Potential improvements in global carbon flux estimates from a network of laser heterodyne radiometer measurements of column carbon dioxide
We present observing system simulation experiments (OSSEs) to evaluate the impact of a proposed network of ground-based miniaturized laser heterodyne radiometer (mini-LHR) instruments that measure atmospheric column-averaged carbon dioxide ( XCO 2 ) with a 1 ppm precision. A particular strength of t...
Published in: | Atmospheric Measurement Techniques |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2019
|
Subjects: | |
Online Access: | https://doi.org/10.5194/amt-12-2579-2019 https://doaj.org/article/e037c43ee98247eeab0651499a595e24 |
id |
ftdoajarticles:oai:doaj.org/article:e037c43ee98247eeab0651499a595e24 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:e037c43ee98247eeab0651499a595e24 2023-05-15T13:07:10+02:00 Potential improvements in global carbon flux estimates from a network of laser heterodyne radiometer measurements of column carbon dioxide P. I. Palmer E. L. Wilson G. L. Villanueva G. Liuzzi L. Feng A. J. DiGregorio J. Mao L. Ott B. Duncan 2019-05-01T00:00:00Z https://doi.org/10.5194/amt-12-2579-2019 https://doaj.org/article/e037c43ee98247eeab0651499a595e24 EN eng Copernicus Publications https://www.atmos-meas-tech.net/12/2579/2019/amt-12-2579-2019.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 doi:10.5194/amt-12-2579-2019 1867-1381 1867-8548 https://doaj.org/article/e037c43ee98247eeab0651499a595e24 Atmospheric Measurement Techniques, Vol 12, Pp 2579-2594 (2019) Environmental engineering TA170-171 Earthwork. Foundations TA715-787 article 2019 ftdoajarticles https://doi.org/10.5194/amt-12-2579-2019 2022-12-31T12:20:07Z We present observing system simulation experiments (OSSEs) to evaluate the impact of a proposed network of ground-based miniaturized laser heterodyne radiometer (mini-LHR) instruments that measure atmospheric column-averaged carbon dioxide ( XCO 2 ) with a 1 ppm precision. A particular strength of this passive measurement approach is its insensitivity to clouds and aerosols due to its direct sun pointing and narrow field of view (0.2 ∘ ). Developed at the NASA Goddard Space Flight Center (GSFC), these portable, low-cost mini-LHR instruments were designed to operate in tandem with the sun photometers used by the AErosol RObotic NETwork (AERONET). This partnership allows us to leverage the existing framework of AERONET's global ground network of more than 500 sites as well as providing simultaneous measurements of aerosols that are known to be a major source of error in retrievals of XCO 2 from passive nadir-viewing satellite observations. We show, using the global 3-D GEOS-Chem chemistry transport model, that a deployment of 50 mini-LHRs at strategic (but not optimized) AERONET sites significantly improves our knowledge of global and regional land-based CO 2 fluxes. This improvement varies seasonally and ranges 58 %–81 % over southern lands, 47 %–76 % over tropical lands, 71 %–92 % over northern lands, and 64 %–91 % globally. We also show significant added value from combining mini-LHR instruments with the existing ground-based NOAA flask network. Collectively, these data result in improved a posteriori CO 2 flux estimates on spatial scales of ∼10 km 2 , especially over North America and Europe, where the ground-based networks are densest. Our studies suggest that the mini-LHR network could also play a substantive role in reducing carbon flux uncertainty in Arctic and tropical systems by filling in geographical gaps in measurements left by ground-based networks and space-based observations. A realized network would also provide necessary data for the quinquennial global stocktakes that form part of the Paris ... Article in Journal/Newspaper Aerosol Robotic Network Arctic Directory of Open Access Journals: DOAJ Articles Arctic Atmospheric Measurement Techniques 12 4 2579 2594 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 |
spellingShingle |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 P. I. Palmer E. L. Wilson G. L. Villanueva G. Liuzzi L. Feng A. J. DiGregorio J. Mao L. Ott B. Duncan Potential improvements in global carbon flux estimates from a network of laser heterodyne radiometer measurements of column carbon dioxide |
topic_facet |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 |
description |
We present observing system simulation experiments (OSSEs) to evaluate the impact of a proposed network of ground-based miniaturized laser heterodyne radiometer (mini-LHR) instruments that measure atmospheric column-averaged carbon dioxide ( XCO 2 ) with a 1 ppm precision. A particular strength of this passive measurement approach is its insensitivity to clouds and aerosols due to its direct sun pointing and narrow field of view (0.2 ∘ ). Developed at the NASA Goddard Space Flight Center (GSFC), these portable, low-cost mini-LHR instruments were designed to operate in tandem with the sun photometers used by the AErosol RObotic NETwork (AERONET). This partnership allows us to leverage the existing framework of AERONET's global ground network of more than 500 sites as well as providing simultaneous measurements of aerosols that are known to be a major source of error in retrievals of XCO 2 from passive nadir-viewing satellite observations. We show, using the global 3-D GEOS-Chem chemistry transport model, that a deployment of 50 mini-LHRs at strategic (but not optimized) AERONET sites significantly improves our knowledge of global and regional land-based CO 2 fluxes. This improvement varies seasonally and ranges 58 %–81 % over southern lands, 47 %–76 % over tropical lands, 71 %–92 % over northern lands, and 64 %–91 % globally. We also show significant added value from combining mini-LHR instruments with the existing ground-based NOAA flask network. Collectively, these data result in improved a posteriori CO 2 flux estimates on spatial scales of ∼10 km 2 , especially over North America and Europe, where the ground-based networks are densest. Our studies suggest that the mini-LHR network could also play a substantive role in reducing carbon flux uncertainty in Arctic and tropical systems by filling in geographical gaps in measurements left by ground-based networks and space-based observations. A realized network would also provide necessary data for the quinquennial global stocktakes that form part of the Paris ... |
format |
Article in Journal/Newspaper |
author |
P. I. Palmer E. L. Wilson G. L. Villanueva G. Liuzzi L. Feng A. J. DiGregorio J. Mao L. Ott B. Duncan |
author_facet |
P. I. Palmer E. L. Wilson G. L. Villanueva G. Liuzzi L. Feng A. J. DiGregorio J. Mao L. Ott B. Duncan |
author_sort |
P. I. Palmer |
title |
Potential improvements in global carbon flux estimates from a network of laser heterodyne radiometer measurements of column carbon dioxide |
title_short |
Potential improvements in global carbon flux estimates from a network of laser heterodyne radiometer measurements of column carbon dioxide |
title_full |
Potential improvements in global carbon flux estimates from a network of laser heterodyne radiometer measurements of column carbon dioxide |
title_fullStr |
Potential improvements in global carbon flux estimates from a network of laser heterodyne radiometer measurements of column carbon dioxide |
title_full_unstemmed |
Potential improvements in global carbon flux estimates from a network of laser heterodyne radiometer measurements of column carbon dioxide |
title_sort |
potential improvements in global carbon flux estimates from a network of laser heterodyne radiometer measurements of column carbon dioxide |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/amt-12-2579-2019 https://doaj.org/article/e037c43ee98247eeab0651499a595e24 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Aerosol Robotic Network Arctic |
genre_facet |
Aerosol Robotic Network Arctic |
op_source |
Atmospheric Measurement Techniques, Vol 12, Pp 2579-2594 (2019) |
op_relation |
https://www.atmos-meas-tech.net/12/2579/2019/amt-12-2579-2019.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 doi:10.5194/amt-12-2579-2019 1867-1381 1867-8548 https://doaj.org/article/e037c43ee98247eeab0651499a595e24 |
op_doi |
https://doi.org/10.5194/amt-12-2579-2019 |
container_title |
Atmospheric Measurement Techniques |
container_volume |
12 |
container_issue |
4 |
container_start_page |
2579 |
op_container_end_page |
2594 |
_version_ |
1766038144144113664 |