Ogige nke World Meteorological Organization
World Meteorological Organization (WMO) squares bụ usoro nke geocodes nke na-ekewa map ụwa nwere gridlines latitude-longitude n'ime mkpụrụ ndụ grid nke 10° latitude site na 10° longitude, nke ọ bụla nwere njirimara ọnụọgụ anọ pụrụ iche (lee chaatị na NODC World Ocean Database 2005 page). Na mpempe akwụkwọ carrée, mkpụrụ ndụ grid na-apụta square; Otú ọ dị, ọ bụrụ na ejiri mpempe akwụkwọ Mercator mee ihe, mkpụrụ ndụ grid na-apụrụ 'gbatị' n'ụzọ kwụ ọtọ n'akụkụ elu na ala nke map. N'elu Globe n'ezie n’ezie, mkpụrụ ndụ ndị ahụ bụ ihe dị ka "square" naanị n'akụkụ Equator, ma na-adịwanye mkpụmkpụ ma na-agbatị (nakwa na nsọtụ ugwu na ndịda) ka ha na-eru nso n'osisi, mkpụrụ ndụ dị n'akụkụ osisi ndị ahụ bụ ndị pụrụ iche n'inwe ihu atọ kama anọ.

A na-enyezikwa square 10°x10° ọ bụla nọmba dị n'etiti otu puku ya na puku asaa nari asato na iri na asaa . Usoro nọmba ahụ dabere na nọmba nke "global quadrant" ebe 1=NE, 3=SE, 5=SW, 7=NW nke na-enye nọmba mbụ nke koodu square ọ bụla (1xxx, 3xxx, 5xxx, 7xxx). Nọmba nke abụọ bukwazi  (x0xx site na x8xx) na-egosi ọnụọgụ iri nke ogo latitude (n'ebe ugwu na quadrants ụwa otu na asaa, ndịda na quadrents ụwa ato na ise) nke 'karịsịa' square ókèala (nke dị nso na Equator), ya bụ, mkpụrụ ndụ na-agbasa n'etiti 10°N na 20°N (maọbụ 10°S na 20°S) nwere nọmba a = 1, mkpụrụ ndụ na'etiti 20°N nwere nọmba a: wdg. Nọmba nke atọ na nke anọ (xx00 ruo xx17) n'otu aka ahụ na-egosikwa ọnụ ọgụgụ nke iri ogo nke longitude nke 'karịsịa' square boundary, kacha nso na Prime Meridian. Site n'ihe atụ, square puku si otú a gbasaa site na 0°N ruo 10°N, 0°E ruo 10°E, na square 7817 site na 80°N ruo 90°N, 170°W wee ruo 180°W, n'akụkụ akụkụ dị mkpa nke International Date Line. N'ụzọ dị otú a, reverse-engineering (decoding) ókèala square dị mkpa site na njirimara nke ndi WMO Square ọ bụla dị mfe, n'adịghị ka usoro ndị ọzọ yiri ya dị ka. Ogige Marsden

A na-ejikwazi square WMO were mee ihe dị ka ihe ndabere maka usoro c-squares maka ndepụta nke oghere, nke na-ekewawanye square 10°x10° WMO n'ime obere nkeji nke gunyekwaziri  5°x5°, 1°x1°, 0.5°x0.5°, 0.1°x0.1°, na ihe ndị ọzọkwazi.

Hụkwazie 

 Geocode
 Grid (nchịkọta oghere)
 Ogige Marsden
 C-square
 QDGC