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1432篇 您的检索式:作者名="Filippo"
    题名 作者 年代 出处 被引量
1数值模式不同分辨率和地形对东亚降水模拟影响的试验显示文摘为探讨东亚地区降水数值模拟中水平分辨率和地形的作用,使用RegCM2区域气候模式,采用不同的模式分辨率和地形,对东亚降水进行对比模拟试验。结果表明,东亚地区降水的模拟效果取决于模式的水平分辨率,模式分辨率越高,模拟的效果越好。使用实际地形的模拟效果好于使用平滑地形的。但同时,使用较高分辨率的平滑地形的模拟,效果好于使用次高分辨率的实际地形的模拟。这表明在东亚地区降水模拟中,分辨率与地形相比,起着至少同样重要的作用。结果指出,对东亚地区降水的模拟而言,使用60 km及以上分辨率可能是必需的。高学杰 徐影 赵宗慈 Jeremy S.PAL Filippo GIORGI 2006大气科学2006,30,2:115
2Changes of Extreme Events in Regional Climate Simulations over East Asia显示文摘使用ResCM2区域气候模式,嵌套澳大利亚CSIRO R21L9全球海气耦合模式,进行了温室效应(二氧化碳加倍)对东亚(主要是中国区域)极端气候事件影响的数值试验。控制试验的结果表明,区域模式能够较好地模拟中国区域的极端气候事件。对温室效应引起的它们的变化进行了信度检验,分析结果表明,温室效应将引起日最高和最低气温增加,日较差减小;使得高温天气增多,低温日数减少。降水日数和大雨日数在一些地区将增加。同时还会引起影响中国的台风活动的变化。高学杰 赵宗慈 Filippo Giorgi 2002Advances in Atmospheric Sciences2002,19,5:119
3温室效应引起的中国区域气候变化的数值模拟Ⅱ:中国区域气候的可能变化显示文摘使用RegCM2区域气候模式单向嵌套澳大利亚CSIRO R21L9全球海-气耦合模式,进行了温室气体CO2加倍对中国气候变化影响的数值试验研究。该文为第2部分,对敏感性试验结果进行的分析。分析表明:由于温室效应,中国区域的地面气温特别是在冬季和北方将有明显升高,区域年平均的升高值为2.5℃;同时区域内日最高和最低气温将明显上升,日较差将减小。结果还表明,在CO2倍增条件下,中国区域降水将呈增加趋势,区域年平均的增加值为12%;以夏季的增加率最大,其次为冬季。中国汛期降水将呈现出“三类雨型”出现频率增多的趋势。南方的大雨日数将有所增加。此外,生成和影响中国的台风数目也将有所增加。温室气体的增加同时对环流场产生影响,如导致500 hPa高度场的升高。高学杰 赵宗慈 丁一汇 黄荣辉 Filippo Giorgi 2003气象学报2003,61,1:106
4中国当代土地利用对区域气候影响的数值模拟显示文摘使用RegCM3区域气候模式,嵌套欧洲数值预报中心(ECMWF)ERA40再分析资料,分别进行了中国区域在实际植被和理想植被分布情况下各15年时间长度(1987~2001)的积分试验,以探讨中国土地利用状况对气候的影响.通过两个试验结果的对比,研究了中国土地利用状况对气候的影响.分析主要集中于气温和降水等变化上,并对结果进行了统计显著性检验.结果表明。当代土地利用,植被覆盖变化加强了中国地区冬、夏季的季风环流,同时改变了地表能量平衡状况,从而对各气候要素产生重要影响.冬季,植被改变引起长江以南降水减少、气温降低,长江以北降水增加.夏季,植被改变显著影响了南方地区的气候,使得南方降水增多,黄淮、江淮气温降低,华南气温上升;同时引起中国北方降水减少,气温在西北部分植被退化地区升高.植被变化对日最低、最高气温的影响更大.总体而言,土地利用引起了年平均降水在南方增加、北方减少,年平均气温在南方显著降低.高学杰 张冬峰 陈仲新 Jeremy S.Pal Filippo Giorgi 2007中国科学(D辑)2007,37,3:71
5RegCM3对东亚环流和中国气候模拟能力的检验显示文摘使用RegCM3区域气候模式,嵌套ERA40再分析资料,对东亚地区进行了15年(1987~2001年)时间长度的数值积分试验,分析了模式对东亚平均环流及中国地区气温和降水的模拟。结果表明,模式对东亚平均环流的特征和中国地区降水、地面气温的年、季地理分布和季节变化特征均具有一定的模拟能力,对气温和降水年际变率的模拟也较好。此外模式模拟在测站稀少地区,可以提供局地如降水分布更可靠的信息。模式对气温的模拟存在1-3℃的系统性冷偏差;对中国地区降水地理分布的模拟也存在一定偏差,如对年平均降水的模拟中,降水最大值位置与观测有一定差距,特别是对冬季降水中心的模拟存在较大偏差。模式模拟的夏季降水,在中国北方地区总体偏大100-200 mm,南方总体偏小100-200 mm。模式对地面气温的模拟效果好于降水。张冬峰 欧阳里程 高学杰 赵宗慈 PAL Jeremy S GIORGI Filippo 2007热带气象学报2007,23,5:70
6Climate change in China in the 21st century as simulated by a high resolution regional climate model显示文摘Climate change in the 21st century over China is simulated using the Abdus Salam International Centre for Theoretical Physics (ICTP) Regional Climate Model version 3 (RegCM3). The model is one-way nested within the global model CCSR/NIES/FRCGC MIROC3.2_hires (Center for Climate System Research/National Institute for Environmental Studies/Frontier Research Center for Global Change/Model for Interdisciplinary Research on Climate). A 150-year (1951-2100) transient simulation is conducted at 25 km grid spacing, under the Intergovernmental Panel on Climate Change Special Report on Emissions Scenarios (IPCC SRES) A1B scenario. Simulations of present climate conditions in China by RegCM3 are compared against observations to assess model performance. Results show that RegCM3 reproduces the observed spatial structure of surface air temperature and precipitation well. Changes in mean temperature and precipitation in December-January-February (DJF) and June-July-August (JJA) during the middle and end of the 21st century are analyzed. Significant future warming is simulated by RegCM3. This warming becomes greater with time, and increased warming is simulated at high latitude and high altitude (Tibetan Plateau) areas. In the middle of the 21st century in DJF, a general increase of precipitation is found in most areas, except over the Tibetan Plateau. Precipitation changes in JJA show an increase over northwest China and a decrease over the Tibetan Plateau. There is a mixture of positive and negative changes in eastern China. The change pattern at the end of the century is generally consistent with that in mid century, except in some small areas, and the magnitude of change is usually larger. In addition, the simulation is compared with a previous simulation of the RegCM3 driven by a different global model, to address uncertainties of the projected climate change in China.GAO XueJie SHI Ying ZHANG DongFeng GIORGI Filippo 2012Chinese Science Bulletin2012,57,10:61
7Climate Change over China in the 21st Century as Simulated by BCC_CSM1.1-RegCM4.0显示文摘Driven by the global model,Beijing Climate Center Climate System Model version 1.1(BCC_CSM1.1),climate change over China in the 21st century is simulated by a regional climate model(RegCM4.0)under the new emission scenarios of the Representative Concentration Pathways—RCP4.5 and RCP8.5.This is based on a period of transient simulations from 1950 to2099,with a grid spacing of 50 km.The present paper focuses on the annual mean temperature and precipitation in China over this period,with emphasis on their future changes.Validation of model performance reveals marked improvement of the RegCM4.0 model in reproducing present day temperature and precipitation relative to the driving BCC_CSM1.1 model.Significant warming is simulated by both BCC_CSM1.1 and RegCM4.0,however,spatial distribution and magnitude differ between the simulations.The high emission scenario RCP8.5 results in greater warming compared to RCP4.5.The two models project different precipitation changes,characterized by a general increase in the BCC_CSM1.1,and broader areas with decrease in the RegCM4.0 simulations.GAO Xue-Jie WANG Mei-Li Filippo GIORGI 2013Atmospheric and Oceanic Science Letters2013,6,5:78
8RegCM3区域气候模式对中国气候的模拟显示文摘使用RegCM3区域气候模式嵌套ERA40再分析资料,对东亚地区进行了15 a(1987-2001年)时间长度的数值积分试验。结果表明:模式可较好地模拟中国地面气温的分布和季节变化,但存在系统性的冷偏差;对降水的变化模拟也较好,但其地理分布模拟存在一定偏差。张冬峰 高学杰 赵宗慈 Jeremy S.RAL Filippo GIORGI 2005气候变化研究进展2005,1,3:57
9区域气候模式对温室效应引起的中国地区气候变化的数值模拟(英文)显示文摘利用基于 RegCM2的区域气候模式并单向嵌套澳大利亚 CSIRO R21L9全球海-气耦合模式,进行了温室气体二氧化碳浓度倍增对中国气候变化影响的数值试验研究。控制试验结果表明:区域模式由于具有较高的分辨率,因而对中国区域地面气温和降水的模拟效果较全球模式有了较大提高;模式对 2×CO2敏感性试验结果表明了在 CO2浓度倍增情况下,由于温室效应,中国区域的地面气温将有明显升高,降水也将呈增加趋势。高学杰 赵宗慈 丁一汇 黄荣辉 Filippo Giorgi 2001Advances in Atmospheric Sciences2001,18,6:51
10中国区域气候变化的一个高分辨率数值模拟显示文摘使用RegCM3区域气候模式,单向嵌套NCAR/NASA全球环流模式FvGCM/CCM3的输出结果,对中国及东亚地区进行了当代1961~1990年和在IPCCA2温室气体排放情景下21世纪末期2071~2100年各30年时间长度,水平分辨率为20km的气候变化模拟试验.首先分析了全球和区域模式对中国及东亚地区当代气候的模拟情况,结果表明,两模式对中国及东亚地区500hPa高度场、地面气温和降水模拟均较好.相对于全球模式,区域模式提供了气温和降水更详细的空间分布信息,对夏季的季风降水型模拟也有了很大改进.对未来气候的模拟表明,冬、夏季和年平均气温都将明显升高,但全球模式模拟出冬季北方更大的增温,而区域模式模拟的夏季增温相对在华北、内蒙古至西北及青藏高原地区更大.两个模式对冬季降水变化的模拟相对比较一致,但在夏季表现出很多差异,全球模式的模拟以总体增加为主,区域模式则除东北、黄淮和西北地区外,以普遍减少为主.对上述差别的形成原因进行了简要分析,此外还给出了区域模式所模拟的气温和降水年际变率的变化.高学杰 石英 Filippo GIORGI 2010中国科学:地球科学2010,40,7:55
11温室效应引起的中国区域气候变化的数值模拟Ⅰ:模式对中国气候模拟能力的检验显示文摘使用RegCM2区域气候模式单向嵌套澳大利亚CSIRO R21L9全球海-气耦合模式,进行了CO2加倍对中国区域气候变化影响的数值试验研究,分析了控制试验(1×CO2)即模式对中国当代气候的模拟情况。首先给出了全球模式控制试验在中国地区的结果,分析表明它对中国区域的地面气温和降水具有一定的模拟能力,其结果可以用来制作驱动区域气候模式的初始场和侧边界。对RegCM2 5 a时间长度控制试验积分结果的分析与检验表明,区域气候模式由于具有较高的分辨率和较完善的物理过程,它对中国区域地面气温和降水的模拟效果较全球模式有了较大提高,如它模拟的各月气温与实况的相关系数全年12个月的平均由全球模式的0.83提高到0.92,降水由0.48提高到0.65。高学杰 赵宗慈 丁一汇 黄荣辉 Filippo Giorgi 2003气象学报2003,61,1:56
12Liver stiffness in the hepatitis B virus carrier:A non-invasive marker of liver disease influenced by the pattern of transaminases显示文摘AIM: To investigate the usefulness of transient elastography by Fibroscan (FS),a rapid non-invasive technique to evaluate liver fibrosis,in the management of chronic hepatitis B virus (HBV) carriers.METHODS: In 297 consecutive HBV carriers,we studied the correlation between liver stiffness (LS),stage of liver disease and other factors potentially influencing FS measurements.In 87 chronic hepatitis B (CHB) patients,we monitored the FS variations according to the spontaneous or treatment-induced variations of biochemical activity during follow-up.RESULTS: FS values were 12.3 ± 3.3 kPa in acute hepatitis,10.3 ± 8.8 kPa in chronic hepatitis,4.3 ± 1.0 kPa in inactive carriers and 4.6 ± 1.2 kPa in blood donors.We identified the cut-offs of 7.5 and 11.8 kPa for the diagnosis of fibrosis ≥ S3 and cirrhosis respectively,showing 93.9% and 86.5% sensitivity,88.5% and 96.3% specificity,76.7% and 86.7% positive predictive value (PPV),97.3% and 96.3% negative predictive value (NPV) and 90.1% and 94.2% diagnostic accuracy.At multivariate analysis in 171 untreated carriers,fibrosis stage (t = 13.187,P < 0.001),active vs inactive HBV infection (t = 6.437,P < 0.001),alanine aminotransferase (ALT) (t = 4.740,P < 0.001) and HBV-DNA levels (t = -2.046,P = 0.042) were independently associated with FS.Necroinflammation score (t = 2.158,> 10/18 vs ≤ 10/18,P = 0.035) and ALT levels (t = 3.566,P = 0.001) were independently associated with LS in 83 untreated patients without cirrhosis and long-term biochemical remission (t = 4.662,P < 0.001) in 80 treated patients.During FS monitoring (mean follow-up 19.9 ± 7.1 mo) FS values paralleled those of ALT in patients with hepatitis exacerbation (with 1.2 to 4.4-fold increases in CHB patients) and showed a progressive decrease during antiviral therapy.CONCLUSION: FS is a non-invasive tool to monitor liver disease in chronic HBV carriers,provided that the pattern of biochemical activity is taken into account.In the inactive carrier,it identifies non-HBV-related causes of liver damage and transient reactivations.In CHB patients,it may warrant a more appropriate timing of control liver biopsies.Filippo Oliveri Barbara Coco Pietro Ciccorossi Piero Colombatto Veronica Romagnoli Beatrice Cherubini Ferruccio Bonino Maurizia Rossana Brunetto 2008World Journal of Gastroenterology2008,14,40:43
13RegCM3对21世纪中国区域气候变化的高分辨率模拟显示文摘使用RegCM3区域气候模式,单向嵌套日本ccsR/NIEs/FRcGc的MIROC3.2_hires全球模式输出结果,对中国及东亚地区进行了1951—2100年,在IPCCSRESA1B温室气体排放情景下,水平分辨率为25km的连续气候变化模拟试验.首先分析了区域模式对当代气候的模拟能力,结果表明,模式可较好地再现中国地区地面气温和降水的空间分布及数值.对未来21世纪中期和末期气候变化的模拟表明,未来平均气温将明显升高,且随时间推移,气温升高幅度增大,升温高值区集中在高纬度和高海拔(青藏高原)地区.21世纪中期,冬季降水除青藏高原外以增加为主,夏季降水在中国西部西北地区增加、青藏高原减少;东部地区降水变化呈正负相间的分布.21世纪末期,降水变化分布除个别地方外,和21世纪中期一致,但变化幅度增大.此外,将此模拟结果-9以往RegCM3在另一个全球模式驱动下的结果进行了对比,以了解中国地区气候变化预估中的不确定性.高学杰 石英 张冬峰 GIORGI Filippo 2012科学通报2012,57,5:41
14Managements of recurrent hepatocellular carcinoma after liver transplantation: A systematic review显示文摘AIM: To investigate the efficacy(survival) and safety of treatments for recurrent hepatocellular carcinoma(HCC) in liver transplantation(LT) patients.METHODS: Literature search was performed on available online databases without a time limit until January 2015. Clinical studies describing survival after HCC recurrence in LT patients were retrieved for a fulltext evaluation. A total of 61 studies were selected: 13 case reports, 41 retrospective case series, and 7 retrospective comparative studies.RESULTS: Based on all included studies, the mean HCC recurrence rate was 16% of all LTs for HCC. A total of 1021 LT patients experienced HCC recurrence. The median time from LT to HCC recurrence was 13 mo(range 2-132 mo). The majority of patients(67%) presented with HCC extra-hepatic recurrences, involving lung, bone, adrenal gland, peritoneal lymph nodes, and rarely the brain. Overall survival after HCC recurrence was 12.97 mo. Surgical resection of localized HCC recurrence and Sorafenib for controlling systemic spread of HCC recurrence were associated with the higher survival rates(42 and 18 mo, res-pectively). However, Sorafenib, especially when combined with m TOR, was frequently associated with severe side effects that required dose reduction or discontinuation CONCLUSION: Management of recurrent HCC in LT patients is challenging and associated with poor prognosis independently of the type of treatment.Nicola de'Angelis Filippo Landi Maria Clotilde Carra Daniel Azoulay 2015World Journal of Gastroenterology2015,21,39:42
15A high resolution simulation of climate change over China显示文摘Multi-decadal high resolution climate change simulations over East Asia were performed by using The Abdus Salam International Centre for Theoretical Physics (ICTP) Regional Climate Model (RegCM3), nested within the NASA/NCAR global model FvGCM/CCM3. Two sets of simulations were conducted at 20-km grid spacings, one for present day (1961-1990) and one for the future climate (2071-2100, IPCC A2 scenario). Simulations of present climate conditions over China by RegCM3 and FvGCM were compared against observations to assess the model performance. Results showed that both models repro- duced the observed spatial structure of 500 hPa height, surface air temperature and precipitation. Compared with FvGCM, RegCM3 provided increasing spatial detail of surface variables. Furthermore, RegCM3 improved the simulation of monsoon precipitation over the region. Changes in the mean temperature and precipitation were analyzed and compared between the two models. Significant warming in the end of the 21st century was simulated by both models in December-January-February (DJF), June-July-August (JJA), and the annual mean. In DJF, greater warming was simulated by FvGCM over Northeast and Northwest China, as well as the Tibetan Plateau, compared with RegCM. In JJA, RegCM3 simulated greater warming over northern China, Inner Mongolia, Northwest China, and the Tibetan Plateau. Simulated changes in DJF precipitation showed similar spatial patterns between the two models. In JJA, while FvGCM projected a prevailing increase of monsoon precipitation over China, which is in agreement with other global models, RegCM3 projected extended areas of decreased precipitation. Changes in the variability for annual mean temperature and precipitation also are presented.GAO XueJie SHI Ying Filippo GIORGI 2011Science China Earth Sciences2011,54,3:40
16温室效应对青藏高原及青藏铁路沿线气候影响的数值模拟显示文摘在一个全球模式中嵌套了RegCM2区域气候模式,进行了CO2加倍对中国区域气候影响的数值试验,对青藏高原及青藏铁路沿线地区进行了重点分析。结果表明,在CO2加倍的情况下,这里的气温将明显升高,升高值一般在2.6~2.8℃以上,高于全国平均值。同时降水在青藏高原大部分地区也将明显增加;其中青藏铁路沿线的增加率一般在25%以上,远高于全国平均值水平。温室效应同时会使得青藏铁路沿线的日平均最高气温升高。高学杰 李栋梁 赵宗慈 Filippo Giorgi 2003高原气象2003,22,5:36
17新疆21世纪气候变化的高分辨率模拟显示文摘使用一个25km高水平分辨率区域气候模式(RegCM3),嵌套MIROC3.2_hires全球气候模式结果,进行了IPCC SRES A1B情景下,东亚区域21世纪气候变化的模拟,针对新疆地区进行了分析.首先对模式模拟的当代(1981—2000年)气候进行检验,结果表明:模式对年平均气温、降水的空间分布和数值均具有较好的模拟能力,但与观测相比,模拟的气温一般在盆地偏高、山区偏低,降水则在盆地偏少、山区偏多.在IPCC SRES A1B温室气体排放情景下,21世纪中期(2041—2060年)及末期(2081—2100年)新疆地区冬、夏季气温均将升高,末期的增温幅度更大,特别是在末期的冬季.降水除个别地区外将普遍增加,同样末期增加更多.在不同地形条件下,气温和降水的变化特点均有所不同,其中盆地增温大、山区增温小,降水量在山区和盆地过渡地带的变化最明显,以增加为主并表现出一定的季节特征.相对于全国平均而言,新疆地区的增温和降水量增加更显著.吴佳 高学杰 石英 Filippo Giorgi 2011冰川冻土2011,33,3:34
18Consensus statement AIGO/SICCR diagnosis and treatment of chronic constipation and obstructed defecation(Part Ⅱ:Treatment)显示文摘The second part of the Consensus Statement of the Italian Association of Hospital Gastroenterologists and Italian Society of Colo-Rectal Surgery reports on the treatment of chronic constipation and obstructed defecation.There is no evidence that increasing fluid intake and physical activity can relieve the symptoms of chronic constipation.Patients with normal-transit constipation should increase their fibre intake through their diet or with commercial fibre.Osmotic laxatives may be effective in patients who do not respond to fibre supplements.Stimulant laxatives should be reserved for patients who do not respond to osmotic laxatives.Controlled trials have shown that serotoninergic enterokinetic agents,such as prucalopride,and prosecretory agents,such as lubiprostone,are effective in the treatment of patients with chronic constipation.Surgery is sometimes necessary.Total colectomy with ileorectostomy may be considered in patients with slow-transit constipation and inertia coli who are resistant to medical therapy and who do not have defecatory disorders,generalised motility disorders or psychological disorders.Randomised controlled trials have established the efficacy of rehabilitative treatment in dys-synergic defecation.Many surgical procedures may be used to treat obstructed defecation in patients with acquired anatomical defects,but none is considered to be the gold standard.Surgery should be reserved for selected patients with an impaired quality of life.Obstructed defecation is often associated with pelvic organ prolapse.Surgery with the placement of prostheses is replacing fascial surgery in the treatment of pelvic organ prolapse,but the efficacy and safety of such procedures have not yet been established.Antonio Bove Massimo Bellini Edda Battaglia Renato Bocchini Dario Gambaccini Vincenzo Bove Filippo Pucciani Donato Francesco Altomare Giuseppe Dodi Guido Sciaudone Ezio Falletto Vittorio Piloni 2012World Journal of Gastroenterology2012,18,36:33
19Performance of RegCM4 over Major River Basins in China显示文摘A long-term simulation for the period 1990–2010 is conducted with the latest version of the International Centre for Theoretical Physics' Regional Climate Model(RegCM4), driven by ERA-Interim boundary conditions at a grid spacing of 25 km. The Community Land Model(CLM) is used to describe land surface processes, with updates in the surface parameters,including the land cover and surface emissivity. The simulation is compared against observations to evaluate the model performance in reproducing the present day climatology and interannual variability over the 10 main river basins in China,with focus on surface air temperature and precipitation. Temperature and precipitation from the ERA-Interim reanalysis are also considered in the model assessment. Results show that the model reproduces the present day climatology over China and its main river basins, with better performances in June–July–August compared to December–January–February(DJF).In DJF, we find a warm bias at high latitudes, underestimated precipitation in the south, and overestimated precipitation in the north. The model in general captures the observed interannual variability, with greater skill for temperature. We also find an underestimation of heavy precipitation events in eastern China, and an underestimation of consecutive dry days in northern China and the Tibetan Plateau. Similar biases for both mean climatology and extremes are found in the ERA-Interim reanalysis, indicating the difficulties for climate models in simulating extreme monsoon climate events over East Asia.Xuejie GAO Ying SHI Zhenyu HAN Meili WANG Jia WU Dongfeng ZHANG Ying XU Filippo GIORGI 2017Advances in Atmospheric Sciences2017,34,4:33
20土地利用变化对我国区域气候影响的数值试验(英)显示文摘使用RegCM2区域气候模式单向嵌套澳大利亚CSIRO R21L9全球海-气耦合模式,通过将中国区域植被覆盖由理想状况改变为实际状况的数值试验对比分析,探讨了当代中国土地利用变化对中国区域气候的影响,并对结果进行了统计显著性检验。研究表明,土地利用的变化,会导致我国西北等地区年平均降水减少,导致年平均气温在内陆部分地区升高和在沿海个别地区降低,引起许多地方夏季日平均最高气温升高,而冬季日平均最低气温则在我国东部部分地区降低的同时在西北地区升高,土壤湿度的变化表现为大范围的降低。研究同时表明,相同的土地变化在不同的地理环境下引起的气候要素变化有一定的不一致性。高学杰 罗勇 林万涛 赵宗慈 Filippo GIORGI 2003Advances in Atmospheric Sciences2003,20,4:32
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