We compare measurements of the turbulent and radiative surface energy fluxes from an automatic weather station (AWS) on Larsen C Ice Shelf, Antarctica with corresponding fluxes from three high-resolution atmospheric models over a one-month period during austral summer. All three models produce a reasonable simulation of the (relatively small) turbulent energy fluxes at the AWS site. However, biases in the modelled radiative fluxes, which dominate the surface energy budget, are significant. There is a significant positive bias in net shortwave radiation in all three models, together with a corresponding negative bias in net longwave radiation. In two of the models, the longwave bias only partially offsets the positive shortwave bias, leading to an excessive amount of energy available for heating and melting the surface, while, in the third, the negative longwave bias exceeds the positive shortwave bias, leading to a deficiency in calculated surface melt. Biases in shortwave and longwave radiation are anticorrelated, suggesting that they both result from the models simulating too little cloud (or clouds that are too optically thin). We conclude that, while these models may be able to provide some useful information on surface energy fluxes, absolute values of modelled melt rate are significantly biased and should be used with caution. Efforts to improve model simulation of melt should initially focus on the radiative fluxes and, in particular, on the simulation of the clouds that control these fluxes.
View Comments The Broadway.com staff is crazy for Culturalist, the website that lets you choose and create your own top 10 lists. Every week, we’re challenging you with a new Broadway-themed topic to rank.It’s the end of a tuna-tastic era! After extending twice on the Great White Way and recouping its investment, Oh, Hello is set to close on Broadway on January 22. Bespectacled geezers Gil Faizon and George St. Geegland (a.k.a. Nick Kroll and John Mulaney) invited loads of guests to the stage during the play’s glorious run, including celebrity comedians, on screen stars, a drag queen and even a few Broadway faves. Oh, Hello may be closing, but we have hopes some of these guests will bring their own delightful battiness to the stage someday soon. We want to know which of your fave guests that’s never had a Broadway gig (save for being berated by Gil and George) should come to the Great White Way. Broadway.com Video Producer Lisa Spychala accepted this challenge with her top 10. Now it’s your turn!STEP 1—SELECT: Visit Culturalist to see all of your options. Highlight your 10 favorites.STEP 2—RANK & PUBLISH: Click “rearrange list” to order your selections. Click the “publish” button.Once your list is published, you can see the overall rankings of everyone on the aggregate list.Pick your favorites, then tune in for the results next week on Broadway.com! (Photo: Getty Images)
Categories: Letters to the Editor, OpinionMore proof Trump doesn’t understand our military or our democracy: He could have been the military man he says he is. But he instead used his money (fake medical) not to. He played golf while others were killed, maimed and got PTSD. The military should not be used to feed his ego and bullying personality.Jeffery DareLathamMore from The Daily Gazette:EDITORIAL: Beware of voter intimidationEDITORIAL: Thruway tax unfair to working motoristsEDITORIAL: Find a way to get family members into nursing homesFoss: Should main downtown branch of the Schenectady County Public Library reopen?Albany County warns of COVID increase