Spring SCM IOP

1 March 2000 - 22 March 2000

Lead Scientist: David Randall

Observatory: sgp, sgp

Activity Summary

Executive Summary The Spring 2000 SCM IOP was conducted March 1-22, 2000, concurrent with the Cloud IOP 2000. The cloud radars and associated instrumentation fielded at three supplemental sites (SF1, SF2, and the Blackwell/Tonkawa airport) provided documentation of the spatial variability of cloud and atmospheric state variables that the SCM must treat in an average sense. Knowledge of this SCM subgrid-scale variability may prove valuable in assessing the limitations of current GCM parameterizations and lead to their improvement. Also, the data sets from the Cloud IOP will allow evaluation of the use of time-averaged statistics at a single point to represent spatial statistics of atmospheric variables at the SGP site.

The rate of successful soundings was excellent for this IOP. Out of the 840 soundings (168 per site), there were only 7 missing soundings (<1%), 10 that terminated below 3 km (~1%), and 8 the terminated between 3 and 10 km (1%). Soundings that are below expectation are tabulated by launch site and reveal some site-specific problems:

Problem Soundings
Launch Site
CF
BF1
BF4
BF5
BF6
Total
Missing
2
3
1
0
1
7
< 3 km
4
3
2
1
0
10
3-10 km
1
3
3
0
1
8

A high rate of successful soundings was achieved at B5 and B6, while there was a little more difficulty at B1 (and even the CF). There were no patterns in the missing or reduced sounding data that would create problems for subsequent SCM analyses.

Timeline

2017

Tang S, M Zhang, and S Xie. 2017. "Investigating the dependence of SCM simulated precipitation and clouds on the spatial scale of large-scale forcing at SGP." Journal of Geophysical Research: Atmospheres, 122(16), 10.1002/2017JD026565.
Research Highlight

2016

Tao W, Y Takayabu, S Lang, S Shige, W Olson, A Hou, G Skofronick-Jackson, X Jiang, C Zhang, W Lau, T Krishnamurti, D Waliser, M Grecu, P Ciesielski, R Johnson, R Houze, R Kakar, K Nakamura, S Braun, S Hagos, R Oki, and A Bhardwaj. 2016. "TRMM Latent Heating Retrieval: Applications and Comparisons with Field Campaigns and Large-Scale Analyses." Meteorological Monographs, 56, 10.1175/AMSMONOGRAPHS-D-15-0013.1.

2015

Tang S. 2015. An ensemble three-dimensional constrained variational analysis method to derive large-scale forcing data for single-column models. Ed. by Ph.D. Dissertation, Ann Arbor: ProQuest LLC.

2012

McCoy R, S Xie, Y Zhang, and C Zhao. 2012. ASR Cloud Modeling Data Development at Lawrence Livermore National Laboratory. Presented at 3rd Atmospheric System Research (ASR) Science Team Meeting. Arlington, VA.

2009

Zeng X, WK Tao, M Zhang, AY Hou, S Xie, S Lang, X Li, DO Starr, and X Li. 2009. "A contribution by ice nuclei to global warming." Quarterly Journal of the Royal Meteorological Society, 135(643), 10.1002/qj.449.
Research Highlight

Zeng X, W Tao, M Zhang, AY Hou, S Xie, S Lang, X Li, DO Starr, X Li, and J Simpson. 2009. "An Indirect Effect of Ice Nuclei on Atmospheric Radiation." Journal of the Atmospheric Sciences, 66(1), 10.1175/2008jas2778.1.
Research Highlight

2008

Wu X, S Park, and Q Min. 2008. "Seasonal Variation of Cloud Systems over ARM SGP." Journal of the Atmospheric Sciences, 65(7), 10.1175/2007jas2394.1.

2007

Zeng X, WK Tao, M Zhang, C Peters-Lidard, J Simpson, S Kumar, S Xie, JL Eastman, and C Shie. 2007. "Evaluating Clouds in Long-Term Cloud-Resolving Model Simulations with Observational Data." Journal of the Atmospheric Sciences, 64(12), 10.1175/2007jas2170.1.

Wu JB, MH Zhang, and WY Lin. 2007. "A case study of a frontal system simulated by a climate model: Clouds and radiation." Journal of Geophysical Research – Atmospheres, 112(D12), 10.1029/2006jd008238.

2005

Xu K, M Zhang, Z Eitzen, S Ghan, S Klein, X Wu, S Xie, M Branson, A Del Genio, S Iacobellis, M Khairoutdinov, W Lin, U Löhmann, DA Randall, RJ Somerville, Y Sud, G Walker, AB Wolf, J Yio, and J Zhang. 2005. "Modeling springtime shallow frontal clouds with cloud-resolving and single-column models." Journal of Geophysical Research – Atmospheres, 110(D15), D15S04, 10.1029/2004jd005153.


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Campaign Data Sets

IOP Participant Data Source Name Final Data
Richard Cederwall ncdc-synop-maps Order Data