Kei te tipu haere te taupori o te ao, ā, mō te tini, ka piki haere tonu ngā paerewa oranga. Nō reira, e matapaetia ana ka piki rua te hiahia mō te pūngao o te ao i te tau 2050 ki te whakataurite ki te tau 2000.
Hei āwhina i te whakatutuki i tēnei hiahia, ka nui haere te hiranga o te hau. He nui te hau māori, ā, koinei te wahie pūmua tino ma. Engari kei ngā wāhi tawhiti ētahi rauemi hau māori: he utu nui, he koretake hoki te kawe i te hau ki tawhiti mā te paipa.
Ko te otinga? Ka whakawaiwai mātou i te hau mā te whakamatao, ka whakaiti i tōna rahinga kia māmā ake ai, kia ohanga ai, kia haumaru ai hoki te kawe kaipuke. Nā, me pēhea te whakaputa i te hau māori wai? Kei roto i te hau māori e tangohia ana i te whenua ngā poke, te wai me ētahi atu wai e pā ana.
Tuatahi ka tukatukahia hei horoi. Ka haere mā roto i tētahi raupapa paipa me ngā oko e āwhina ai te kaha ā-papa ki te wehe i te hau mai i ētahi o ngā wai taumaha. Kātahi ka tangohia atu ētahi atu poke. Ka haere te hau māori mā roto i tētahi whakarewa wai e mimiti ana i te hauhā me te hauwai whanariki. Ki te kore, ka tio ēnei ina whakamataohia te hau, ā, ka puta he aukati. Muri iho, ka tangohia te wai e toe ana, nā te mea ka tio anō hoki. Hei whakamutunga, ka tangohia ngā wai hau māori māmā ake e toe ana – ko te propane me te butane te nuinga – hei hoko motuhake, hei whakamahi rānei hei whakamatao i muri mai i te tukanga whakamatao.
Ka tātarihia hoki ngā toenga o te mercury. Inaianei kua rite te hau maori kua purea – te methane me ētahi ethane – ki te whakarewa. Ka tupu tēnei i roto i ngā whakawhiti wera. Ka mimitihia te wera mai i te hau maori e te wai whakamatao, e whakamataohia ana e ngā pouaka whakamātao nunui. Ka whakamataohia te hau ki te –162°C, ka whakaitihia tōna rahinga mā te 600 ngā wā.
Mā tēnei ka huri hei wai mārama, kore tae, kore paitini – te hau māori waikura, te LNG rānei – he māmā ake te penapena me te kawe. Ka puritia te LNG i roto i ngā tāke kua whakamahanatia, kia rite rā anō mō te uta ki roto i tētahi kaipuke, i tētahi kaikawe LNG rānei i hangaia mōna. Ina tae te kaipuke ki tōna ūnga, ka whakawhitia te LNG ki tētahi tipu whakapūngao anō, ka whakamahanahia, ka whakahokia ki tōna āhua hau. Kātahi ka haria te hau mā roto i ngā paipa ki ngā kiritaki, ka whakarato pūngao mō ngā kāinga me ngā ahumahi.
Kei te āwhina tonu a Hengzhong ki te whakatutuki i te hiahia pūngao e tipu haere ana mā te whakamahi i te hau maori e tahu ana i te hau maori.
Wā tuku: Hakihea-31-2021