PPT-MERRA-2 Cloud Radiative

Forcing Validation Peter Norris MERRA2 Rollout NASAGSFC June 4 2015 Introduction Compare MERRA2 TOA cloud radiative forcing against CERES EBAF and MERRA All results use monthly means aggregated into 14 year averages for the period Mar 2000 . tropical cyclones. Robert Fovell and . Yizhe. Peggy Bu. University of California, Los Angeles. rfovell@ucla.edu. 1. Thanks to. : . Greg . Thompson, NCAR/. DTC; Ligia . Bernardet. and Mrinal . Biswas. SPECIFICS. OF STUDY. FINDINGS. Kohler,. 193. 6 (“The nucleus in and the growth of hygroscopic droplets”). Evaporate. 2kg of hoar-frost and . determined . Cl. content. ; used optics to . measure droplet size. Zack . Pecenak. Evan Greer. Changfu. Li. Climate Change - . Implications. Problem. Ongoing . climate . change. Solution:. Climate engineering?. Solar Radiation Management. Increasing the albedo of snow or clouds is a form of SRM. Sundar. . A. . Christopher. Department of . Atmospheric Science. The University of Alabama in . Huntsville. Measurement-Based Estimates of Direct Radiative Effects of Absorbing Aerosols above Low-level Clouds. Longwave. High. Clouds. Shortwave. High. Clouds. Shortwave. Low. Clouds. . . Δ. Optical Depth: -4 %. Δ Total Cloud Frac.: -0.50 %. . . Δ CTP: -8.30 hPa. . . Δ. Optical Depth: 2.0 % K. -1. of the MERRA-2 Assimilated Ozone Product. Gordon . Labow. Krzysztof . Wargan. Stacey . Frith. Steven Pawson. Gary . Partyka. September, 8, 2016. What is MERRA-2?. MODERN-ERA RETROSPECTIVE . ANALYSIS . imbalance . 1985-2012. Richard P. Allan. , . Chunlei. . Liu (University of Reading/NCAS Climate); Norman Loeb (NASA Langley); Matt Palmer (Met Office). r.p.allan@reading.ac.uk. @. rpallanuk. GEWEX 7. DYNAMO/CINDY. 2011. C.-H. . Sui, . Yi-An Chen, . Shu-Yu . Hou. National Taiwan University. NSA. SSA. (73.1E,0.7S). (. 72E,-7.3N. ). (73.5E,4.2N). (. 79E,6.9N. ). (. 80.5E,0.07N. ). (. 80.5E,-8N. ). Male. E. ffects. Lan Gao. 01/23/2017. ATMS 790. Trade cumulus clouds embedded in haze over Northern Indian Ocean, photo taken by Eric Wilcox. 1. Materials. T. wo articles:. . This review paper summaries the general and broad view of black carbon (BC) effects on the Earth climate.. of. aerosols over clouds . and. clear skies determined using CALIPSO . and. the A-Train. Robert Wood. , . Duli. . Chand. , Tad Anderson. University of Washington. VOCALS RF04, 21 November 2008. Effect of aerosol layer on TOA SW radiation. Contents Radiative Forcing of Climate Change Xiaoming Hu. 1. , Sergio A. Sejas. 2. , Ming Cai. 3. , . Zhenning. Li. 4. and Song Yang. 1. 1. School of Atmospheric Sciences, Sun . Yat-sen. University, Guangzhou, China. 2. NASA Langley Research Center, Climate Science Branch, Hampton, Virginia, USA. . Overview of Model: Convection. . The convection scheme of . Emanuel and . Živkovic. -Rothman. . (1999) . uses a buoyancy sorting algorithm . and . represents an entire spectrum of convective clouds, from shallow, non-precipitating cumulus to deep precipitating cumulonimbus. Precipitation re-evaporates and drives an unsaturated downdraft that imports enthalpy and moisture into the subcloud layer. Re-evaporation of cloud water, resulting from entrainment of dry air, drives penetrative downdrafts within the clouds. The cloud base mass flux is continuously relaxed so as to produce near neutrality of a parcel lifted dry adiabatically, and then moist adiabatically, to the first level above its lifted condensation level. This maintains a form of boundary layer . Kerry Emanuel. Massachusetts Institute of Technology. Several Possibly Inter-related Enigmas of the Tropical Atmosphere. Why does moist convection often cluster?. What determines the number of tropical cyclones on the planet?.