Climate extremes are one of the main drivers of acute food insecurity. In Guatemala, acute food insecurity reaches alarming levels when the usual dry period during the bimodal rainy seasons is extended or starts earlier than expected. Drought has a slow-onset which theoretically leaves sufficient lead-time for addressing impacts on food security. In practice, emergency response to drought is often reactive and arrives late, starting when the crisis is already evolving. Climate services and food security information systems are key ingredients for integrated climate risk and food security management worldwide. In Guatemala, stakeholders broadly agree on the usefulness of this type of information for decision-making and direct significant efforts towards improving information availability and quality. But the impact of agro-climatic and food security information on decisions is ad hoc or not systematic. Through a mix of qualitative, ethnographic, and participatory methods, we investigated why this situation occurs. We found that different aspects lead to this phenomenon: the impact of drought on food security is mediated by different socio-economic, political, and institutional factors that tend to differ strongly between regions or even communities across the country. This puts special requirements on information provision for decision-making. Information use patterns can be explained by technical, data-related aspects as reliability, timeliness, or accessibility. But only by considering the institutional and organizational context we get a complete understanding on what frames the information-use patterns in climate and food security management in Guatemala. Our research shows that investments in technical aspects of data provision and infrastructure for increased climate and food security management need to address institutional and organizational challenges in order to be effective.

极端气候是严重粮食不安全的主要原因之一。在危地马拉，当双峰雨季的通常干旱期延长或比预期的提前开始时，严重的粮食不安全状况达到令人震惊的水平。干旱的起步较慢，从理论上讲，它留有足够的准备时间来解决对粮食安全的影响。在实践中，对干旱的应急反应通常是反应性的，并且是在危机已经演变之时开始的，到来较晚。气候服务和粮食安全信息系统是全球综合气候风险和粮食安全管理的关键要素。在危地马拉，利益相关者广泛同意这类信息对决策的有用性，并为提高信息的可用性和质量做出了重大努力。特别指定还是不系统 通过定性，人种学和参与性方法的混合，我们调查了为什么会发生这种情况。我们发现，导致这一现象的原因是不同的：干旱对粮食安全的影响是由不同的社会经济，政治和体制因素来调节的，而这些因素在全国甚至地区之间甚至社区之间都存在很大差异。这对用于决策的信息提供了特殊要求。信息使用模式可以通过与数据相关的技术方面来解释，例如可靠性，及时性或可访问性。但是，只有考虑到机构和组织的背景，我们才能全面了解危地马拉气候和粮食安全管理中信息使用模式的构成框架。