GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 2020-2024  (1)
Document type
Language
Years
Year
  • 1
    Publication Date: 2023-07-03
    Description: Measuring the Earth energy imbalance (EEI) at the top of the atmosphere, is challenging as it is a globally integrated variable whose variations are small (0.5-1 W.m−2) compared to the amount of energy entering the climate system (~ 340 W/m²). Accuracies better than 0.1 W/m² are needed to evaluate the temporal variations of the EEI at decadal and longer time-scales. The CERES experiment provides EEI time variations with a typical uncertainty of ± 0.1 W/m² and shows a trend in EEI of 0.50 +/- 0.47 W/m² per decade over the period 2005-2019.The combination of space altimetry and space gravimetry measurements provides an estimate of the global ocean heat content (GOHC) change which is an accurate proxy of EEI (because 〉90% of the excess of energy stored in response to the EEI is accumulated in the ocean in the form of heat). In Marti et al. (2021), the GOHC was estimated at global scales based on the combination of space gravimetry and altimetry measurements over 2002-2016. Changes in the EEI were then derived with realistic estimates of its uncertainty.Here we present the improvements brought to the GOHC and EEI over an extended period (2002-2021), such as the calculation of the expansion efficiency of heat over the total water column, the improvement of barystatic sea level change solution, the empirical correction of the wet tropospheric correction of Jason-3 altimeter measurements (Barnoud et al., 2022).The space geodetic GOHC-EEI product based on space gravimetry and altimetry is available on AVISO at https://doi.org/10.24400/527896/a01-2020.003.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...