Member Since 1992
Karen Hepler Rosenlof
Senior Scientist, NOAA Chemical Sciences Laboratory
AGU Research
Search
Filters
Clear All
Microphysical Simulation of the 2022 Hunga Volcano Eruption Using a Sectional Aerosol Model
GEOPHYSICAL RESEARCH LETTERS
11 june 2024
Chenwei Li, Elizabeth Asher, Alexandre Baron, Jian...
Approximately 150 Tg of water vapor and 0.42 Tg of sulfur dioxide were injected directly into the stratosphere by the January 2022 Hunga ...
Enhanced Aerosol Mass in the Tropical Tropopause Layer Linked to Ozone Abundance
GEOPHYSICAL RESEARCH LETTERS
17 april 2024
Shang Liu, Troy D. Thornberry, Pengfei Yu, Sarah W...
Aerosol particles play a critical role in the tropical tropopause layer (TTL) through cloud formation and heterogeneous chemistry, influencing the ...
Stratospheric ozone depletion inside the volcanic plume shortly after the 2022 Hunga Tonga eruption
ATMOSPHERIC AND CLIMATE IMPACTS OF THE HUNGA TONGA VOLCANIC ERUPTION III ORAL
atmospheric sciences | 14 december 2023
Yunqian Zhu, Robert W. Portmann, Douglas E. Kinnis...
Near-term in-plume ozone depletion was observed for about ten days by Microwave Limb Sounder (Aura/MLS) right after the January 2022 Hunga Tonga-Hunga...
View Abstract
Underestimation of Anthropogenic Bromoform Emissions: Implications for Ozone Depletion
THE SURFACE OCEAN-LOWER ATMOSPHERE STUDY (SOLAS): 20 YEARS OF PROGRESS AND DEVELOPMENTS IN OCEAN-ATMOSPHERE SCIENCE II POSTER
ocean sciences | 14 december 2023
Yue Jia, Sean M. Davis, Susann Tegtmeier, Birgit Q...
Bromoform (CHBr3), a recognized contributor to stratospheric ozone depletion, has been largely exempt from the Montreal Protocol's regulation due to i...
View Abstract
The Uncommon Optical and Microphysical Properties of Hunga Tonga Aerosols
ATMOSPHERIC AND CLIMATE IMPACTS OF THE HUNGA TONGA VOLCANIC ERUPTION II ORAL
atmospheric sciences | 14 december 2023
Alexandre Baron, Elizabeth Asher, Valentin Duflot,...
The January 2022 Hunga Tonga Hunga Haapai (HTHH) phreatoplinian eruption produced a cascade of unexpected atmospheric effects. This standout explosiv...
View Abstract
The role of tropical upwelling in recent lower stratospheric ozone trends
STRATOSPHERIC AND TROPOSPHERIC COMPOSITION CHANGES: OBSERVATIONS AND MODELING OF SPECIAL EVENTS, FEEDBACK MECHANISMS, AND LONG-TERM TRENDS II ORAL
atmospheric sciences | 13 december 2023
Sean M. Davis, Nicholas Davis, Robert W. Portmann,...
Several satellite-based analyses have reported that lower stratospheric ozone has declined since the late 1990s. In contrast to this, lower stratosphe...
View Abstract
Stratosphere Water Vapor Observations from Satellite, Balloon and Aircraft: What Have We Learned over the Past 75 Years?
ATMOSPHERIC SCIENCES 2023 FELLOWS
atmospheric sciences | 13 december 2023
Karen H. Rosenlof
The first stratospheric water vapor measurements were made using an aircraft frost point hygrometer in 1943; while originally intended to assess when ...
View Abstract
Rapid response in-situ SO2 measurements of the Hunga Tonga eruption plume
ATMOSPHERIC AND CLIMATE IMPACTS OF THE HUNGA TONGA VOLCANIC ERUPTION I POSTER
atmospheric sciences | 12 december 2023
Paul J. Walter, Sergio L. Alvarez, James H. Flynn,...
The 15 January 2022 Hunga Tonga-Hunga Haˈapai (HTHH) eruption led to the Tonga volcano Rapid Response Experiment (TR2Ex) deployment to the Maïdo Obser...
View Abstract