DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

The Importance of the Spatial Density of Satellite Measurements for the Retrieval of Spatial Flux Patterns

Marshall, Julia and Kiemle, Christoph and Fix, Andreas (2014) The Importance of the Spatial Density of Satellite Measurements for the Retrieval of Spatial Flux Patterns. AGU Fall Meeting, 15.-19.12.2014, San Francisco.

Full text not available from this repository.


Initial results from GOSAT flux inversions of column-integrated carbon dioxide suggest a significant redistribution of surface fluxes compared to inversions using only surface-based inversions as an observational constraint. New evidence suggests that this redistribution of fluxes is a robust feature, and is related to the increased spatial density of the measurements made available by remote sensing. However GOSAT's rather large measurement footprint and sparse sampling still provide poor coverage over many areas of the globe, particularly regions characterized by consistent cloud cover, such as the tropics, and all passive near-infrared sensors suffer from a seasonal sampling bias due to limited sunlight during high latitude winter. As such, errors in the pattern of retrieved fluxes may still be significant. Active sensors based on lidar do not suffer from the same seasonal (or diurnal) sampling biases, and their exceptionally small instantaneous field of view (~150 m) promises to greatly improve the spatial coverage of the measurements over partially cloudy regions. Using the case of MERLIN, a planned joint French-German lidar mission designed to measure XCH4, the implications of this increased spatial coverage is considered in an inverse modelling framework, and compared to presently available measurement coverage from the surface-based network and GOSAT. The gain in knowledge about the absolute size of the regional methane fluxes, particularly in currently undersampled regions such as the Arctic permafrost zones and tropical wetlands, is quantified.

Item URL in elib:https://elib.dlr.de/92960/
Document Type:Conference or Workshop Item (Speech)
Title:The Importance of the Spatial Density of Satellite Measurements for the Retrieval of Spatial Flux Patterns
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Date:December 2014
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:sources and sinks of greenhouse gases, satellite remote sensing
Event Title:AGU Fall Meeting
Event Location:San Francisco
Event Type:international Conference
Event Dates:15.-19.12.2014
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben LIDAR-Forschung und -Entwicklung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Kiemle, Dr.rer.nat. Christoph
Deposited On:03 Dec 2014 07:27
Last Modified:05 Dec 2014 10:48

Repository Staff Only: item control page

Help & Contact
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.