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Are the TRACE-P measurements representative of the western Pacific during March 2001?

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Are the TRACE-P measurements representative of the western Pacific during March 2001? / Hsu, J ; Prather, M J ; Wild, O ; Sundet, J K ; Isaksen, I S A ; Browell, E V ; Avery, M A ; Sachse, G W .

In: Journal of Geophysical Research: Atmospheres, Vol. 109, No. D2, D02314, 31.01.2004, p. -.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Hsu, J, Prather, MJ, Wild, O, Sundet, JK, Isaksen, ISA, Browell, EV, Avery, MA & Sachse, GW 2004, 'Are the TRACE-P measurements representative of the western Pacific during March 2001?', Journal of Geophysical Research: Atmospheres, vol. 109, no. D2, D02314, pp. -. https://doi.org/10.1029/2003JD004002

APA

Hsu, J., Prather, M. J., Wild, O., Sundet, J. K., Isaksen, I. S. A., Browell, E. V., Avery, M. A., & Sachse, G. W. (2004). Are the TRACE-P measurements representative of the western Pacific during March 2001? Journal of Geophysical Research: Atmospheres, 109(D2), -. [D02314]. https://doi.org/10.1029/2003JD004002

Vancouver

Hsu J, Prather MJ, Wild O, Sundet JK, Isaksen ISA, Browell EV et al. Are the TRACE-P measurements representative of the western Pacific during March 2001? Journal of Geophysical Research: Atmospheres. 2004 Jan 31;109(D2):-. D02314. https://doi.org/10.1029/2003JD004002

Author

Hsu, J ; Prather, M J ; Wild, O ; Sundet, J K ; Isaksen, I S A ; Browell, E V ; Avery, M A ; Sachse, G W . / Are the TRACE-P measurements representative of the western Pacific during March 2001?. In: Journal of Geophysical Research: Atmospheres. 2004 ; Vol. 109, No. D2. pp. -.

Bibtex

@article{283a312e09164a18bfe98778748eb42b,
title = "Are the TRACE-P measurements representative of the western Pacific during March 2001?",
abstract = "[1] Observations of CO and O-3 from the Transport and Chemical Evolution over the Pacific (TRACE-P) campaign are compared with modeled distributions from the FRSGC/ UCI CTM driven by the Oslo T63L40 ECMWF forecast meteorology. The model-measurement comparison is made within the context of how well the TRACE-P observations represent the springtime chemistry and ozone distributions over eastern Asia and the western Pacific in March 2001 and uses the four-dimensional (4-D) extended domain from the model to provide unbiased statistics. A key question is whether the limited sampling density or mission strategy led to a statistically biased sample. To address this question, we examine a diverse range of statistical analyses of the observations of CO and O-3. The middle percentiles of the cumulative probability functions for CO in the free troposphere are representative ( and reproduced by the CTM), but those in the boundary layer are not. The frequency of low-CO, stratospheric influence is well matched along flight tracks but is atypical of the extended domain. The percentiles of the latitude-by-height distribution of lidar O-3 show how the CTM reproduces the nonrepresentative clumpy nature of the observations but has too low a tropopause about the jet region (30-35N). Adaptive kernel estimation of the 2-D probability density of O-3-CO correlations shows a very good simulation of two different chemical regimes ( stratospheric and polluted) that is quite different from the extended domain but also highlights the failure to predict CO > 400 ppb. Empirical orthogonal function analysis of the O-3 vertical profiles shows how six EOFs can effectively describe the 4-D structures of O-3 over this entire domain. The latitude-by-longitude maps of the principal components provide an excellent test of the CTM simulation along flight tracks and clearly show the unique sampling of O-3 events by the TRACE-P flights. In many cases the ability of the model to simulate the nonrepresentative observations implies a clear skill in matching the unique meteorological and chemical features of the region.",
keywords = "TRACE-P measurements, CTM stimulations, representativeness, sampling bias, ozone and CO2 comparisons, EOF, PDFs, ASIAN CONTINENTAL OUTFLOW, NORTHERN-HEMISPHERE, TROPOSPHERIC OZONE, ARCTIC OSCILLATION, CHEMICAL EVOLUTION, CARBON-MONOXIDE, CLIMATE-CHANGE, TRANSPORT, VARIABILITY, REGIMES",
author = "J Hsu and Prather, {M J} and O Wild and Sundet, {J K} and Isaksen, {I S A} and Browell, {E V} and Avery, {M A} and Sachse, {G W}",
year = "2004",
month = jan,
day = "31",
doi = "10.1029/2003JD004002",
language = "English",
volume = "109",
pages = "--",
journal = "Journal of Geophysical Research: Atmospheres",
issn = "0747-7309",
publisher = "Wiley-Blackwell Publishing Ltd",
number = "D2",

}

RIS

TY - JOUR

T1 - Are the TRACE-P measurements representative of the western Pacific during March 2001?

AU - Hsu, J

AU - Prather, M J

AU - Wild, O

AU - Sundet, J K

AU - Isaksen, I S A

AU - Browell, E V

AU - Avery, M A

AU - Sachse, G W

PY - 2004/1/31

Y1 - 2004/1/31

N2 - [1] Observations of CO and O-3 from the Transport and Chemical Evolution over the Pacific (TRACE-P) campaign are compared with modeled distributions from the FRSGC/ UCI CTM driven by the Oslo T63L40 ECMWF forecast meteorology. The model-measurement comparison is made within the context of how well the TRACE-P observations represent the springtime chemistry and ozone distributions over eastern Asia and the western Pacific in March 2001 and uses the four-dimensional (4-D) extended domain from the model to provide unbiased statistics. A key question is whether the limited sampling density or mission strategy led to a statistically biased sample. To address this question, we examine a diverse range of statistical analyses of the observations of CO and O-3. The middle percentiles of the cumulative probability functions for CO in the free troposphere are representative ( and reproduced by the CTM), but those in the boundary layer are not. The frequency of low-CO, stratospheric influence is well matched along flight tracks but is atypical of the extended domain. The percentiles of the latitude-by-height distribution of lidar O-3 show how the CTM reproduces the nonrepresentative clumpy nature of the observations but has too low a tropopause about the jet region (30-35N). Adaptive kernel estimation of the 2-D probability density of O-3-CO correlations shows a very good simulation of two different chemical regimes ( stratospheric and polluted) that is quite different from the extended domain but also highlights the failure to predict CO > 400 ppb. Empirical orthogonal function analysis of the O-3 vertical profiles shows how six EOFs can effectively describe the 4-D structures of O-3 over this entire domain. The latitude-by-longitude maps of the principal components provide an excellent test of the CTM simulation along flight tracks and clearly show the unique sampling of O-3 events by the TRACE-P flights. In many cases the ability of the model to simulate the nonrepresentative observations implies a clear skill in matching the unique meteorological and chemical features of the region.

AB - [1] Observations of CO and O-3 from the Transport and Chemical Evolution over the Pacific (TRACE-P) campaign are compared with modeled distributions from the FRSGC/ UCI CTM driven by the Oslo T63L40 ECMWF forecast meteorology. The model-measurement comparison is made within the context of how well the TRACE-P observations represent the springtime chemistry and ozone distributions over eastern Asia and the western Pacific in March 2001 and uses the four-dimensional (4-D) extended domain from the model to provide unbiased statistics. A key question is whether the limited sampling density or mission strategy led to a statistically biased sample. To address this question, we examine a diverse range of statistical analyses of the observations of CO and O-3. The middle percentiles of the cumulative probability functions for CO in the free troposphere are representative ( and reproduced by the CTM), but those in the boundary layer are not. The frequency of low-CO, stratospheric influence is well matched along flight tracks but is atypical of the extended domain. The percentiles of the latitude-by-height distribution of lidar O-3 show how the CTM reproduces the nonrepresentative clumpy nature of the observations but has too low a tropopause about the jet region (30-35N). Adaptive kernel estimation of the 2-D probability density of O-3-CO correlations shows a very good simulation of two different chemical regimes ( stratospheric and polluted) that is quite different from the extended domain but also highlights the failure to predict CO > 400 ppb. Empirical orthogonal function analysis of the O-3 vertical profiles shows how six EOFs can effectively describe the 4-D structures of O-3 over this entire domain. The latitude-by-longitude maps of the principal components provide an excellent test of the CTM simulation along flight tracks and clearly show the unique sampling of O-3 events by the TRACE-P flights. In many cases the ability of the model to simulate the nonrepresentative observations implies a clear skill in matching the unique meteorological and chemical features of the region.

KW - TRACE-P measurements

KW - CTM stimulations

KW - representativeness

KW - sampling bias

KW - ozone and CO2 comparisons

KW - EOF

KW - PDFs

KW - ASIAN CONTINENTAL OUTFLOW

KW - NORTHERN-HEMISPHERE

KW - TROPOSPHERIC OZONE

KW - ARCTIC OSCILLATION

KW - CHEMICAL EVOLUTION

KW - CARBON-MONOXIDE

KW - CLIMATE-CHANGE

KW - TRANSPORT

KW - VARIABILITY

KW - REGIMES

U2 - 10.1029/2003JD004002

DO - 10.1029/2003JD004002

M3 - Journal article

VL - 109

SP - -

JO - Journal of Geophysical Research: Atmospheres

JF - Journal of Geophysical Research: Atmospheres

SN - 0747-7309

IS - D2

M1 - D02314

ER -