Predicting April Precipitation in the Northwestern United States Based on Arctic Stratospheric Ozone and Local Circulation

Ma, Xuan; Xie, Fei

doi:10.3389/feart.2020.00056

Cited by 3 publications

(2 citation statements)

References 63 publications

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“…Previous studies have highlighted the delayed climatic influence of Arctic ozone on the mid-and high-latitude Northern Hemisphere [39,40,44,47,56,57,61,73,74], a pattern that can be explained via the interaction between the ASO and tropospheric circulation. It has been shown that the decrease in Arctic total column ozone (TCO) induces a decrease in shortwave heating [47,61,[73][74][75][76], and thereby favors cooling and strengthening of the Arctic SPV (stratospheric polar vortex). Anomalies in March ASO could result in a circulation anomaly (North Pacific Oscillation, NPO) over the North Pacific, and the process and mechanism of ASO affecting the NPO has been analyzed in detail in previ- Table 1.…”

Section: The Potential Mechanisms Linking Aso and Penamentioning

confidence: 99%

“…The Potential Mechanisms Linking ASO and PENA Previous studies have highlighted the delayed climatic influence of Arctic ozone on the mid-and high-latitude Northern Hemisphere [39,40,44,47,56,57,61,73,74], a pattern that can be explained via the interaction between the ASO and tropospheric circulation. It has been shown that the decrease in Arctic total column ozone (TCO) induces a decrease in shortwave heating [47,61,[73][74][75][76], and thereby favors cooling and strengthening of the Arctic SPV (stratospheric polar vortex). Anomalies in March ASO could result in a circulation anomaly (North Pacific Oscillation, NPO) over the North Pacific, and the process and mechanism of ASO affecting the NPO has been analyzed in detail in previous studies.…”

Section: Positive Anomaly Events Negative Anomaly Eventsmentioning

confidence: 99%

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Identifying a Leading Predictor of Arctic Stratospheric Ozone for April Precipitation in Eastern North America

Xie

Chen

et al. 2022

Remote Sensing

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An analysis of the relationship between changes in Arctic stratospheric ozone (ASO) and precipitation in eastern North America (38°–54°N, 65°–87°W; PENA) was performed using observational and reanalysis data coupled with the Whole Atmosphere Community Climate Model version 4 (WACCM4). We found that March ASO exhibits a strong correlation with PENA in April, indicating that the one-month leading ASO exerts a potentially strong impact on April PENA. Changes in tropospheric circulation over the North Pacific and North America can be influenced by ASO anomalies via stratosphere–troposphere interactions. Increased ASO typically results in the transport of drier, colder air from northwest to eastern North America and suppresses local convective activity by enhancing regional downwelling. These conditions lead to a decrease in regional atmospheric water vapor content (1000–600 hPa). Abnormally high ASO may therefore suppress precipitation, whereas abnormally low ASO serves to enhance precipitation, and the finding is supported by WACCM4 simulations incorporating these ASO anomaly signals. We also present an ASO-based statistical linear model for predicting April PENA. Results confirm that the linear model reproduces April PENA for both training and testing periods, based on March ASO, demonstrating the reliability and stability of this linear model. This study verifies that ASO is a viable predictor for projecting April PENA and thus improving forecasts of regional seasonal precipitation.

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Section: The Potential Mechanisms Linking Aso and Penamentioning

confidence: 99%

Section: Positive Anomaly Events Negative Anomaly Eventsmentioning

confidence: 99%

Identifying a Leading Predictor of Arctic Stratospheric Ozone for April Precipitation in Eastern North America

Xie

Chen

et al. 2022

Remote Sensing

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Modulation of a long-lasting extreme cold event in Siberia by a minor sudden stratospheric warming and the dynamical mechanism involved

Liu

Guan

2022

Clim Dyn

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Previous studies have paid much attention to the impact of major sudden stratospheric warming (SSW) events on the tropospheric circulation. However, the attention to the modulation of minor SSW events on the extreme cold events is limited. In this study, the extreme cold event in Siberia in the winter of 2000/2001, the longest-lasting one from 1980/1981 to 2019/2020, and its linkages to the minor SSW event have been examined. Our results show that the largest cooling occurred in Siberia during 30 December 2000 − 10 January 2001, and then the cooling weakened and migrated to Northeast China from 11 to 18 January 2001. During the recovery stage of this minor SSW event, the stratospheric polar vortex gradually strengthened, along with strengthening of the zonal winds over the Ural region. The vertical distribution of positive zonal wind anomalies in the Ural region favored the reflection of stratospheric planetary wave in the Atlantic-Euro and Siberia region. The changes of planetary wave propagation were beneficial to the strengthening of the trough in the Atlantic-Euro and Siberia region during 26 December − 10 January, which facilitated the growth and maintenance of the Ural ridge in the same period by strengthening the meridional flow. The strengthened Ural ridge resulted in the extreme cold event breaking out and lasting from 30 December to 10 January. Because the stratospheric polar vortex did not continue to strengthen and a new ridge generated in the Atlantic region during 11 − 18 January, the Ural ridge decayed and the cold air moved to Northeast China.

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Ozone Concentration Forecasting Based on Artificial Intelligence Techniques: A Systematic Review

Yafouz

Ahmed

Zaini

et al. 2021

Water Air Soil Pollut

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Predicting April Precipitation in the Northwestern United States Based on Arctic Stratospheric Ozone and Local Circulation

Cited by 3 publications

References 63 publications

Identifying a Leading Predictor of Arctic Stratospheric Ozone for April Precipitation in Eastern North America

Identifying a Leading Predictor of Arctic Stratospheric Ozone for April Precipitation in Eastern North America

Modulation of a long-lasting extreme cold event in Siberia by a minor sudden stratospheric warming and the dynamical mechanism involved

Ozone Concentration Forecasting Based on Artificial Intelligence Techniques: A Systematic Review

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