Editorial: Acidification and Hypoxia in Marginal Seas
Editorial: Acidification and Hypoxia in Marginal Seas Read More »
Monitoring & Modeling
Ocean Biogeochemical Signatures of the North Pacific Blob
The global ocean is experiencing major changes due to human-made carbon emissions and climate change, leading to a warming ocean with increasing acidity and declining oxygen. On top of these long-term changes in the ocean are short-term extreme events, such as marine heatwaves. These extreme events quickly change the ocean state and can stress marine
Ocean Biogeochemical Signatures of the North Pacific Blob Read More »
Influence of Winter Subsurface on the Following Summer Variability in Northern California Current System
Temperature variations in the North and tropical Pacific contribute to the predictability of temperatures along the 26.4σ isopycnal layer off the Northern California Current System (N-CCS). Monthly temperature variations at this depth in the N-CCS are related to a linear combination of factors, including North Pacific spice anomalies, and the PDO and ENSO climate indices. However,
Climate downscaling for regional models with a neural network: A Hawaiian example
Global ocean/atmosphere circulation models (GCMs) allow us to better understand and predict the behavior of the ocean and atmosphere at large spatial and temporal scales; however, they may be unsuited for regional studies due to their low spatial resolution. We have developed a method for downscaling GCMs data using an artificial neural network to reconstruct
Climate downscaling for regional models with a neural network: A Hawaiian example Read More »
Characterizing Mean and Extreme Diurnal Variability of Ocean CO2 System Variables Across Marine Environments
Diurnal variability of ocean CO2 system variables is poorly constrained. Here, this variability and its drivers are assessed using 3-h observations collected over 8–140 months at 37 stations located in diverse marine environments. Extreme diurnal variability, that is, when the daily amplitude exceeds the 99th percentile of diurnal variability, is comparable in magnitude to the seasonal amplitude and
Reaching Consensus on Assessments of Ocean Acidification Trends
Scientists are working to establish a common methodology for evaluating rates of change in—and the various mechanisms that affect—acidification across ocean environments. This workshop was funded by NOAA’s Ocean Acidification Program
Reaching Consensus on Assessments of Ocean Acidification Trends Read More »
The Ocean Carbon Response to COVID-Related Emissions Reductions
The decline in global emissions of carbon dioxide due to the COVID-19 pandemic provides a unique opportunity to investigate the sensitivity of the global carbon cycle and climate system to emissions reductions. Recent efforts to study the response to these emissions declines has not addressed their impact on the ocean, yet ocean carbon absorption is
The Ocean Carbon Response to COVID-Related Emissions Reductions Read More »
Quantifying the Atmospheric CO<sub>2</sub> Forcing Effect on Surface Ocean <em>p</em>CO<sub>2</sub> in the North Pacific Subtropical Gyre in the Past Two Decades
Despite the well-recognized importance in understanding the long term impact of anthropogenic release of atmospheric CO2 (its partial pressure named as pCO2air) on surface seawater pCO2 (pCO2sw), it has been difficult to quantify the trends or changing rates of pCO2sw driven by increasing atmospheric CO2 forcing (pCO2swatm_forced) due to its combination with the natural variability of pCO2sw (pCO2swnat_forced) and the requirement of
Ocean acidification status in Pacific Ocean surface seawater in 2020. State of the Climate in 2020, Global Oceans
While the Pacific Ocean north of ~20°S has the lowest column inventory of anthropogenic carbon dioxide (CO2) outside of the Southern Ocean (Gruber et al. 2019), background dissolved inorganic carbon content is high as a result of respiration that occurs in the ocean’s interior and old “ages” of deep Pacific waters. Consequently, the northern Pacific
Ecosystem Status Report of the California Current for 2020-21: A Summary of Ecosystem Indicators Compiled by the California Current Integrated Ecosystem Assessment Team (CCIEA)
This document is a companion to the ecosystem status report (ESR) provided by the California Current Integrated Ecosystem Assessment team (CCIEA team) to the Pacific Fishery Management Council (PFMC) in March of 2021 (Harvey et al. 2021). The CCIEA team provides ESRs annually to PFMC, as one component of the overall CCIEA goal of providing
