A limited effect of sub-tropical typhoons on phytoplankton dynamics Biogeosciences DOI 10.5194/bg-18-849-2021 1 March 2021 Typhoons are assumed to stimulate primary ocean production through the upward mixing of nutrients into the ocean surface. This assumption is based largely on observations of increased surface chlorophyll concentrations following the passage of typhoons. This surface chlorophyll enhancement, occasionally detected by satellites, is often undetected due to intense cloud coverage. Read more
Volcanoes in video games: the portrayal of volcanoes incommercial off-the-shelf (COTS) video games and their learning potential Geoscience Communication DOI 10.5194/gc-4-11-2021 26 February 2021 Volcanoes are a very common staple in mainstream video games. Particularly within the action–adventure genres, entire missions or even full storylines can require players to traverse an active volcano. Therefore, players can spend a lot of time immersed within the detailed graphics and unknowingly learn about volcanic traits while playing. COTS) video games and their learning potential">Read more
Mass accommodation and gas–particle partitioning in secondary organicaerosols: dependence on diffusivity, volatility, particle-phase reactions,and penetration depth Atmospheric Chemistry and Physics DOI 10.5194/acp-21-1565-2021 25 February 2021 Mass accommodation is an essential process for gas–particle partitioning of organic compounds in secondary organic aerosols (SOA). The mass accommodation coefficient is commonly described as the probability of a gas molecule colliding with the surface to enter the particle phase. It is often applied, however, without specifying if and how deep a molecule has to penetrate beneath the surface to be regarded as being incorporated into the condensed phase (adsorption vs. absorption). Read more
A new view of heat wave dynamics and predictability over the easternMediterranean Earth System Dynamics DOI 10.5194/esd-12-133-2021 24 February 2021 Skillful forecasts of extreme weather events have a major socioeconomic relevance. Here, we compare two complementary approaches to diagnose the predictability of extreme weather: recent developments in dynamical systems theory and numerical ensemble weather forecasts. Read more
An overview of the ORACLES (ObseRvations of Aerosols above CLouds and theirintEractionS) project: aerosol–cloud–radiation interactions in the southeastAtlantic basin Atmospheric Chemistry and Physics DOI 10.5194/acp-21-1507-2021 23 February 2021 Southern Africa produces almost a third of the Earth’s biomass burning (BB) aerosol particles, yet the fate of these particles and their influence on regional and global climate is poorly understood. ORACLES (ObseRvations of Aerosols above CLouds and their intEractionS) is a 5-year NASA EVS-2 (Earth Venture Suborbital-2) investigation with three intensive observation periods designed to study key atmospheric processes that determine the climate impacts of these aerosols. ORACLES (ObseRvations of Aerosols above CLouds and theirintEractionS) project: aerosol–cloud–radiation interactions in the southeastAtlantic basin">Read more
Synchronized spatial shifts of Hadley and Walker circulations Earth System Dynamics DOI 10.5194/esd-12-121-2021 22 February 2021 Here, by examining the spatiotemporal relationship between Hadley and Walker cells in observations and climate model experiments, we demonstrate that the seasonally evolving warm-pool sea surface temperature (SST) anomalies in the decay phase of an El Niño event generate a meridionally asymmetric Walker circulation response, which couples the zonal and meridional atmospheric overturning circulations. Read more
A revision of the Combined Drought Indicator (CDI)used in the European Drought Observatory (EDO) Natural Hazards and Earth System Sciences DOI 10.5194/nhess-21-481-2021 19 February 2021 Building on almost 10 years of expertise and operational application of the Combined Drought Indicator (CDI), which is implemented within the European Commission’s European Drought Observatory (EDO) for the purposes of early warning and monitoring of agricultural droughts in Europe, this paper proposes a revised version of the index. CDI)used in the European Drought Observatory (EDO)">Read more
The transient sensitivity of sea level rise Ocean Science DOI 10.5194/os-17-181-2021 18 February 2021 Here, we introduce a similar metric for sea level response. We find that future projections estimated on climate model responses fall below extrapolation based on recent observational records.This comparison suggests that the likely upper level of sea level projections in recent IPCC reports would be too low. Read more
Coordinating an operational data distribution network for CMIP6 data Geoscientific Model Development DOI 10.5194/gmd-14-629-2021 17 February 2021 The distribution of data contributed to the Coupled Model Intercomparison Project Phase 6 (CMIP6) is via the Earth System Grid Federation (ESGF). The ESGF is a network of internationally distributed sites that together work as a federated data archive. Read more
Greenland climate simulations show high Eemian surface meltwhich could explain reduced total air content in ice cores Climate of the Past DOI 10.5194/cp-17-317-2021 16 February 2021 This study presents simulations of Greenland surface melt for the Eemian interglacial period (∼130,000 to 115, 000 years ago) derived from regional climate simulations with a coupled surface energy balance model. Read more
