Hadaya

**HadCRUT** shine bayanan bayanan zafin kayan aiki na kowane wata na duniya da aka kafa ta hanyar haɗa bayanan zafin saman teku wanda Cibiyar Hadley ta Ofishin Kula da Biritaniya ta tattara da kuma bayanan yanayin iska na ƙasa wanda Sashin Binciken Yanayi (CRU) na Jami'ar Gabashin Anglia ya tattara. 

"Had**C**" yana **T** ne don Cibiya**R** Hadley / Yanayin Binciken Yanayi.

Ana ba da bayanan a kan grid na akwatunan da ke rufe duniya, tare da dabi'u da aka bayar kawai ga waɗancan akwatunan da suka ƙunshi lura da zafin jiki a cikin wata da shekara. Ba a amfani da Interpolation don cika ƙimar da ta ɓace ba. Sashe na farko na HadCRUT da farko ya kunshi lokacin 1881-1993, kuma daga baya aka tsawaita wannan don farawa a 1850 kuma a sabunta shi akai-akai zuwa shekara / wata na yanzu a kusa da ainihin lokacin.

## HadCRUT4
An gabatar da HadCRUT4 a watan Maris na shekara ta 2012.  "Ya haɗa da ƙarin sabbin bayanan ma'auni na dijital, a kan ƙasa da teku, sabbin gyare-gyaren yanayin zafi na teku da kuma cikakkiyar samfurin kuskure don bayyana rashin tabbas a cikin ma'aunin yanayin zafi na ruwa". Gabaɗaya, tasirin HadCRUT4 da HadCRUT3 ƙaruwa ne a cikin matsakaicin yanayin zafin jiki, musamman a kusa da 1950 da 1855, kuma ƙasa da mahimmanci a kusa da 1925 da 2005.

## HadCRUT3
HadCRUT3 shine babban bita na uku na wannan dataset, haɗuwa da dataset na yanayin zafi na ƙasa na CRUTEM3 tare da dataset ɗin yanayin zafi na teku na HadSST2. An fara buga shi a shekara ta 2006, wannan da farko ya kasance a cikin shekarun 1850-2005, amma tun daga lokacin an sabunta shi akai-akai zuwa 2012. Akwatin grid na sararin samaniya sune 5 ° na latitude da longitude. An gabatar da cikakkiyar ƙididdigar ƙididdigatattun ƙididdiga tare da wannan bita, gami da kimantawa na kuskuren ma'auni, son zuciya saboda canza bayyanar da birane, da rashin tabbas saboda rashin cikakkiyar ɗaukar duniya ta hanyar lura da zafin jiki.

## HadCRUT2
HadCRUT2 ita ce ta biyu mafi girma na wannan dataset, ta haɗu da dataset na yanayin zafi na ƙasa na CRUTEM2 tare da dataset ɗin yanayin zafi na teku na HadSST. An fara buga shi a shekara ta 2003, wannan da farko ya kasance a cikin 1856-2001, amma daga baya an sabunta shi don ƙare a shekara ta 2005. Akwatin grid na sararin samaniya sune 5 ° na latitude da longitude. An haɗa ƙididdigar rashin tabbas saboda ƙarancin ƙwayoyin duniya ta hanyar lura da zafin jiki, kamar yadda aka haɗa sigar da bambancin da aka gyara don cire canje-canje na wucin gadi da ke tasowa daga canza yawan abubuwan lura.

## HadCRUT1
HadCRUT1 ita ce sigar farko ta wannan dataset. Kodayake da farko ba a kira shi HadCRUT1 ba, an gabatar da wannan sunan daga baya don rarrabe shi daga sassan da suka biyo baya. An fara buga shi a cikin 1994, wannan da farko ya kasance a cikin shekara ta 1881-1993, amma daga baya aka tsawaita shi zuwa 1856-2002. HadCRUT1 da farko ya haɗu da bayanan zafin jiki na teku guda biyu (MOHSST na 1881-1981 da GISST na 1981-1993) tare da bayanan zajin iska na ƙasa na baya daga Sashin Binciken Yanayi. An maye gurbin bayanan yanayin zafi na ƙasa a cikin 1995 tare da sabon bayanan CRUTEM1 da aka buga. Akwatin grid na sararin samaniya sune 5 ° na latitude da longitude.

## Tarihin Bayanan Yanayi na CRU
Sashin Binciken Yanayi yana da fifiko na farko na cika gibin a cikin bayanan da ake da su "don kafa rikodin yanayi na baya a kan yawancin duniya yadda zai yiwu, kuma a cikin isasshen bayani don ganewa da kafa matakai na asali, hulɗa, da juyin halitta a cikin ambulaf ɗin ruwa na Duniya da waɗanda suka shafi ɓawon Duniya da murfin ciyayi". A cikin shekarun 1970s sashin ya yi aiki a kan fassarar tarihin tarihi. Daga 1978 zuwa gaba CRU ta fara samar da bayanan da aka tsara na yanayin zafin iska na ƙasa bisa ga bayanan zafin jiki na kayan aiki da Ƙungiyoyin Meteorological na Kasa ke gudanarwa a duniya. A cikin 1986 an kara yanayin zafi na teku don samar da kira na bayanai wanda shine rikodin zafin jiki na farko na duniya, yana nuna cewa duniya ta yi zafi da kusan 0.8 ° C a cikin shekaru 157 da suka gabata. Daga 1989 wannan aikin ya ci gaba tare da Cibiyar Hadley ta Ofishin Met don Tsinkaya da Bincike, kuma ayyukansu sun nuna dumamar duniya kusan 0.8 ° C a cikin shekaru 157 da suka gabata.

## Manazarta