Journal of Geophysical Research: Atmospheres最新文献

{"title":"Self-Induced Gravity Wave Attenuation and Breaking With Generation of Secondary Modes in the Lower Mesosphere During Two SOUTHTRAC Flights Above the Andes","authors":"P. Alexander,&nbsp;A. de la Torre,&nbsp;T. Marcos,&nbsp;R. Hierro,&nbsp;N. Kaifler,&nbsp;S. Rhode,&nbsp;M. Geldenhuys","doi":"10.1029/2024JD042981","DOIUrl":"https://doi.org/10.1029/2024JD042981","url":null,"abstract":"<p>We combine lidar temperature observations onboard a research aircraft with numerical simulations in the framework of the SOUTHTRAC (Southern Hemisphere Transport, Dynamics, and Chemistry) Campaign. Deep propagation of gravity waves (GW) from the troposphere to the lower mesosphere is studied above the Southern Andes during two flights in September 2019. We use the Weather Research and Forecasting (WRF) model with a configuration for the simulations that has been validated in a previous study of this campaign. Strong orographic GW were detected during both flights that were conceived for different latitudes. The observational and numerical data reveal the presence of significant GW attenuation, breaking and secondary wave generation above the stratopause due to the development of convective and dynamic instability as well as conditions for wave evanescence. The GW generated by topography were not able to alter the stable structure of the stratosphere, but the scenario was quite different in the lower mesosphere. The disturbed zones in that layer were produced by the combined effect on lapse rate of the background temperature variation and the perturbations associated with GW, which together may induce large vertical gradients. As a consequence, areas of reduced stability (with low or even negative buoyancy parameter) emerge above the stratopause. The existence of these GW self-induced attenuation layers in the mesosphere where temperature perturbations produce large negative gradients may lead to an amplitude growth control mechanism for the upward propagating waves.</p>","PeriodicalId":15986,"journal":{"name":"Journal of Geophysical Research: Atmospheres","volume":"130 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative Evaluation of the Ability of the MYNN-EDMF PBL Scheme in WRF Model to Reproduce Near Surface Wind Speed Over Different Topographical Types","authors":"Yunpeng Shan,&nbsp;Yangang Liu,&nbsp;Xin Zhou","doi":"10.1029/2023JD040620","DOIUrl":"https://doi.org/10.1029/2023JD040620","url":null,"abstract":"<p>This study systematically evaluates the performance of the Mellor-Yamada-Nakanishi-Niino-Eddy-Diffusion-Mass-Flux planetary boundary layer (PBL) scheme within the Weather Research and Forecasting (WRF) model in simulating near-surface wind speeds across various topographies in New York State (NYS). Simulated wind speeds are compared with in-situ measurements from 22 surface sites, grouped into six topographic categories: continental plain (CT), lakeside (LS), river valley (RV), Long Island (LI), Block Island (BI), and offshore ocean (OO). A quantitative evaluation based on Relative Euclidean Distance shows that wind speeds at the OO site are the most accurately reproduced, followed by those at LI sites, while the model performs less accurately for the remaining topographic groups. Wind speeds over CT sites tend to be overestimated by approximately 1 m/s, although their diurnal variability (DV) is well captured. In contrast, the model underestimates wind DV at LS, RV, LI, and BI sites, with the largest biases occurring at LI and BI, resulting in underestimated daytime wind speed and/or overestimated nighttime wind speed. The OO winds exhibit minimal diurnal variation, accurately captured by our WRF model. The surface wind diurnal variation is closely linked to PBL development. Among the indicators of PBL development, surface potential temperature biases most strongly correlate with wind speed biases. Our WRF model faces challenges in capturing the distinctions between winds influenced by local circulations and those over continental plains, and the significantly stronger winds at OO compared to BI. Potential causes for these biases are discussed, offering pathways for improving surface wind simulations in future.</p>","PeriodicalId":15986,"journal":{"name":"Journal of Geophysical Research: Atmospheres","volume":"130 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2023JD040620","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Decoupling of Monsoon Dynamics and Thermodynamics Under Global Warming: Evidence From Multi-Proxy Records in a Single Speleothem","authors":"Jiayu Lu,&nbsp;Jingyao Zhao,&nbsp;Haiwei Zhang,&nbsp;Hanying Li,&nbsp;Lijuan Sha,&nbsp;Jian Wang,&nbsp;Xiyu Dong,&nbsp;R. Lawrence Edwards,&nbsp;Hai Cheng","doi":"10.1029/2024JD042995","DOIUrl":"https://doi.org/10.1029/2024JD042995","url":null,"abstract":"<p>Speleothem multiproxy records are important for understanding the differences between the dynamic and thermodynamic aspects of the Asian summer monsoon. In this study, we simultaneously provide the seasonally resolved oxygen isotope (δ¹⁸O_s) and trace element ratio (Mg/Ca, Sr/Ca, and Ba/Ca) records from an actively growing stalagmite from Zhangjia Cave, Sichuan Basin, southwestern China, covering the past ∼130 years. The overall increasing trend in δ¹⁸O_s indicates a weakening of Asian summer monsoon circulation over the last century, while the trace element ratios suggest a relatively stable precipitation trend. Notably, the correlation between δ¹⁸O_s and trace element ratios has experienced a significant transition since the acceleration of global warming from the 1970s. Our findings reinforce the notion that the forcing of greenhouse gases weakened monsoon dynamics (circulation) over the past century, whereas the monsoon thermodynamic (precipitation) was essentially unchanged, thus highlighting the different influences of the greenhouse gases on the monsoon dynamics and thermodynamics, respectively.</p>","PeriodicalId":15986,"journal":{"name":"Journal of Geophysical Research: Atmospheres","volume":"130 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Comparative Study of Cloud Properties Between Northern and Southern High Latitudes Based on ARM Observations and EAMv2 Simulations","authors":"N. Desai,&nbsp;M. Diao,&nbsp;Y. Shi,&nbsp;X. Liu","doi":"10.1029/2024JD041588","DOIUrl":"https://doi.org/10.1029/2024JD041588","url":null,"abstract":"<p>Earth's high-latitude regions show a considerable amount of cloud coverage, which significantly affects global radiation budgets. In this study, we examine ground- and ship-based remote sensing observations from two Atmospheric Radiation Measurement (ARM) field campaigns conducted in the high-latitude regions of Northern and Southern Hemispheres (NH and SH). A comparison of macrophysical properties for low, mid-level, high, and deep clouds shows that the cloud top heights and thickness values are higher in the Arctic for each cloud type compared with the Southern Ocean and Antarctic regions, possibly due to higher sea surface temperatures in the north Atlantic. The Arctic also shows lower ice phase occurrence frequencies compared with the SH high latitudes for low clouds. For high, mid-level and deep clouds, the cloud phase distributions as a function of temperature show small geographical variabilities. The observations are then compared with the Department of Energy (DOE) Energy Exascale Earth System Model (E3SM) to evaluate the representations of these cloud properties. The results show that the model captures cloud base and top heights well and reproduces the differences in cloud macrophysical properties between the two hemispheres. But the model underestimates ice phase frequencies for all cloud types. Such model cloud phase bias is strongly correlated with positive relative humidity biases and negative aerosol number concentration biases, indicating an important role of relative humidity and aerosols in modulating cloud phase partitioning in the model.</p>","PeriodicalId":15986,"journal":{"name":"Journal of Geophysical Research: Atmospheres","volume":"130 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Resonant Asian Monsoon During Intermediate Conditions of the Last Deglaciation: Insights From Speleothem Records","authors":"Jingyao Zhao,&nbsp;Carlos Pérez-Mejías,&nbsp;Xiyu Dong,&nbsp;Yassine Ait Brahim,&nbsp;Jiahui Cui,&nbsp;Liangkang Pan,&nbsp;Xi Chen,&nbsp;Kexin Wang,&nbsp;Yan Yang,&nbsp;Jun Cheng,&nbsp;Haiwei Zhang,&nbsp;Liangcheng Tan,&nbsp;Hai Cheng","doi":"10.1029/2024JD042523","DOIUrl":"https://doi.org/10.1029/2024JD042523","url":null,"abstract":"<p>Extensive research has explored how sweet spot conditions influence climate variability in the nonlinear Earth system. However, their effects throughout deglaciations remain unclear. Based on an annual-laminated speleothem δ¹⁸O record with unprecedented chronology precision, we first identified a two-step termination of the Asian Heinrich Period-1 at 15.11 and 14.69 ky BP (thousand years before present, where the present is 1950 CE), each marked by a centennial-scale strengthening of the Asian summer monsoon (ASM), in contrast to centennial-scale ASM weakening events observed at 17.8 and 16.09 ky BP. These transitions occurred under intermediate CO₂ and ice volume conditions, which dynamically paced the Atlantic Meridional Overturning Circulation (AMOC) fluctuations and the subsequent reoccurrence of ASM events. It highlights the role of stochastic resonance in nonlinear climate system. Additionally, these AMOC/ASM events also resonated with abrupt CO₂ risings across various pervasive modes of variability, which account for half of total CO₂ rise during last deglaciation. This substantial contribution to CO₂ increases played a key role in ice termination.</p>","PeriodicalId":15986,"journal":{"name":"Journal of Geophysical Research: Atmospheres","volume":"130 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of the Indian Walker Circulation on \u0000 \u0000 \u0000 δ\u0000 \u0000 $delta $\u0000 18OP and Hydroclimate Variability in the Indian Ocean Basin","authors":"Patrick G. Cho,&nbsp;Georgina Falster,&nbsp;Diogo Bolster,&nbsp;Melissa A. Berke,&nbsp;Marc F. Müller","doi":"10.1029/2025JD043840","DOIUrl":"https://doi.org/10.1029/2025JD043840","url":null,"abstract":"<p>The Indian Ocean plays a crucial role in water cycle dynamics around the Indian Ocean Basin, yet the relationships between the Indian Walker Circulation (IWC) and hydroclimate variability remain poorly understood. We examine the IWC-hydroclimate linkages throughout the Indian Ocean Basin during two study periods (instrumental era and the last millennium), using the ECHAM5-wiso, iCESM-iLME, and ERA5 global data products. We leverage the stable isotopic composition of precipitation (<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>δ</mi>\u0000 </mrow>\u0000 <annotation> $delta $</annotation>\u0000 </semantics></math>¹⁸O_P) as an integrative water cycle tracer to elucidate the link between large-scale atmospheric processes and regional hydroclimate characteristics. We find a strong statistical relationship between the East African short rain <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>δ</mi>\u0000 </mrow>\u0000 <annotation> $delta $</annotation>\u0000 </semantics></math>¹⁸O_P and IWC in Eastern Africa and Horn of Africa. In Indonesia, the relationship is weaker due to the strong influence of the Pacific Walker Circulation (PWC). These patterns arise over multiple time scales and are consistent with the strong tie between the IWC and precipitation variability during the short rain season in Eastern Africa and Horn of Africa that had previously been reported in the instrumental era but not yet for the last millennium. We document strong fluctuations in the strength of the IWC during the last millennium, with periods of stronger or weaker interactions with the PWC that influenced <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>δ</mi>\u0000 </mrow>\u0000 <annotation> $delta $</annotation>\u0000 </semantics></math>¹⁸O_P variability. Finally, our study underscores the ability of <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>δ</mi>\u0000 </mrow>\u0000 <annotation> $delta $</annotation>\u0000 </semantics></math>¹⁸O_P to capture major atmospheric circulation signals, demonstrating its potential to examine the impact of interacting Walker Circulations on regional hydroclimate even during periods of low precipitation.</p>","PeriodicalId":15986,"journal":{"name":"Journal of Geophysical Research: Atmospheres","volume":"130 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2025JD043840","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wet Deposition of Black Carbon: Insights From a Comparative Study of Char/Soot in PM10 and Rainwater","authors":"Xiaocong Peng,&nbsp;Yuzhen Fu,&nbsp;Guohua Zhang,&nbsp;Wei Sun,&nbsp;Jinting Huang,&nbsp;Ziyong Guo,&nbsp;Juying Lin,&nbsp;Jianzhong Song,&nbsp;Xinming Wang,&nbsp;Ping'an Peng,&nbsp;Xinhui Bi","doi":"10.1029/2024JD043095","DOIUrl":"https://doi.org/10.1029/2024JD043095","url":null,"abstract":"<p>Wet scavenging of black carbon (BC) is essential for evaluating their atmospheric lifetime and radiative forcing. However, it is crucial to differentiate atmospheric BC into char and soot subgroups, given their significant disparities in physicochemical properties and potential impacts. We first conducted a comparative study of char/soot in PM₁₀ and rainwater, collected over a year in urban Guangzhou, China. The mean char/soot ratio in PM₁₀ (∼2.5) is obviously higher than that in rainwater (∼0.8), corresponding to higher wet scavenging efficiency of soot. Through sequence rainwater sampling during individual rainfall events, we further distinguished the contributions of in-cloud and below-cloud scavenging, with in-cloud scavenging predominantly contributed to the distinct difference between char and soot. Such a distinct wet scavenging behavior of char and soot would have substantial implications for the atmospheric behavior of BC, which should be considered in future models for accurate evaluation of its lifetime and climate impact.</p>","PeriodicalId":15986,"journal":{"name":"Journal of Geophysical Research: Atmospheres","volume":"130 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Observed Links Between Atmospheric Cloud Radiative Effects and Mesoscale Organization of Deep Convection","authors":"Ni Dai,&nbsp;Hui Su,&nbsp;J. David Neelin,&nbsp;Brian J. Soden,&nbsp;Yi-Hung Kuo","doi":"10.1029/2024JD041030","DOIUrl":"https://doi.org/10.1029/2024JD041030","url":null,"abstract":"<p>Recent research suggests atmospheric cloud radiative effect (ACRE) acts as an important feedback mechanism for enhancing the development of convective self-aggregation in idealized numerical simulations. Here, we seek observational relationships between longwave (LW) ACRE and the spatial organization of mesoscale convective systems (MCSs) in the tropics. Three convective organization metrics that are positively correlated with the area of MCS, that is, convective organization potential, the area fraction of precipitating MCS, and the precipitation fraction of MCS, are used to indicate the degree of convective organization. Our results show that the contrast in the LW ACRE inside and outside an MCS is consistent across different MCS precipitation intensities throughout the life cycle of an MCS, typically 90–100 W/m², and provides important positive feedback to the circulation of the given MCS. However, the LW ACRE inside and outside an MCS as well as their difference are not strongly related to the degree of organization, suggesting that the LW cloud radiative feedback may be supportive of MCS formation and maintenance without necessarily being a dominant factor for spatial organization of MCSs. The domain average vertical velocity does tend to be related to the measures of convective organization, suggesting that factors that favor large-scale low-level convergence may exert a leading effect in creating an environment favorable for mesoscale organization of deep convection.</p>","PeriodicalId":15986,"journal":{"name":"Journal of Geophysical Research: Atmospheres","volume":"130 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JD041030","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characteristics of Global Light Rain System From GPM/DPR Measurements","authors":"Seoeun Choi,&nbsp;Jihoon Ryu,&nbsp;Sang-Moo Lee,&nbsp;Byung-Ju Sohn","doi":"10.1029/2024JD042434","DOIUrl":"https://doi.org/10.1029/2024JD042434","url":null,"abstract":"<p>Understanding the microphysical and macrophysical characteristics of global light rain (0.2–2.5 mm/hr) is important for modeling the hydrological cycle and enhancing the cloud-related parameterization in the numerical weather prediction (NWP) model. To understand the characteristics of light rain systems, this study classified global light rain events using the Global Precipitation Measurement Dual-frequency Precipitation Radar measurements over the 8–years period. As a result, global light rain systems were identified into four types based on microphysical (mass-weighted mean diameter (<i>D</i>_<i>m</i>) and normalized intercept parameter (log<i>N</i>_<i>w</i>)) and macrophysical (cloud-echo-top height (CETH)) parameters. The four classified types are (a) Type 1: light rain dominant in tropics and mid-latitude, (b) Type 2: light rain linked to atmospheric deep convection, (c) Type 3: light rain from humid oceanic inflow blocked by topography, and (d) Type 4: light rain associated with subtropical high-pressure systems. Type 2 shows the largest <i>D</i>_<i>m</i> and the smallest log<i>N</i>_<i>w</i>, while Type 4 exhibited opposite patterns. Type 3 has the highest CETH and vertically stretching radar reflectivity profiles. Type 1 showed similar distributions of <i>D</i>_<i>m</i> and log<i>N</i>_<i>w</i> with Type 3 and radar reflectivity with Type 4 but different distributions of hydrometeor phase with Types 3 and 4. To clarify the characteristics of Type 1, a detailed analysis was conducted, showing larger <i>D</i>_<i>m</i> and log<i>N</i>_<i>w</i>, higher radar reflectivity, and stronger seasonality in tropical regions compared to mid-latitudes. This study provides valuable insights into geospatial/statistical characteristics of global light rain, which is expected to enhance the accuracy of cloud parameterization in the NWP model.</p>","PeriodicalId":15986,"journal":{"name":"Journal of Geophysical Research: Atmospheres","volume":"130 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JD042434","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of MJO Seasonality on the Intensification of Intraseasonal PNA During El Niño and La Niña Winters","authors":"Shenghua Jian,&nbsp;Fang Zhou,&nbsp;Minghong Liu,&nbsp;Jian Shi","doi":"10.1029/2025JD043818","DOIUrl":"https://doi.org/10.1029/2025JD043818","url":null,"abstract":"<p>This study mainly examined the distinct early-to-late winter variations in the intraseasonal Pacific–North American teleconnection mode (ISPNA) under the two El Niño–Southern Oscillation phases. Results showed that these variations were controlled by the Madden–Julian Oscillation (MJO) seasonality. Compared to El Niño winters, the ISPNA exhibits a stronger early-to-late winter enhancement during La Niña winters. Furthermore, the MJO and the ISPNA exhibit a phase-locked relationship, which is more pronounced and reliable in late winter. The Rossby wave activity associated with the MJO that propagates northward from the tropics toward the subtropical action center of the ISPNA indicates that increased MJO activity contributes to greater ISPNA intensity. The MJO also exhibits clear seasonality, exhibiting enhancement from early winter to late winter, which is particularly evident during La Niña winters and results in intensified ISPNA during these periods.</p>","PeriodicalId":15986,"journal":{"name":"Journal of Geophysical Research: Atmospheres","volume":"130 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}