Editing IPCC:AR6/SROCC/Chapter-3 (section)

===== 3.4.1.1.2 Depth and water equivalent =====

Weather station observations across the Russian Arctic identify negative trends in the maximum snow depth between 1966 and 2014 (Bulygina et al., 201 <sup>[[#fn:r1362|1362]]</sup> ; Osokin and Sosnovsky, 2014 <sup>[[#fn:r1363|1363]]</sup> ). There is ''medium confidence'' in this trend because the pointwise nature of these measurements does not capture prevailing conditions across the landscape. Seasonal maximum snow depth trends over the North American Arctic are mixed and largely statistically insignificant (Vincent et al., 2015 <sup>[[#fn:r1364|1364]]</sup> ; Brown et al., 2017 <sup>[[#fn:r1365|1365]]</sup> ). The timing of maximum snow depth has shifted earlier by 2.7 days per decade for the North American Arctic (Brown et al., 2017 <sup>[[#fn:r1366|1366]]</sup> ); comparable analysis is not available for Eurasia. Gridded products from remote sensing and land surface models identify negative trends in snow water equivalent between 1981 and 2016 for both the Eurasian and North American sectors of the Arctic (Brown et al., 2017 <sup>[[#fn:r1367|1367]]</sup> ). While the snow water equivalent anomaly time series show reasonable consistency between products when averaged at the continental scale, considerable inter-dataset variability in the spatial patterns of change (Liston and Hiemstra, 2011 <sup>[[#fn:r1368|1368]]</sup> ; Park et al., 2012 <sup>[[#fn:r1369|1369]]</sup> ; Brown et al., 2017 <sup>[[#fn:r1370|1370]]</sup> ) mean there is only ''medium confidence'' in these trends.

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