Geoinženiring kot orodje za blaženje podnebnih sprememb

diplomsko delo

Luka Kocjan (Author), Zalika Črepinšek (Mentor)

Abstract

Kmetijstvo je neposredno odvisno od vremena in podnebnih razmer. Je med najbolj ranljivimi sektorji gospodarstva, zato so učinkoviti ukrepi prilagajanja in blaženja podnebnih sprememb nujno potrebni. Geoinženiring (geoengineering) je proces namernega spreminjanja in prilagajanja podnebja z namenom blaženja podnebnih sprememb. Blaženje podnebnih sprememb pomeni ukrepe, ki zmanjšujejo emisije toplogrednih plinov ali njihovo intenzivnost, oziroma ukrepe, ki prispevajo k izločanju toplogrednih plinov iz ozračja. Metode geoinženiringa so nove in večinoma še nepreizkušene, pomenijo pa vmešavanje v podnebni sistem, da bi ublažili in izravnali učinke antropogenih podnebnih sprememb. To bi se potencialno lahko izvedlo s pomočjo treh metod: z metodo odstranjevanja CO2 iz ozračja, metodo spremembe vremena na lokalni ravni in metodo omejevanja sončnega sevanja. V nalogi je podan pregled metod za odstranjevanje CO2 iz ozračja (CDR metode – carbon diokside removal) in sicer biotske metode: pogozdovanje, uporaba bioenergije v kombinaciji z zajemanjem in skladiščenjem CO2, uporaba biooglja, bogatenje tal z ogljikom z uporabo kamninskega prahu in gnojenje oceanov za povečanje vezave CO2, metode mineralizacije in ostale abiotske metode: pospeševanje preperevanja, alkalinizacija oceanov ter direktno zajemanje CO2 iz zraka in skladiščenje le-tega. Predstavljene so tudi metode za zmanjševanje izpustov CO2 v ozračje direktno na virih emisij: CCS tehnike (metode zajetja in skladiščenja CO2) ter CCU tehnike (metode zajetja in uporabe CO2, npr. vezava v beton). Poleg že pričakovanih negativnih fizikalnih učinkov obstaja pri vseh metodah tudi tveganje za nastanek nepričakovanih in nepredvidljivih posledic ter možnih družbenih zlorab.

Keywords

geoinženiring;podnebne spremembe;blaženje;metode za odstranitev CO2;energijska bilanca;

Data

Language:	Slovenian
Year of publishing:	2019
Typology:	2.11 - Undergraduate Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[L. Kocjan]
UDC:	551.58(043.2)
COBISS:	9277049
Views:	1063
Downloads:	229
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Geoengineering as a tool for climate change mitigation
Secondary abstract:	Agriculture depends directly on weather and climatic conditions. It is one of the most vulnerable sectors of the economy, therefore the effective measures to adapt and mitigate climate change are indispensable. Geoengineering is a process of deliberate change and adaptation of the climate with the aim of mitigating climate change. Mitigation of climate change means measures that reduce greenhouse gas emissions or their intensity, or measures that contribute to the exclusion of greenhouse gases from the atmosphere. The methods of geoengineering are new and mostly untested, and they involve interference in the climate system in order to mitigate and offset the effects of anthropogenic climate change. This could potentially be done using three methods: the method of removing CO2 from the atmosphere, the method of altering the weather at a local level and the method of limiting solar radiation. This paper provides an overview of the methods for carbon dioxide removal (CDR methods), namely biotic methods: afforestation, use of bioenergy in combination with capture and storage of CO2, use of bio-coal, soil carbonization using rock dust and ocean fertilization to increase CO2 binding, mineralization methods and other abiotic methods: accelerating repercussion, ocean alkalinization, and direct capture of CO2 from the air and its storage. Among presented methods are also methods for reducing CO2 directly on sources of emissions: CCS techniques (methods of capture and storage of CO2) and CCU techniques (methods of capturing and using CO2, e.g. binding to concrete). In addition to the anticipated negative physical effects, for all methods, there is a risk of unexpected and unpredictable consequences and potential social abuses.
Secondary keywords:	geoengineering;climate changes;mitigation;CO2 removal methods;energy balance;
Type (COBISS):	Bachelor thesis/paper
Study programme:	0
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Biotehniška fak., Oddelek za agronomijo
Pages:	VIII, 22 str.
ID:	11209669