Optimizing the key parameter to accelerate the recovery of AMOC under a rapid increase of greenhouse gas forcing
Available online 21 April 2024
Atlantic Meridional Overturning Circulation (AMOC) plays a central role in long-term climate variations through its heat and freshwater transports, which can collapse under a rapid increase of greenhouse...
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Increase in the variability of terrestrial carbon uptake in response to enhanced future ENSO modulation
Available online 19 April 2024
El Niño–Southern Oscillation (ENSO) is a major driver of climate change in middle and low latitudes and thus strongly influences the terrestrial carbon cycle through land–air interaction. Both the ENSO...
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Application of the improved dung beetle optimizer, muti-head attention and hybrid deep learning algorithms to groundwater depth prediction in the Ningxia area, China
Available online 16 April 2024
Due to the lack of accurate data and complex parameterization, the prediction of groundwater depth is a challenge for numerical models. Machine learning can effectively solve this issue and has been...
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Impact of ocean data assimilation on the seasonal forecast of the 2014/15 marine heatwave in the Northeast Pacific Ocean
Available online 16 April 2024
A remarkable marine heatwave, known as the “Blob”, occurred in the Northeast Pacific Ocean from late 2013 to early 2016, which displayed strong warm anomalies extending from the surface to a depth of...
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Impacts of the annual cycle of background SST in the tropical Pacific on the phase and amplitude of ENSO
Available online 16 April 2024
The dominant annual cycle of sea surface temperature (SST) in the tropical Pacific exhibits an antisymmetric mode, which explains 83.4% total variance, and serves as a background of El Niño–Southern...
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A study on the simulation of carbon and water fluxes of Dangxiong alpine meadow and its response to climate change
Available online 15 April 2024
全球气候变化对青藏高原生态系统产生了深远影响, 暖湿化背景下青藏高原植被碳,水通量变化趋势值得关注.高寒草甸是青藏高原最主要的植被类型之一, 为理解青藏高原当雄地区高寒草甸生态系统碳,水通量,水分利用效率及其对未来气候变化的响应, 本研究利用PEST和DDS两种参数率定方法优化Biome-BGC模型, 进而模拟2000-2019年当雄站的总初级生产力 (GPP) 和蒸散量 (ET) .研究结果表明:DDS参数率定方法具有更优的性能.GPP和ET在研究时段内呈上升趋势,...
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Arctic sea-ice extent: No record minimum in 2023 or recent years
Available online 13 April 2024
Arctic sea-ice extent reaches its minimum each year in September. On 11 September last year (2023) the minimum was 4.969 million square kilometers (mill.km2). This was not a record low, which occurred...
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Response of warm season secondary pollutants to emissions and meteorology in the North China Plain region during 2018–2022
Available online 2 April 2024
Air quality in China has continued to improve since 2013, although severe pollution events still occur over the North China Plain (NCP). It is noticeable that contributions from secondary pollutants...
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Pollution characteristics of peroxyacetyl nitrate in karst areas in Southwest China
March 2024
In recent years, the issue of photochemical pollution in the Guangxi region of China has escalated considerably. However, there remains a notable dearth of related research in this area. Peroxyacetyl...
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Enhanced rainfall in North China in July 2021: Role of the North Pacific SST gradient
March 2024
The rainfall over North China (NC) in July 2021 was the most since 1980, and coincided with a meridional gradient of sea surface temperature anomaly (MGSSTA) in the Pacific. The present study shows...
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Impacts of monsoon break events in the western North Pacific on the cross-equatorial flows over the Maritime Continent
March 2024
This study examines the possible impacts of western North Pacific (WNP) monsoon break events on the cross-equatorial flows (CEFs) over the Maritime Continent using daily data from ERA5 for 1979–2020....
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Trend in seasonal amplitude of northern net ecosystem production: Simulated results from IAP DGVM in CAS-ESM2
March 2024
Net ecosystem production (NEP) over northern latitudes has an obvious seasonal variation, which dominantly drives the seasonal variation in atmospheric CO2. Investigating these carbon processes and...
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A comparative study of the land–atmosphere energy and water exchanges over the Tibetan Plateau and the Yangtze River Region
March 2024
A comprehensive understanding of energy and water cycle characteristics in different regions is crucial for studying local land–atmosphere interactions and predicting regional weather and climate change....
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Climate prediction of the seasonal sea-ice early melt onset in the Bering Sea
March 2024
Based on the impact of large-scale circulation anomalies on sea-ice melting, this paper develops a statistical forecasting model for the seasonal sea-ice early melt onset (EMO) in the Bering Sea using...
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Role of land–atmosphere coupling in persistent extreme climate events in eastern China in summer 2022
March 2024
In 2022, eastern China was wet in the north and dry in the south, and characterized particularly by a persistent compound extreme event with high temperatures, low precipitation, and dry soil during...
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Westward extension of summer atmospheric circulation over the North Pacific after the 1990s
March 2024
This paper documents the westward extension of the summer atmospheric circulation over the North Pacific (NP circulation) around the 1990s and investigates the possible reason, based on the North Pacific...
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Recent urbanization increases exposure to humid-heat extreme events over populated regions of China
March 2024
Extreme-heat research has largely focused on dry heat, while humid heat, which presents a major societal impact, especially on human health, remains relatively understudied. Previous studies have revealed...
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Enhanced nitrous acid (HONO) formation via NO2 uptake and its potential contribution to heavy haze formation during wintertime
Available online 31 March 2024
A full understanding of the sources of atmospheric nitrous acid (HONO) in the polluted urban atmosphere remains a challenge. In this study, ambient HONO and relevant species were measured during January...
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A portable instrument for measurement of atmospheric OX and NO2 based on cavity ring-down spectroscopy
Available online 31 March 2024
Atmospheric Ox (nitrogen dioxide (NO2) + ozone (O3)) can better reflect the local and regional change characteristics of oxidants compared to O3 alone, so obtaining Ox accurately and rapidly is the...
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Interannual variability of boreal summer intraseasonal oscillation over the northwestern Pacific influenced by the Pacific Meridional Mode
Available online 30 March 2024
During the boreal summer, intraseasonal oscillations exhibit significant interannual variations in intensity over two key regions: the central-western equatorial Pacific (5°S–5°N, 150°E–150°W) and the...
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Comparative study on the performance of ConvLSTM and ConvGRU in classification problems—taking early warning of short-duration heavy rainfall as an example
Available online 30 March 2024
Convolutional long short-term memory (ConvLSTM) and convolutional gated recurrent unit (ConvGRU) are two widely adopted deep learning models that combine recurrent mechanisms with convolutional operations...
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Impacts of global biogenic isoprene emissions on surface ozone during 2000–2019
Available online 28 March 2024
Biogenic isoprene is an important precursor of tropospheric ozone (O3). Here, a coupled chemistry–vegetation model was used to quantify the contributions of isoprene emissions to surface O3 pollution...
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Isolated deep convections over the Tibetan Plateau in the rainy season during 2001–2020
Available online 26 March 2024
The Tibetan Plateau (TP) is a prevalent region for convection systems due to its unique thermodynamic forcing. This study investigated isolated deep convections (IDCs), which have a smaller spatial...
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Role of the Greenland Sea ice anomaly in the late-spring drought over Northwest China
Available online 23 March 2024
Drought across Northwest China in late spring has exerted a vital effect on the local climate and agricultural production, and has been alleviated during the past decades. This study explored the influence...
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Predominant types of regional cold waves in North China and their historical changes
Available online 21 March 2024
Cold wave (CW) events in East Asia have a significant impact on the social economy, ecosystems, and human health. Based on daily CW records from October to March during 1980–2019 and K-means clustering,...
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