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Changing weather and climate in Northern Ghana: comparison of local perceptions with meteorological and land cover data

机译：加纳北部天气和气候的变化：将当地的看法与气象和土地覆盖数据进行比较

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摘要

Local perspectives on changing weather and climate and analyses of meteorological data represent two different but potentially complementary ways of knowing about the local-scale impacts of global climate change. This paper uses quantitative social survey data from the Kassena and Nankana Districts of Northern Ghana and the best available meteorological records to examine recent changes in weather patterns for this region. The most commonly mentioned changes perceived by respondents include changes in the timing or predictability of rains, and overall drier conditions. Both of these changes are corroborated by precipitation datasets: The onset of the peak rainy season has shifted progressively later over the past decade, by up to a month, and the rainy season has been drier over the past 3-5 years compared to the past 10-35 years, mainly due to lower rainfall during peak months (June and July). Many respondents also said that conditions had become windier, and we find that this perception varies spatially within the districts, but no meteorological data are available for this climate parameter in this region. The common perception that deforestation is responsible for observed changes in weather patterns is partly supported by Landsat imagery indicating a reduction in dense vegetation in recent decades. This comparison highlights some of the potential benefits and challenges involved in giving more voice to community perspectives in the co-production of knowledge on global climate change and its regional impacts.
机译：关于气候和气候变化的地方观点以及气象数据的分析代表了两种不同的但可能是互补的了解全球气候变化对地方影响的方式。本文使用了来自加纳北部的Kassena和Nankana地区的定量社会调查数据，以及可获得的最佳气象记录，以研究该地区天气模式的最新变化。受访者最常提及的变化包括降雨时间或可预测性的变化，以及整体干燥的条件。降水数据集证实了这两种变化：在过去十年的后期，高峰雨季的发生已逐渐转移，长达一个月，而且过去3-5年的雨季比过去更干燥。 10-35年，主要是由于高峰月份（6月和7月）降雨减少。许多受访者还说，情况已经变暖，我们发现这些感知在各地区之间在空间上有所不同，但是在该地区没有有关该气候参数的气象数据。 Landsat影像在一定程度上支持了人们普遍认为森林砍伐是造成观测到的气候变化的普遍看法，这表明近几十年来茂密的植被有所减少。这种比较突出显示了在共同生产有关全球气候变化及其区域影响的知识时，要在社区观点上发表更多意见所涉及的一些潜在的利益和挑战。

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