Greg McFarquhar                                                University of Illinois



Although models, theoretical studies and laboratory work play a major role in the atmospheric sciences, ultimately new theories and model simulations must be tested and evaluate through observations of the state of the atmosphere. The work of Prof. McFarquhar's group at the University of Illinois has concentrated on using observations and multi-scale models in combination so as to ultimately improve the representation of clouds in weather models. As our work concentrates on improving our knowledge of the basic properties of clouds and improving their representation in weather and climate models, we need to make measurements of clouds. We do this using aircraft that fly through clouds, measuring the microphysical properties of clouds in-situ. Because cloud properties vary considerably depending upon formation mechanism, height and geographic location, field experiments have been conducted in a wide variety of locations (illustrated above) so as to better understand the variability of cloud and associated properties. Click on the project name below to see some highlights of the project and the group members in action (topics, sponsors and aircrafts reflect the McFarquhar group effort and may represent a subset of the funding agencies and aircraft involved in the project).


                                     FIELD PROJECTS OF McFARQUHAR GROUP

Year Base
Instrument Development and Eduation in Airborne Science-4 (IDEAS-4) 2011 Boulder, CO NSF/DOE Impact of shattering of large ice crystals on probe tips on small ice crystal concentrations NCAR C-130
Profililng of Winter Storms (PLOWS) 2009/10 Peoria, IL NSF Microphysics of snowbands in mid-western cyclones NCAR C-130
Small Particles in Cirrus (SPARTICUS) 2009/10 Ponca City, OK DOE ARM Routine observations of microphysical and radiative properties of mid-latitude cirrus SPEC Learjet
RACORO 2009 Guthrie, OK DOE ARM Routine observations of liquid clouds with low optical depths CIRPAS Twin Otter
Indirect and Semi-Direct Aerosol Campaign (ISDAC) 2008 Fairbanks, AK DOE ARM Effect of aerosols on arctic mixed-phase clouds NRC Convair 580
Cloud and Land Surface Interaction Campaign (CLASIC) 2007 Houston, TX DOE ARM Cloud land surface interactions NASA ER-2
Gulf of Mexico Aerosol Cloud Composition Study (GoMACCS) 2006 Houston, TX NOAA Aerosol impacts on cumuli Multiple
NASA African Multidisciplinary Monsoon Analysis (NAMMA) 2006 Cape Verde Islands NASA Impact of Saharan dust on tropical cyclogenesis NASA DC-8
Tropical Warm Pool International Cloud Experiment (TWP-ICE) 2006 Darwin, Australia DOE ARM Tropical convection, cirrus and impacts on environment Scaled Composites Proteus
Tropical Cloud Systems and Processes (TCSP) 2005 San Jose, Costa Rica NASA Hurricane genesis and intensification NASA ER-2
Mixed-Phase Arctic Cloud Experiment (M-PACE) 2004 Prudhoe Bay, AK DOE ARM Mixed-phase arctic clouds UND Citation; Proteus
Alliance Icing Research Study II (AIRS II) 2003 Cleveland, OH NSF Investigation of icing conditions for aircraft NCAR C-130
Bow Echo and Mesoscale Convective Vortices Experiment (BAMEX) 2003 Pasquotah, IL NSF Investigation of bow echoes and microphysics of stratiform areas behind MCSs NOAA and NRL P-3
Convection and Moisture Experiment 4 (CAMEX 4) 2001 Jacksonville, FL NASA Investigation of land-falling hurricanes NASA DC-8 and ER-2
Indian Ocean Experiment (INDOEX) 1999 Male, Republic of Maldives NSF Impact of anthropogenic aerosols on trade wind cumuli NCAR C-130
Texas Florida Underpass Experiment A (TEFLUN-A) 1998 College Station, TX NASA Evaluation of TRMM satellite products NASA DC-8
SUCCESS 1996 Salina, KS NASA Cirrus and contrail experiment NASA DC-8 and ER-2
Central Equatorial Pacific Experiment (CEPEX) 1993 Nadi, Fiji NSF/NASA Cirrus microphysis and investigation of thermostat hypothesis Aeromet Learjet and NASA ER-2
Canadian Atlantic Storms Program 2 (CASP-2) 1992 St. John's, Newfoundland Canada Investigation of Canadian Winterstorms NRC Convair 580
Malaysian Rain Studies 1990 Penang, Malaysia Canada/ Malaysia Investigation of peaked distributions of raindrops King Air