Surface radiative fluxes over the pan-Arctic land region:Variability and trends
Surface radiative fluxes are a key driver of the land surface hydrological cycle, but because in situ measurements are sparse, relatively little attention has been focused on their space-time variations. Recent satellite data and atmospheric model reanalysis products have resulted in data sets that...
Published in: | Journal of Geophysical Research |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2010
|
Subjects: | |
Online Access: | https://eprints.lancs.ac.uk/id/eprint/89423/ https://doi.org/10.1029/2010JD014402 |
id |
ftulancaster:oai:eprints.lancs.ac.uk:89423 |
---|---|
record_format |
openpolar |
spelling |
ftulancaster:oai:eprints.lancs.ac.uk:89423 2023-08-27T04:03:37+02:00 Surface radiative fluxes over the pan-Arctic land region:Variability and trends Shi, Xiaogang Wild, Martin Lettenmaier, Dennis P. 2010-11-16 https://eprints.lancs.ac.uk/id/eprint/89423/ https://doi.org/10.1029/2010JD014402 unknown Shi, Xiaogang and Wild, Martin and Lettenmaier, Dennis P. (2010) Surface radiative fluxes over the pan-Arctic land region:Variability and trends. Journal of Geophysical Research, 115 (D22). ISSN 0148-0227 Journal Article PeerReviewed 2010 ftulancaster https://doi.org/10.1029/2010JD014402 2023-08-03T22:32:23Z Surface radiative fluxes are a key driver of the land surface hydrological cycle, but because in situ measurements are sparse, relatively little attention has been focused on their space-time variations. Recent satellite data and atmospheric model reanalysis products have resulted in data sets that predict most or all terms in the surface energy budget and offer the opportunity to investigate variations in surface radiative fluxes. This study contributes the NASA Energy and Water Cycle Study (NEWS), which is intended to improve estimates of the terrestrial energy budget components for the hydrologic and ecological communities. We analyzed surface downward shortwave (DSW) and longwave radiation (DLW) and albedo over the pan-Arctic domain from (1) the European Centre for Medium-Range Weather Forecast (ECMWF) 40-Year Reanalysis (ERA-40), (2) the ECMWF Interim Reanalysis (ERA-Interim), (3) the International Satellite Cloud Climatology Project-Flux Data (ISCCP-FD), and (4) a Temperature Index (TIND) scheme for the period from 1984 to 2006. As compared with in situ measurements, the reanalysis products provide better estimates of the DSW diurnal cycle than do the satellite product and temperature index scheme simulation. At the regional scale, all data sets have similar temporal patterns except for DLW in ISCCP and snow season albedo. In terms of dominant spatial variability, all data sets show large variability in the pan-Arctic. In addition, DSW and DLW show a similar latitudinal gradient. However, the difference in albedo suggests a need of improvement for the reanalysis products. For a small number of stations with relatively long records, we analyzed long-term trends in DSW and found a turning point between 1985 and 1990. Before that, a dimming period exists, whereas brightening occurred thereafter. Article in Journal/Newspaper albedo Arctic Arctic Lancaster University: Lancaster Eprints Arctic Tind ENVELOPE(12.997,12.997,67.884,67.884) Journal of Geophysical Research 115 D22 |
institution |
Open Polar |
collection |
Lancaster University: Lancaster Eprints |
op_collection_id |
ftulancaster |
language |
unknown |
description |
Surface radiative fluxes are a key driver of the land surface hydrological cycle, but because in situ measurements are sparse, relatively little attention has been focused on their space-time variations. Recent satellite data and atmospheric model reanalysis products have resulted in data sets that predict most or all terms in the surface energy budget and offer the opportunity to investigate variations in surface radiative fluxes. This study contributes the NASA Energy and Water Cycle Study (NEWS), which is intended to improve estimates of the terrestrial energy budget components for the hydrologic and ecological communities. We analyzed surface downward shortwave (DSW) and longwave radiation (DLW) and albedo over the pan-Arctic domain from (1) the European Centre for Medium-Range Weather Forecast (ECMWF) 40-Year Reanalysis (ERA-40), (2) the ECMWF Interim Reanalysis (ERA-Interim), (3) the International Satellite Cloud Climatology Project-Flux Data (ISCCP-FD), and (4) a Temperature Index (TIND) scheme for the period from 1984 to 2006. As compared with in situ measurements, the reanalysis products provide better estimates of the DSW diurnal cycle than do the satellite product and temperature index scheme simulation. At the regional scale, all data sets have similar temporal patterns except for DLW in ISCCP and snow season albedo. In terms of dominant spatial variability, all data sets show large variability in the pan-Arctic. In addition, DSW and DLW show a similar latitudinal gradient. However, the difference in albedo suggests a need of improvement for the reanalysis products. For a small number of stations with relatively long records, we analyzed long-term trends in DSW and found a turning point between 1985 and 1990. Before that, a dimming period exists, whereas brightening occurred thereafter. |
format |
Article in Journal/Newspaper |
author |
Shi, Xiaogang Wild, Martin Lettenmaier, Dennis P. |
spellingShingle |
Shi, Xiaogang Wild, Martin Lettenmaier, Dennis P. Surface radiative fluxes over the pan-Arctic land region:Variability and trends |
author_facet |
Shi, Xiaogang Wild, Martin Lettenmaier, Dennis P. |
author_sort |
Shi, Xiaogang |
title |
Surface radiative fluxes over the pan-Arctic land region:Variability and trends |
title_short |
Surface radiative fluxes over the pan-Arctic land region:Variability and trends |
title_full |
Surface radiative fluxes over the pan-Arctic land region:Variability and trends |
title_fullStr |
Surface radiative fluxes over the pan-Arctic land region:Variability and trends |
title_full_unstemmed |
Surface radiative fluxes over the pan-Arctic land region:Variability and trends |
title_sort |
surface radiative fluxes over the pan-arctic land region:variability and trends |
publishDate |
2010 |
url |
https://eprints.lancs.ac.uk/id/eprint/89423/ https://doi.org/10.1029/2010JD014402 |
long_lat |
ENVELOPE(12.997,12.997,67.884,67.884) |
geographic |
Arctic Tind |
geographic_facet |
Arctic Tind |
genre |
albedo Arctic Arctic |
genre_facet |
albedo Arctic Arctic |
op_relation |
Shi, Xiaogang and Wild, Martin and Lettenmaier, Dennis P. (2010) Surface radiative fluxes over the pan-Arctic land region:Variability and trends. Journal of Geophysical Research, 115 (D22). ISSN 0148-0227 |
op_doi |
https://doi.org/10.1029/2010JD014402 |
container_title |
Journal of Geophysical Research |
container_volume |
115 |
container_issue |
D22 |
_version_ |
1775356935593263104 |