-07-22" }, { "version": "0.1.1", "date": "2016-07-22" }, { "version": "0.1.3", "date": "2018-06-10" }, { "version": "0.1.4", "date": "2018-06-10" }, { "version": "0.1.5", "date": "2019-11-10" }, { "version": "0.1.6", "date": "2026-05-18" } ], "_exports": [ "AH", "C2K", "Es.T0", "K2C", "L", "Md", "MR", "Mw", "RH", "Rw", "SH", "SH2RH", "SVP", "SVP.ClaCla", "SVP.Murray", "T0", "WVP1", "WVP2" ], "_datasets": [ { "name": "ivs", "title": "Viability of influenza A virus for 1 hour after spraying", "object": "ivs", "class": [ "data.frame" ], "fields": [ "T", "RH", "PV" ], "rows": 11, "table": true, "tojson": true }, { "name": "ivt", "title": "Aerosol transmission efficiency of influenza A virus from guinea pigs to guinea pigs", "object": "ivt", "class": [ "data.frame" ], "fields": [ "T", "RH", "PT", "source" ], "rows": 24, "table": true, "tojson": true } ], "_help": [ { "page": "AH", "title": "calculate absolute humidity", "topics": [ "AH" ] }, { "page": "C2K", "title": "Celsius to Kelvin conversion", "topics": [ "C2K" ] }, { "page": "Es.T0", "title": "Saturation vapor pressure (hPa) at 0 degrees Celsius", "topics": [ "Es.T0" ] }, { "page": "ivs", "title": "Viability of influenza A virus for 1 hour after spraying", "topics": [ "ivs" ] }, { "page": "ivt", "title": "Aerosol transmission efficiency of influenza A virus from guinea pigs to guinea pigs", "topics": [ "ivt" ] }, { "page": "K2C", "title": "Kelvin to Celsius conversion", "topics": [ "K2C" ] }, { "page": "L", "title": "Latent heat of water vapor", "topics": [ "L" ] }, { "page": "Md", "title": "Molecular weight of dry air", "topics": [ "Md" ] }, { "page": "MR", "title": "calculate mixing ratio", "topics": [ "MR" ] }, { "page": "Mw", "title": "Molecular weight of water vapor", "topics": [ "Mw" ] }, { "page": "RH", "title": "calculate relative humidity", "topics": [ "RH" ] }, { "page": "Rw", "title": "Specific gas constant of water vapor", "topics": [ "Rw" ] }, { "page": "SH", "title": "calculate specific humidity", "topics": [ "SH" ] }, { "page": "SH2RH", "title": "convert specific humidity into relative humidity", "topics": [ "SH2RH" ] }, { "page": "SVP", "title": "calculate saturation vapor pressure", "topics": [ "SVP" ] }, { "page": "SVP.ClaCla", "title": "calculate saturation vapor pressure using the Clausius-Clapeyron equation", "topics": [ "SVP.ClaCla" ] }, { "page": "SVP.Murray", "title": "calculate saturation vapor pressure using the Murray equation", "topics": [ "SVP.Murray" ] }, { "page": "T0", "title": "Zero degrees Celsius in Kelvin", "topics": [ "T0" ] }, { "page": "WVP1", "title": "calculate partial water vapor pressure given dew point", "topics": [ "WVP1" ] }, { "page": "WVP2", "title": "calculate partial water vapor pressure given relative humidity and saturation water vapor pressure", "topics": [ "WVP2" ] } ], "_readme": "https://github.com/caijun/humidity/raw/HEAD/README.md", "_rundeps": [], "_vignettes": [ { "source": "humidity-measures.Rmd", "filename": "humidity-measures.html", "title": "Humidity Measures", "author": "Jun Cai caijun@fudan.edu.cn", "engine": "knitr::rmarkdown", "headings": [ "Saturation Vapor Pressure $e_s$", "Vapor Pressure $e$", "Relative Humidity $\\psi$", "Absolute Humidity $\\rho_w$", "Mixing Ratio $\\omega$", "Specific Humidity $q$", "References" ], "created": "2018-06-02 17:09:26", "modified": "2026-05-17 12:46:00", "commits": 5 }, { "source": "ivt_ivs-sh.Rmd", "filename": "ivt_ivs-sh.html", "title": "Regressions of Influenza A Virus Aerosol Transmission and Survival on Specific Humidity", "author": "Jun Cai caijun@fudan.edu.cn", "engine": "knitr::rmarkdown", "headings": [ "Regression of IVT on SH", "Regression of IVS on SH", "References" ], "created": "2019-11-09 17:13:49", "modified": "2026-05-17 12:46:00", "commits": 5 } ], "_score": 5.546542663478132, "_indexed": true, 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