A posteriori calculation of delta O-18 and delta D in atmospheric water vapour from ground-based near-infrared FTIR retrievals of (H2O)-O-16, (H2O)-O-18, and (HDO)-O-16 / Rokotyan N. V.,Zakharov V. I.,Gribanov K. G.,Schneider M.,Breon F-M,Jouzel J.,Imasu R.,Werner M.,Butzin M.,Petri C.,Warneke T.,Notholt J. // ATMOSPHERIC MEASUREMENT TECHNIQUES. - 2014. - V. 7, l. 8. - P. 2567-2580.

ISSN/EISSN:

1867-1381 / 1867-8548

Type:

Article

Abstract:

This paper investigates the scientific value of retrieving (H2O)-O-18 and HDO columns in addition to (H2O)-O-16 columns from high-resolution ground-based near-infrared spectra. We present a set of refined (H2O)-O-16, (H2O)-O-18, and HDO spectral windows. The retrieved (H2O)-O-16, (H2O)-O-18, and HDO columns are used for an a posteriori calculation of columnar delta D and delta O-18. We estimate the uncertainties for the so-calculated columnar delta D and delta O-18 values. These estimations include uncertainties due to the measurement noise, errors in the a priori data, and uncertainties in spectroscopic parameters. Time series of delta O-18 obtained from ground-based FTIR (Fourier transform infrared) spectra are presented for the first time. For our study we use a full physics isotopic general circulation model (ECHAM5-wiso). We show that the full physics simulation of HDO and (H2O)-O-18 can already be reasonably predicted from the (H2O)-O-16 columns by a simple linear regression model (scatter values between full physics and linear regression simulations are 35 and 4 for HDO and (H2O)-O-18, respectively). We document that the columnar delta D and delta O-18 values as calculated a posteriori from the retrievals of (H2O)-O-16, (H2O)-O-18, and HDO show a better agreement with the ECHAM5-wiso simulation than the delta D and delta O-18 values as calculated from the (H2O)-O-16 retrievals and the simple linear regression model. This suggests that the (H2O)-O-18 and HDO column retrievals add complementary information to the (H2O)-O-16 retrievals. However, these data have to be used carefully, because of the different vertical sensitivity of the (H2O)-O-16, (H2O)-O-18, and HDO columnar retrievals. Furthermore, we have to note that the retrievals use reanalysis humidity profiles as a priori input and the results are thus not independent of the reanalysis data.

Author keywords:

GENERAL-CIRCULATION MODEL; COLUMN OBSERVING NETWORK; ISOTOPIC COMPOSITION; IMG/ADEOS DATA; CM(-1) REGION; LINE PARAMETERS; HDO/H2O RATIOS; CLIMATE; PRECIPITATION; SPECTRA

DOI:

10.5194/amt-7-2567-2014

Web of Science ID:

ISI:000341605200012

Соавторы в МНС:

Другие поля

Поле	Значение
Publisher	COPERNICUS GESELLSCHAFT MBH
Address	BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
Language	English
EISSN	1867-8548
Keywords-Plus	GENERAL-CIRCULATION MODEL; COLUMN OBSERVING NETWORK; ISOTOPIC COMPOSITION; IMG/ADEOS DATA; CM(-1) REGION; LINE PARAMETERS; HDO/H2O RATIOS; CLIMATE; PRECIPITATION; SPECTRA
Research-Areas	Meteorology \& Atmospheric Sciences
Web-of-Science-Categories	Meteorology \& Atmospheric Sciences
Author-Email	nikita.rokotyan@urfu.ru
ResearcherID-Numbers	Werner, Martin/C-8067-2014 Gribanov, Konstantin/P-3479-2015 Breon, Francois-Marie/M-4639-2016 Schneider, Matthias/B-1441-2013 Notholt, Justus/P-4520-2016
ORCID-Numbers	Werner, Martin/0000-0002-6473-0243 Breon, Francois-Marie/0000-0003-2128-739X Notholt, Justus/0000-0002-3324-885X
Funding-Acknowledgement	Russian Government {[}11.G34.31.0064]; RFBR {[}12-01-00801-a]; European Commission within the research project NORS; European Research Council under the European Community's Seventh Framework Programme (FP7)/ERC {[}256961]
Funding-Text	This research at Ural Federal University was supported by the grant from the Russian Government 11.G34.31.0064 (WSIBISO Project) and by the RFBR grant 12-01-00801-a.; Financial support by the European Commission within the research project NORS is acknowledged.; The project MUSICA is funded by the European Research Council under the European Community's Seventh Framework Programme (FP7/2007-2013)/ERC, grant agreement no. 256961.
Number-of-Cited-References	72
Usage-Count-Since-2013	20
Journal-ISO	Atmos. Meas. Tech.
Doc-Delivery-Number	AO8LE