1 | #!/usr/bin/env python |
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2 | # -*- coding: utf-8 -*- |
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3 | #******************************************************************************* |
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4 | # @Author: Anne Fouilloux (University of Oslo) |
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5 | # |
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6 | # @Date: October 2014 |
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7 | # |
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8 | # @Change History: |
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9 | # |
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10 | # November 2015 - Leopold Haimberger (University of Vienna): |
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11 | # - moved the getEIdata program into a function "get_mars_data" |
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12 | # - moved the AgurmentParser into a seperate function |
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13 | # - adatpted the function for the use in flex_extract |
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14 | # - renamed file to get_mars_data |
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15 | # |
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16 | # February 2018 - Anne Philipp (University of Vienna): |
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17 | # - applied PEP8 style guide |
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18 | # - added structured documentation |
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19 | # - minor changes in programming style for consistence |
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20 | # - added function main and moved function calls vom __main__ there |
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21 | # (necessary for better documentation with docstrings for later |
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22 | # online documentation) |
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23 | # - use of UIFiles class for file selection and deletion |
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24 | # |
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25 | # |
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26 | # @License: |
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27 | # (C) Copyright 2014-2018. |
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28 | # |
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29 | # This software is licensed under the terms of the Apache Licence Version 2.0 |
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30 | # which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. |
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31 | # |
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32 | # @Program Functionality: |
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33 | # This program can be used as a module in the whole flex_extract process |
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34 | # or can be run by itself to just extract MARS data from ECMWF. To do so, |
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35 | # a couple of necessary parameters has to be passed with the program call. |
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36 | # See documentation for more details. |
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37 | # |
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38 | # @Program Content: |
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39 | # - main |
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40 | # - get_mars_data |
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41 | # - do_retrievement |
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42 | # |
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43 | #******************************************************************************* |
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44 | |
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45 | # ------------------------------------------------------------------------------ |
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46 | # MODULES |
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47 | # ------------------------------------------------------------------------------ |
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48 | import os |
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49 | import sys |
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50 | import datetime |
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51 | import inspect |
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52 | try: |
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53 | ecapi = True |
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54 | import ecmwfapi |
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55 | except ImportError: |
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56 | ecapi = False |
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57 | |
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58 | # software specific classes and modules from flex_extract |
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59 | from tools import my_error, normal_exit, get_cmdline_arguments, read_ecenv |
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60 | from EcFlexpart import EcFlexpart |
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61 | from UioFiles import UioFiles |
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62 | |
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63 | # add path to pythonpath so that python finds its buddies |
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64 | LOCAL_PYTHON_PATH = os.path.dirname(os.path.abspath( |
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65 | inspect.getfile(inspect.currentframe()))) |
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66 | if LOCAL_PYTHON_PATH not in sys.path: |
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67 | sys.path.append(LOCAL_PYTHON_PATH) |
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68 | |
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69 | # ------------------------------------------------------------------------------ |
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70 | # FUNCTION |
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71 | # ------------------------------------------------------------------------------ |
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72 | def main(): |
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73 | ''' |
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74 | @Description: |
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75 | If get_mars_data is called from command line, this function controls |
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76 | the program flow and calls the argumentparser function and |
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77 | the get_mars_data function for retrieving EC data. |
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78 | |
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79 | @Input: |
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80 | <nothing> |
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81 | |
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82 | @Return: |
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83 | <nothing> |
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84 | ''' |
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85 | |
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86 | args = get_cmdline_arguments() |
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87 | |
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88 | try: |
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89 | c = ControlFile(args.controlfile) |
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90 | except IOError: |
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91 | try: |
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92 | c = ControlFile(LOCAL_PYTHON_PATH + args.controlfile) |
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93 | except IOError: |
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94 | print 'Could not read CONTROL file "' + args.controlfile + '"' |
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95 | print 'Either it does not exist or its syntax is wrong.' |
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96 | print 'Try "' + sys.argv[0].split('/')[-1] + \ |
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97 | ' -h" to print usage information' |
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98 | sys.exit(1) |
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99 | |
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100 | env_parameter = read_ecenv(c.ecmwfdatadir + 'python/ECMWF_ENV') |
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101 | c.assign_args_to_control(args, env_parameter) |
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102 | c.assign_envs_to_control(env_parameter) |
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103 | c.check_conditions() |
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104 | |
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105 | get_mars_data(c) |
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106 | normal_exit(c.mailfail, 'Done!') |
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107 | |
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108 | return |
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109 | |
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110 | def get_mars_data(c): |
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111 | ''' |
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112 | @Description: |
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113 | Retrieves the EC data needed for a FLEXPART simulation. |
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114 | Start and end dates for retrieval period is set. Retrievals |
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115 | are divided into smaller periods if necessary and datechunk parameter |
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116 | is set. |
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117 | |
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118 | @Input: |
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119 | c: instance of class ControlFile |
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120 | Contains all the parameters of CONTROL file, which are e.g.: |
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121 | DAY1(start_date), DAY2(end_date), DTIME, MAXSTEP, TYPE, TIME, |
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122 | STEP, CLASS(marsclass), STREAM, NUMBER, EXPVER, GRID, LEFT, |
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123 | LOWER, UPPER, RIGHT, LEVEL, LEVELIST, RESOL, GAUSS, ACCURACY, |
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124 | OMEGA, OMEGADIFF, ETA, ETADIFF, DPDETA, SMOOTH, FORMAT, |
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125 | ADDPAR, WRF, CWC, PREFIX, ECSTORAGE, ECTRANS, ECFSDIR, |
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126 | MAILOPS, MAILFAIL, GRIB2FLEXPART, FLEXPARTDIR, BASETIME |
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127 | DATE_CHUNK, DEBUG, INPUTDIR, OUTPUTDIR, FLEXPART_ROOT_SCRIPTS |
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128 | |
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129 | For more information about format and content of the parameter |
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130 | see documentation. |
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131 | |
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132 | @Return: |
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133 | <nothing> |
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134 | ''' |
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135 | |
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136 | if not os.path.exists(c.inputdir): |
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137 | os.makedirs(c.inputdir) |
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138 | |
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139 | print "Retrieving EC data!" |
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140 | print "start date %s " % (c.start_date) |
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141 | print "end date %s " % (c.end_date) |
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142 | |
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143 | if ecapi: |
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144 | server = ecmwfapi.ECMWFService("mars") |
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145 | else: |
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146 | server = False |
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147 | |
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148 | c.ecapi = ecapi |
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149 | print 'ecapi: ', c.ecapi |
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150 | |
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151 | # basetime geht rückwärts |
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152 | |
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153 | # if basetime 00 |
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154 | # dann wird von 12 am vortag bis 00 am start tag geholt |
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155 | # aber ohne 12 selbst sondern 12 + step |
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156 | |
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157 | # if basetime 12 |
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158 | # dann wird von 00 + step bis 12 am start tag geholt |
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159 | |
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160 | # purer forecast wird vorwärts bestimmt. |
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161 | # purer forecast mode ist dann wenn größer 24 stunden |
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162 | # wie kann das noch festgestellt werden ???? |
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163 | # nur FC und steps mehr als 24 ? |
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164 | # die einzige problematik beim reinen forecast ist die benennung der files! |
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165 | # also sobald es Tagesüberschneidungen gibt |
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166 | # allerdings ist das relevant und ersichtlich an den NICHT FLUSS DATEN |
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167 | |
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168 | |
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169 | # set start date of retrieval period |
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170 | start = datetime.date(year=int(c.start_date[:4]), |
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171 | month=int(c.start_date[4:6]), |
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172 | day=int(c.start_date[6:])) |
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173 | startm1 = start - datetime.timedelta(days=1) |
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174 | |
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175 | # set end date of retrieval period |
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176 | end = datetime.date(year=int(c.end_date[:4]), |
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177 | month=int(c.end_date[4:6]), |
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178 | day=int(c.end_date[6:])) |
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179 | |
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180 | # set time period for one single retrieval |
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181 | datechunk = datetime.timedelta(days=int(c.date_chunk)) |
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182 | |
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183 | if c.basetime == '00': |
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184 | start = startm1 |
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185 | |
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186 | if c.basetime == '00' or c.basetime == '12': |
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187 | # endp1 = end + datetime.timedelta(days=1) |
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188 | endp1 = end |
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189 | else: |
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190 | # endp1 = end + datetime.timedelta(days=2) |
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191 | endp1 = end + datetime.timedelta(days=1) |
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192 | |
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193 | # -------------- flux data ------------------------------------------------ |
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194 | print 'removing old flux content of ' + c.inputdir |
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195 | tobecleaned = UioFiles(c.inputdir, |
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196 | '*_acc_*.' + str(os.getppid()) + '.*.grb') |
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197 | tobecleaned.delete_files() |
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198 | |
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199 | # if forecast for maximum one day (upto 24h) are to be retrieved, |
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200 | # collect accumulation data (flux data) |
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201 | # with additional days in the beginning and at the end |
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202 | # (used for complete disaggregation of original period) |
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203 | if c.maxstep <= 24: |
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204 | do_retrievement(c, server, startm1, endp1, datechunk, fluxes=True) |
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205 | |
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206 | # if forecast data longer than 24h are to be retrieved, |
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207 | # collect accumulation data (flux data) |
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208 | # with the exact start and end date |
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209 | # (disaggregation will be done for the |
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210 | # exact time period with boundary conditions) |
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211 | else: |
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212 | do_retrievement(c, server, start, end, datechunk, fluxes=True) |
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213 | |
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214 | # -------------- non flux data -------------------------------------------- |
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215 | print 'removing old non flux content of ' + c.inputdir |
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216 | tobecleaned = UioFiles(c.inputdir, |
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217 | '*__*.' + str(os.getppid()) + '.*.grb') |
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218 | tobecleaned.delete_files() |
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219 | |
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220 | do_retrievement(c, server, start, end, datechunk, fluxes=False) |
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221 | |
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222 | return |
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223 | |
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224 | def do_retrievement(c, server, start, end, delta_t, fluxes=False): |
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225 | ''' |
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226 | @Description: |
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227 | Divides the complete retrieval period in smaller chunks and |
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228 | retrieves the data from MARS. |
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229 | |
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230 | @Input: |
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231 | c: instance of ControlFile |
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232 | Contains all the parameters of CONTROL file, which are e.g.: |
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233 | DAY1(start_date), DAY2(end_date), DTIME, MAXSTEP, TYPE, TIME, |
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234 | STEP, CLASS(marsclass), STREAM, NUMBER, EXPVER, GRID, LEFT, |
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235 | LOWER, UPPER, RIGHT, LEVEL, LEVELIST, RESOL, GAUSS, ACCURACY, |
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236 | OMEGA, OMEGADIFF, ETA, ETADIFF, DPDETA, SMOOTH, FORMAT, |
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237 | ADDPAR, WRF, CWC, PREFIX, ECSTORAGE, ECTRANS, ECFSDIR, |
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238 | MAILOPS, MAILFAIL, GRIB2FLEXPART, FLEXPARTDIR, BASETIME |
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239 | DATE_CHUNK, DEBUG, INPUTDIR, OUTPUTDIR, FLEXPART_ROOT_SCRIPTS |
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240 | |
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241 | For more information about format and content of the parameter |
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242 | see documentation. |
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243 | |
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244 | server: instance of ECMWFService |
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245 | The server connection to ECMWF |
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246 | |
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247 | start: instance of datetime |
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248 | The start date of the retrieval. |
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249 | |
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250 | end: instance of datetime |
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251 | The end date of the retrieval. |
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252 | |
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253 | delta_t: instance of datetime |
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254 | Delta_t +1 is the maximal time period of a single |
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255 | retrieval. |
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256 | |
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257 | fluxes: boolean, optional |
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258 | Decides if the flux parameters are to be retrieved or |
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259 | the rest of the parameter list. |
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260 | Default value is False. |
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261 | |
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262 | @Return: |
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263 | <nothing> |
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264 | ''' |
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265 | |
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266 | # since actual day also counts as one day, |
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267 | # we only need to add datechunk - 1 days to retrieval |
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268 | # for a period |
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269 | delta_t_m1 = delta_t - datetime.timedelta(days=1) |
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270 | |
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271 | day = start |
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272 | while day <= end: |
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273 | flexpart = EcFlexpart(c, fluxes) |
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274 | tmpday = day + delta_t_m1 |
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275 | if tmpday < end: |
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276 | dates = day.strftime("%Y%m%d") + "/to/" + \ |
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277 | tmpday.strftime("%Y%m%d") |
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278 | else: |
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279 | dates = day.strftime("%Y%m%d") + "/to/" + \ |
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280 | end.strftime("%Y%m%d") |
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281 | |
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282 | print "retrieve " + dates + " in dir " + c.inputdir |
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283 | |
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284 | try: |
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285 | flexpart.retrieve(server, dates, c.inputdir) |
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286 | except IOError: |
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287 | my_error(c.mailfail, 'MARS request failed') |
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288 | |
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289 | day += delta_t |
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290 | |
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291 | return |
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292 | |
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293 | if __name__ == "__main__": |
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294 | main() |
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