Saitin bayanan W5E5 ya ƙunshi abubuwan lura da sake nazari kuma ana amfani dashi don wakiltar bayanan da aka lura. Yana daga cikin Tasirin Model Intercomparison Project (ISIMIP3b), inda ake amfani da saitin bayanan don daidaita ƙimar tasirin tasiri. Saitin bayanan ya ƙunshi bayanan WFDE5 na tushen ƙasa da kuma tushen ERA5 dataset ɗin teku (bayanai da bayanan sake nazari) (Cucchi et al., 2020, Hersbach et al., 2020). Ƙarin tushen bayanai shine bayanan hazo daga sigar 2.3 na Aikin Hazo na Duniya (Adler et al., 2003).
W5E5 sigar 1.0 ta ƙunshi bayanai na tsawon lokaci daga 1979 zuwa 2017. Wannan yana nufin cewa shekaru goma 2011-2020, shekaru 6 kawai ke nan kuma haka ma taswirorin bambance-bambancen kawai dangi ne ga shekarun 1991-2014. Za mu ci gaba da sabuntawa da kuma sadar da ƙarin bayanai na W5E5 a cikin wannan shekaru goma. Saitin bayanan yana ba da ƙudurin sararin samaniya a kwance na 0.5° da ƙudurin ɗan lokaci na yau da kullun.
Matsalolin da aka haɗa a cikin bayanan sune kamar haka: dangi zafi kusa da saman (taƙaice: hurs, naúrar:%), takamaiman zafi kusa da saman (huss, kg kg-1), hazo (pr, kg m-2 s-1). Ruwan dusar ƙanƙara (prsn, kg m-2 s-1), matsa lamba na saman (ps, Pa), matsa lamba na teku (psl, Pa), saukowa mai tsayi mai tsayi radiation (rlds, W m-2), saukowa saman gajeriyar igiyar ruwa radiation (rsds, W m-2), saurin iskar kusa-kusa (sfcWind, m s-1), zafin iska na kusa-kasa (tas, K), matsakaicin zafin iska na yau da kullun (tasmax, K), mafi ƙarancin yau da kullun zafin iska na kusa da (tasmin, K), hawan saman (orog, m) da abin rufe fuska WFDE5-ERA5 (mask, 1) (Lange, 2019). Bayanan W5E5 na masu canji sune, sama da ƙasa da teku, matsakaicin yau da kullun na bayanan WFDE5 na sa'a. Ana samun canjin yanayi hurs, pr, psl, tasmax da tasmin kuma ana samun canjin teku tasmax da tasmin a cikin wani lissafin daban. An kwatanta wannan akan gidan yanar gizon mai zuwa: WFDE5 akan ƙasa hade da ERA5 akan teku (W5E5)
Ta zaɓin "Ayyuka" a cikin sashin Bayanan Tarihi na shafin Saituna, za ku iya ganin bayanan da aka lura na W5E5 dataset.
Sources:
Adler, RF, Huffman, GJ, Chang, A., Ferraro, R., Xie, P.-P., Janowiak, J., Nelkin, E. (2003). Siffar-2 Tsarin Hazo na Duniya (GPCP) Binciken Hazo na Watan (1979-Yanzu). Jaridar Hydrometeorology, 4 (6), 1147-1167. doi:10.1175/1525-7541(2003)004<1147:tvgppc>2.0.co;2
Cucchi, M., Weedon, GP, Amici, A., Bellouin, N., Lange, S., Müller Schmied, H., Hersbach, H., & Buontempo, C. (2020). WFDE5: bayanan sake nazari na ERA5 da aka daidaita don nazarin tasiri. Bayanan Kimiyyar Tsarin Duniya, 12(3), 2097-2120. doi.org/10.5194/essd-12-2097-2020
Hersbach, H., Bell, B., Berrisford, P., Hirahara, S., Horányi, A., Muñoz-Sabater, J., Nicolas, J., Peubey, C., Radu, R., Schepers, D, ., Simmons, A., Soci, C., Abdalla, S., Abellan, X., Balsamo, G., Bechtold, P., Biavati, G., Bidlot, J., Bonavita, M., … Thépaut, JN (2020). Binciken ERA5 na duniya. Jaridar Quarterly na Royal Meteorological Society, 146 (730), 1999-2049. https://doi.org/10.1002/QJ.3803
Lange, Stefan (2019): WFDE5 akan ƙasa ta haɗe tare da ERA5 akan teku (W5E5). V. 1.0. GFZ Data Services. doi.org/10.5880/pik.2019.023
Lange, S.: ISIMIP3BASD v2.4.1, https://doi.org/10.5281/zenodo.3898426, 2020.