- 著者
- Mottram Ruth Boberg Fredrik Langen Peter Yang Shuting Rodehacke Christian Christensen Jens Hesselbjerg Madsen Marianne Sloth
- 出版者
- 低温科学第75巻編集委員会
- 雑誌
- 低温科学
- 巻号頁・発行日
- pp.105-115, 2017-03-31
Surface mass balance (SMB) is the builder of the Greenland ice sheet and the driver of ice dynamics. Quantifying the past, present and future state of SMB is important to understand the drivers and climatic processes that control SMB, and to both initialize and run ice sheet models which will help clarify sea level rise, and how likely changes in ice sheet extent feedback within the climate system. Regional climate models (RCMs) and climate reanalysis are used to quantify SMB estimates. Although different models have different spatial and temporal biases and may include different processes giving significant uncertainty in both SMB and the ice sheet dynamic response to it, all RCMs show a recent declining trend in SMB from the Greenland ice sheet, driven primarily by enhanced melt rates. Here, we present new simulations of the Greenland ice sheet SMB at 5 km resolution from the RCM HIRHAM5. The RCM is driven by the ERA-Interim reanalysis and the global climate model (GCM) EC-Earth v2.3 to make future projections for climate scenarios RCP8.5 and RCP4.5. Future estimates of SMB are affected by biases in driving global climate models, and feedbacks between the ice sheet surface and the global and regional climate system are neglected, likely resulting in significant underestimates of melt and precipitation over the ice sheet. These challenges will need to be met to better estimate the role climate change will have in modulating the surface mass balance of the Greenland ice sheet.
言及状況
外部データベース (DOI)
Twitter (147 users, 159 posts, 59 favorites)
@Kenneth72712993 @jimdtweet @oakden_wolf @DenglerJoachim @NikolovScience @FriendsOScience @joedieseldodge @robhon_ @Over400ppm @CheezeWhiz_girl @notGHGs @zwerfkat @KCTaz @TQMKA @MichaelEPerrone @jgorman2424 @serveBC @TWTThisIsNow @BubbasRanch @priscian @MLBinWA @No1Trump @DawnTJ90 @caerbannog666 @eachus @Curmudgeon1836 @SantasTavern @stevenmosher @SpurglyD @claude_roumain @BeerOClock7 @Setophaga9 @Dang83616 @DavidMichaelRi8 @ToneyBrooks @Voight_Kampff_3 @BArgentavis @HuygensWill @EthonRaptor @5_cambridge @freddreise @ladyspat1 @SUFANbowserjr @Gladfly1 @rln_nelson @nevaudit @BernardoVerda @ElectricElecti1 @10kclimate https://t.co/Hbrmw4mKAl https://t.co/qwePdZhktH
We have also run some future simulations at high resolution (5km) as described in my paper here: https://t.co/UUjPT0HRCP
I will show how this can give us important information for infrastructure as in a paper just accepted on #Kangerlussaq + W #Greenland https://t.co/stbcSQaL4f
#CambioClimatico producirá en mediano plazo mayor derretimiento pero también alza de Nevadas sobre #Groenlandia. https://t.co/TYdQnTxXi8 https://t.co/cb3dTS01KY
@dmidk Paper recently published by @PolarPortal scientists shows this in detail, see:
https://t.co/XNv5iJayhy
Precipitation increases, but so does #glacier melt in #Greenland, question is which one "wins"! https://t.co/dALiy7HOUi