...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Environmental Research and Public Health >Temporal Trends in Satellite-Derived Erythemal UVB and Implications for Ambient Sun Exposure Assessment
【24h】

Temporal Trends in Satellite-Derived Erythemal UVB and Implications for Ambient Sun Exposure Assessment

机译：卫星衍生的紫罗兰色UVB的时间趋势及其对环境阳光照射评估的意义

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Ultraviolet radiation (UVR) has been associated with various health outcomes, including skin cancers, vitamin D insufficiency, and multiple sclerosis. Measurement of UVR has been difficult, traditionally relying on subject recall. We investigated trends in satellite-derived UVB from 1978 to 2014 within the continental United States (US) to inform UVR exposure assessment and determine the potential magnitude of misclassification bias created by ignoring these trends. Monthly UVB data remotely sensed from various NASA satellites were used to investigate changes over time in the United States using linear regression with a harmonic function. Linear regression models for local geographic areas were used to make inferences across the entire study area using a global field significance test. Temporal trends were investigated across all years and separately for each satellite type due to documented differences in UVB estimation. UVB increased from 1978 to 2014 in 48% of local tests. The largest UVB increase was found in Western Nevada (0.145 kJ/m2 per five-year increment), a total 30-year increase of 0.87 kJ/m2. This largest change only represented 17% of total ambient exposure for an average January and 2% of an average July in Western Nevada. The observed trends represent cumulative UVB changes of less than a month, which are not relevant when attempting to estimate human exposure. The observation of small trends should be interpreted with caution due to measurement of satellite parameter inputs (ozone and climatological factors) that may impact derived satellite UVR nearly 20% compared to ground level sources. If the observed trends hold, satellite-derived UVB data may reasonably estimate ambient UVB exposures even for outcomes with long latency phases that predate the satellite record.
机译：紫外线（UVR）与各种健康状况相关，包括皮肤癌，维生素D功能不足和多发性硬化。传统上依靠主题召回来测量UVR一直很困难。我们调查了1978年至2014年美国大陆（美国）内人造卫星产生的UVB的趋势，以为UVR暴露评估提供信息，并通过忽略这些趋势来确定可能产生的误分类偏倚的程度。从美国国家航空航天局（NASA）各种卫星遥感得到的月度UVB数据，被用于研究具有谐波函数的线性回归在美国随时间的变化。使用全局场重要性检验，使用本地地理区域的线性回归模型对整个研究区域进行了推断。由于已记录的UVB估计差异，因此对全年进行了时间趋势调查，并对每种卫星类型分别进行了调查。从1978年到2014年，UVB在本地测试中增长了48％。在内华达州西部，UVB的增加最大（每五​​年增加0.145 kJ / m2），过去30年的总增加为0.87 kJ / m2。内华达州西部地区，这一最大变化仅占平均1月平均环境暴露的17％和7月平均2％的环境暴露。观察到的趋势表示累积的UVB变化少于一个月，这在尝试估计人体暴露量时不相关。由于对卫星参数输入（臭氧和气候因素）的测量可能会影响与地面水平源相比近20％的卫星UVR，因此对小趋势的观察应谨慎解释。如果观察到的趋势保持不变，则即使对于在卫星记录之前存在较长潜伏期的结果，由卫星得出的UVB数据也可以合理地估计环境UVB暴露。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号