Browsing by Subject "Arctic"
Now showing items 1-11 of 11
-
Always ready? Primary production of Arctic phytoplankton at the end of the polar night
(Limnology and Oceanography Letters, 2021-11-11)
The end of the polar night with the concurrent onset of photosynthetic biomass production ultimately leads to the spring bloom, which represents the most important event of primary production for the Arctic marine ecosystem. ... -
Arctic Ocean Surface Energy Flux and the Cold Halocline in Future Climate Projections
; ; (Journal of Geophysical Research: Oceans, 2020)
Ocean heat transport is often thought to play a secondary role for Arctic surface warming in part because warm water which flows northward is prevented from reaching the surface by a cold and stable halocline layer. However, ... -
Arctic Sea Ice in CMIP6
; Community, SIMIP (Geophysical Research Letters, 2020-05-14)
We examine CMIP6 simulations of Arctic sea‐ice area and volume. We find that CMIP6 models produce a wide spread of mean Arctic sea‐ice area, capturing the observational estimate within the multimodel ensemble spread. The ... -
Following moist intrusions into the Arctic using SHEBA observations in a Lagrangian perspective
; (Quarterly Journal of the Royal Meteorological Society, 2020)
Warm and moist air masses are transported into the Arctic from lower latitudes throughout the year. Especially in winter, such moist intrusions (MIs) can trigger cloud formation and surface warming. While a typical cloudy ... -
From Bright Windows to Dark Spots: Snow Cover Controls Melt Pond Optical Properties During Refreezing
; ; ; ; (Geophysical Research Letters, 2021-12-02)
Melt ponds have a strong impact on the Arctic surface energy balance and the ice‐associated ecosystem because they transmit more solar radiation compared to bare ice. In the existing literature, melt ponds are considered ... -
Impact of Sea‐Ice Model Complexity on the Performance of an Unstructured‐Mesh Sea‐Ice/Ocean Model under Different Atmospheric Forcings
; ; ; ; ; (Journal of Advances in Modeling Earth Systems, 2021-04-27)
We have equipped the unstructured‐mesh global sea‐ice and ocean model FESOM2 with a set of physical parameterizations derived from the single‐column sea‐ice model Icepack. The update has substantially broadened the range ... -
Modeling the Microwave Emission of Snow on Arctic Sea Ice for Estimating the Uncertainty of Satellite Retrievals
; ; ; ; (Journal of Geophysical Research: Oceans, 2020)
Within a rapidly changing Arctic climate system, snow on sea ice is an important climate parameter. A common method to derive snow depth on an Arctic-wide scale is based on passive microwave satellite observations. However, ... -
Near-Complete Local Reduction of Arctic Stratospheric Ozone by Severe Chemical Loss in Spring 2020
; ; Lehmann, R.; ; ; ; Davies, J.; ; Jepsen, N.; ; Lyall, N.; Rex, M. (Geophysical Research Letters, 2020)
In the Antarctic ozone hole, ozone mixing ratios have been decreasing to extremely low values of 0.01–0.1 ppm in nearly all spring seasons since the late 1980s, corresponding to 95–99% local chemical loss. In contrast, ... -
Recent advances in the study of Arctic submarine permafrost
; ; ; ; (Permafrost and Periglacial Processes, 2020)
Submarine permafrost is perennially cryotic earth material that lies offshore. Most submarine permafrost is relict terrestrial permafrost beneath the Arctic shelf seas, was inundated after the last glaciation, and has been ... -
Sea Ice and Atmospheric Parameter Retrieval From Satellite Microwave Radiometers: Synergy of AMSR2 and SMOS Compared With the CIMR Candidate Mission
; ; ; ; ; ; (Journal of Geophysical Research: Oceans, 2020)
Research on improving the prediction skill of climate models requires refining the quality of observational data used for initializing and tuning the models. This is especially true in the polar regions where uncertainties ... -
Sensitivity to changes in the surface‐layer turbulence parameterization for stable conditions in winter: A case study with a regional climate model over the Arctic
;; ; ; ; ; ; ; (Atmospheric Science Letters, 2021-08-24)
The modeling of the atmospheric boundary layer over sea ice is still challenging because of the complex interaction between clouds, radiation and turbulence over the often inhomogeneous sea ice cover. There is still much ...
