When Will the Unprecedented 2022 Summer Heat Waves in Yangtze River Basin Become Normal in a Warming Climate?

Ma, Feng; Yuan, Xing

doi:10.1029/2022gl101946

Cited by 31 publications

(12 citation statements)

References 54 publications

(73 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The extreme heat and drought event in the Yangtze River Basin in China in 2022 has attracted wide attention (Hua et al., 2023; X. Li et al., 2023; Ma & Yuan, 2023; J. Wang, Yan, et al., 2023). Concurrently, the TP experienced both extreme high temperatures and low PRE during the summer of 2022, reaching levels unprecedented since 2000.…”

Section: Discussionmentioning

confidence: 99%

Warm Early Summer Compensated Reduction in Photosynthesis Caused by 2022 Late Summer Extreme Drought Over the Tibetan Plateau

Yan,

Wang,

Wang

et al. 2024

JGR Biogeosciences

View full text Add to dashboard Cite

The Tibetan Plateau (TP) is ecologically delicate, its vegetation highly sensitive to climate variations. In 2022, China endured an unprecedented compound drought‐heatwave, escalating TP's August temperature to a record high since 2000. This study examined this event's impact on TP's photosynthesis using multi‐source satellite‐based products. We demonstrated persistent high temperatures from April to August 2022, accompanied by shifting soil water (SW). Initially moist from April to June, the soil turned notably dry, hitting its lowest point in August. Consequently, early summer witnessed a substantial enhancement in gross primary productivity (GPP) and near‐infrared reflectance of vegetation (NIRv) predominantly due to high temperatures, except for reduction in the eastern and southeastern TP. June recorded the largest positive GPP anomaly since 2000. As summer progressed, severe drought, not high temperatures, dominated, causing obvious negative anomalies in GPP and NIRv, especially in August, concentrated in the central and southwestern TP. Separating the growing season into May–June–July (MJJ) and August–September (AS) revealed a clear contrast. Enhancement in photosynthesis during MJJ compensated the decline in AS, making average positive GPP and weak negative NIRv anomalies in the entire growing season. Specifically, MJJ saw GPP magnitudes of 5.724 TgC mo−1 in FluxSat, 9.491 TgC mo−1 in GPP v2.2 and OCO‐2‐based Solar‐induced chlorophyll fluorescence (GOSIF), and 0.004 in NIRv. Conversely, AS experienced a decline: −4.802 TgC mo−1 in FluxSat, −2.837 TgC mo−1 in GOSIF GPP, and −0.006 in NIRv. This delicate balance underscores the intricate interplay between early growth conditions, subsequent environmental stressors, and vegetation's adaptive responses.

show abstract

Section: Discussionmentioning

confidence: 99%

Warm Early Summer Compensated Reduction in Photosynthesis Caused by 2022 Late Summer Extreme Drought Over the Tibetan Plateau

Yan,

Wang,

Wang

et al. 2024

JGR Biogeosciences

View full text Add to dashboard Cite

show abstract

“…In the summer of 2022, simultaneous drought and heatwave emerged in many regions of China, especially the Yangtze River Basin (YZB). In July and August, the YZB witnessed the strongest heatwave with the highest average temperature and number of high temperature days (maximum temperature >35 • C) since meteorological observations were available in 1961 (Jiang et al 2023, Ma and Yuan 2023, Wang et al 2023b. Approximately 360 million people experienced temperatures exceeding 40 • C at some point during this summer in China (Mallapaty 2022).…”

Section: Introductionmentioning

confidence: 99%

Shift of soil moisture-temperature coupling exacerbated 2022 compound hot-dry event in eastern China

Ni,

Qiu,

Miao

et al. 2024

Environ. Res. Lett.

View full text Add to dashboard Cite

Compound hot-dry events (CHDEs) are among the deadliest climate hazards and are occurring with increasing frequency under global warming. The Yangtze River Basin in China experienced a record-breaking CHDE in the summer of 2022, causing severe damage to human societies and ecosystems. Recent studies have emphasized the role of atmospheric circulation anomalies in driving this event. However, the contribution of land–atmosphere feedback to the development of this event remains unclear. Here, we investigated the impacts of soil moisture-temperature coupling on the development of this concurrent heatwave and drought. We showed that large amounts of surface net radiation were partitioned to sensible heat instead of latent heat as the soil moisture-temperature coupling pattern shifted from energy-limited to water-limited under low soil moisture conditions, forming positive land–atmosphere feedback and leading to unprecedented hot extremes in August. The spatial heterogeneity of hot extremes was also largely modulated by the land–atmosphere coupling strength. Furthermore, enhanced land–atmosphere feedback has played an important role in intensifying CHDEs in this traditional humid region. This study improves the understanding of the development of CHDEs from three aspects, including timing, intensity, and spatial distribution, and enables more effective early warning of CHDEs.

show abstract

“…The prolonged heatwave in 2010 resulted in 55,000 casualties and approximately 30% crop yield losses in Russia (Lau & Kim, 2012). The summers of 2018 and 2022 saw multiple record‐breaking large‐scale heatwaves across the mid‐high latitudes of the NH (Ma and Yuan, 2022; Yiou et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

Phase‐Locked Rossby Wave‐4 Pattern Dominates the 2022‐Like Concurrent Heat Extremes Across the Northern Hemisphere

Yang,

Zeng,

Zhang

et al. 2024

Geophysical Research Letters

View full text Add to dashboard Cite

Concurrent heat extremes (CHEs) are becoming increasingly common in the mid‐high latitudes across the Northern Hemisphere (NH), underscoring the need to comprehend their spatiotemporal characteristics and underlying causes. Here we reveal a phase‐locking behavior in Wave‐4 pattern, particularly after mid‐1990s, giving rise to a prominent CHE mode akin to heat extreme pattern observed in 2022, which swept most NH regions. Wave‐4 pattern significantly amplifies the likelihood of CHEs in Eastern Europe (∼30%), Northeast Asia (∼25%), and northwestern coast of North America (∼15%), while reducing the likelihood in central North America and northern Central Asia. During 1979–2022, the identified pattern accounted for over 69.7% of the trends in heat extremes over the mid‐high latitudes of the NH, directly exposing approximately 333.5 million people to heat extremes. Observations and simulations indicate that radiation anomalies over Eastern European Plain and West Siberian Plain play pivotal roles as primary forcing sources for Wave‐4 pattern.

show abstract

When Will the Unprecedented 2022 Summer Heat Waves in Yangtze River Basin Become Normal in a Warming Climate?

Cited by 31 publications

References 54 publications

Warm Early Summer Compensated Reduction in Photosynthesis Caused by 2022 Late Summer Extreme Drought Over the Tibetan Plateau

Warm Early Summer Compensated Reduction in Photosynthesis Caused by 2022 Late Summer Extreme Drought Over the Tibetan Plateau

Shift of soil moisture-temperature coupling exacerbated 2022 compound hot-dry event in eastern China

Phase‐Locked Rossby Wave‐4 Pattern Dominates the 2022‐Like Concurrent Heat Extremes Across the Northern Hemisphere

Contact Info

Product

Resources

About