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Alexandra K. Anderson-Frey, Yvette P. Richardson, Andrew R. Dean, Richard L. Thompson, and Bryan T. Smith
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Paul C. Loikith, Benjamin R. Lintner, and Alex Sweeney
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Authors Ross D. Brown and Barry E. Goodison have reported an error in their article“Interannual variability in reconstructed Canadian snow cover, 1915-1992” that appeared in the June 1996 J. Climate, Vol. 9, No. 6, pages 1299-1318. The correction and revised Fig. 13 on p1314 are as follows.

It has come to our attention that an error was made in computing satellite-derived values of the North American (NA) winter snow-covered area used to calibrate a multiple regression model for estimating past variations in NA winter snow cover. The erroneous values were approximately 2 million km2 too low, and the corrected values caused some minor changes to the optimal regression model. With the cor rected data, a combination of four regions (northwest Great Plains, southwest Great Plains, PRA and WC) was able to account for 89% of the variance in NA winter snow-covered area over the 1972-1992 period. The revised reconstructed winter snow cover for NA is shown below (revised Figure 13). The revised results do not modify the conclusion reached in the paper that NA winter snow cover appears to have experienced a gradual increase of 11.0 x 103 km2 yr-x over much of this century. The increase was statistically significant at the 0.05 level with the unfiltered reconstructed data. The authors regret any inconvenience this error may have caused.

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Tim P. Barnett and Mojib Latif

coupled model.” J. Climate, 12, 1871–1872. Latif, M., and T. Barnett, 1994: Causes of decadal climate variability in the North Pacific/North American sector. Science, 266, 634–637.

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Dmitry Kiktev, David Sexton, Lisa Alexander, and Chris Folland

, bottom of left column) should have appeared as follows. The observed trend pattern for the number of wet days is also field significant at the 5% level. The main changes are an increased number of wet days over east Europe, central and northeast North America and Alaska, and decreases over the Sahel and Japan. The ensembles reproduce the observed Sahelian, Alaskan, and central North American trends but fail to simulate the changes over Europe. These corrections do not change the overall conclusions

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Francina Dominguez, Praveen Kumar, and Enrique R. Vivoni

.S. plains ecoregion. J. Climate , 21 , 5165 – 5186 . Dominguez , F. , P. Kumar , and E. R. Vivoni , 2008 : Precipitation recycling variability and ecoclimatological stability—A study using NARR data. Part II: North American monsoon region. J. Climate , 21 , 5187 – 5203 .

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Gabriel T. Bromley, Tobias Gerken, Andreas F. Prein, and Paul C. Stoy

. (1)] against a null hypothesis of no trend. Acknowledgments The National Center for Atmospheric Research is sponsored by the National Science Foundation. REFERENCE Bromley , G. T. , T. Gerken , A. F. Prein , and P. C. Stoy , 2020 : Recent trends in the near-surface climatology of the northern North American Great Plains . J. Climate , 33 , 461 – 475 , . 10.1175/JCLI-D-19-0106.1

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. 2. Wintertime atmospheric circulation in CCSM3 simulations. Zonal wind at 250 mb from the (a) PD and (b) LGM simulations (10 m s −1 contours). The Atlantic jet is stronger and more zonal, whereas the Pacific jet is largely unchanged. Geopotential height at 500 mb from the (c) PD and (d) LGM simulations (120-m contours with an offset of −5400 m). The Laurentide ice sheet over North America forces a strong stationary wave that intensifies the flow downstream. The thick solid lines in all the maps

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,heastern Canada., producedfast westerly flow across North America and the Atlantictit 700 mb. and. at set1 level (fig. 10B). This accompaniedrnpid eastward motion of t,he western Atlantic troughand the development southward of a full-latitude troughover eastern North America, but the United Statesportion of this trough was much weaker than normal.Except for slightly below normal temperature averagesin much of the west coast region, the Nation was unsea-sonably warm during tjhe last week (fig. 1OC

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-28.6. S. Teweles, L. Rot.herlhurg, and F. G. Finger, "The Circulation at the 10-Millibar Constant Pressure Surface over North America and -2djacent. Ocean -\reas, July 195i through June 1958," Monthly Ii'enther Rerirw, vol. 88, So. 1, dpr. 1900, pp. 137-150.7. D. ran Sahhen, "1onoq)heric Current Systems Caused by Son- Periodic IT'inds," Jorcrnnl of dtnwspheric and Trrrrslrinl Physics, vol. 24, SOV. 1962, pp. 959-9i1.8. E. H. Vestirlc, "Seasonal Changes in Day-to-Day Variability of Upper riir TT

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