Feature/TUTT_Diag

diagnostics/TUTT/TUTT.html

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+<title>MDTF TUTT diagnostic</title>
+<!--HTML for top_heaviness_ratio_diag-->
+<img src="../mdtf_diag_banner.png">
+<h3>Tropical Upper-Troposheric Trough (TUTT) Diagnostics </h3>
+<p>
+Tropical upper-tropospheric troughs (TUTTs) are part of summertime stationary waves and 
+provide a unified framework that can be used to better understand variability of tropical
+cyclones (TCs) over different basins. Identifying deficiencies in representing TUTTs has 
+important implications for the improved regional TC simulation in climate models. A better 
+understanding of how TUTTs will change as climate warms also increases our confidence in 
+future TC projection. This diagnostic package is used to evaluate 200-hPa TUTT area in 
+both climate models and reanalysis datasets.
+</p>
+<TABLE>
+<TR>
+<TH ALIGN=LEFT>TUTT
+<TH ALIGN=CENTER><A HREF=model/{{CASENAME}}_TUTT_contour_model.png>plot</A>
+<TH ALIGN=CENTER><A HREF=obs/TUTT_contour_obs.png>plot</A>
+<TR>
+</TABLE>

diagnostics/TUTT/TUTT.py

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+# 28 June TUTT.py
+# Tropical Upper Tropospheric Trough Diagnostic Package
+#
+# ================================================================================
+# 
+# Last update: 28 June, 2021
+# PI: Zhuo Wang, [email protected], DAS UIUC)
+# Developer/point of contact (Zhuo Wang, Gan Zhang, Chuan-Chieh Chang, and Jiacheng Ye, DAS UIUC)
+# 
+# Tropical upper-tropospheric troughs (TUTTs) are part of summertime stationary waves and 
+# provide a unified framework that can be used to better understand variability of tropical
+# cyclones (TCs) over different basins.Identifying deficiencies in representing TUTTs 
+# has important implications for the improved regional TC simulation in climate models. A better 
+# understanding of how TUTTs will change as climate warms also increases our confidence in 
+# future TC projection. This diagnostic package is used to evaluate 200-hPa TUTT area in 
+# both climate models and reanalysis datasets.
+#
+# Version and contact info
+#
+#  - Version: 1.0
+#  - Contact info: 
+#  Zhuo Wang ([email protected])
+#
+# ================================================================================
+# Functionality
+#
+# 1) Calculates geostrophic zonal winds (Ug) using 200-hPa geopotential height with a fixed Coriolis parameter at 15N.
+# 2) Identifies positions of the circumglobal contour of the long-term seasonal-mean Ug. The value of Ug can be specified by the user, and usually ranges from 1 to 2 m/s. The zonal-mean latitude of the circumglobal contour is chosen as the reference latitude.
+# 3) The TUTT index is estimated from the area where the circumglobal contour of seasonal-mean Ug extends southward of the reference latitude.
+# 4) Calculates TUTT strength and central location.
+#
+#
+# ================================================================================
+#
+#    All scripts of this package can be found under: /diagnostics/TUTT/ 
+#    & observational data under: /obs_data/TUTT/
+#
+#    3-D (time-lat-lon) 200 hPa geopotential height fields are required;
+#
+# Required programming language: Tested in the Python 3.7 envrionment;
+# Required libraries: "netCDF4", "skimage", "numpy", "scipy", "shapely.geometry", "cartopy"
+#
+# ================================================================================
+# Reference: 
+# Wang, Z., Zhang, G., Dunkerton, T. J., & Jin, F. F. (2020). 
+#   Summertime stationary waves integrate tropical and extratropical impacts on tropical cyclone activity. 
+#   Proceedings of the National Academy of Sciences of the United States of America, 117(37), 22720-22726. https://doi.org/10.1073/pnas.2010547117
+#
+# Chuan-Chieh Chang and Zhuo's paper is in preparation...
+#Title: Chang, C.-C. and Z. Wang, 2021: Summertime Subtropical Stationary Waves: Variability and Impacts on the Tropical Cyclone Activity 
+
+
+# driver file
+import os
+import glob
+
+#obs_running=1 # =1 if the user wishes to run the example; =0 if the user wishes to disable it. 
+#model_running=1 # =1 if the user wishes to run the model data; =0 if the user wishes to disable it. 
+
+missing_file=0
+if len(glob.glob(os.environ["OMEGA_FILE"]))==0:
+    print("Required HGT200 data missing!")
+    missing_file=1
+
+if missing_file == 1:
+    print("TUTT Diag Package will NOT be executed!")
+else:
+    try:
+        os.system("python3 "+os.environ["POD_HOME"]+"/"+"TUTT_calc_obs.py")
+        print("The TUTT diag based on example data has been successfully conducted!")
+    except OSError as e:
+        print('WARNING',e.errno,e.strerror)
+        print("**************************************************")
+        print("TUTT_diag_obs.py based on example data is NOT Executed as Expected!")
+        print("**************************************************")
+    try:
+        os.system("python3 "+os.environ["POD_HOME"]+"/"+"TUTT_calc_model.py")
+        print("The TUTT diag based on model data has been successfully conducted!")
+    except OSError as e:
+        print('WARNING',e.errno,e.strerror)
+        print("**************************************************")
+        print("TUTT_diag_model.py based on model data is NOT Executed as Expected!")
+        print("**************************************************")
+
+    print("**************************************************")
+    print("Tropical Upper-Tropospheric Trough Diagnostics Executed!")
+    print("**************************************************")
+
+