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DEF STAN 00-35: PART 4

Revision I4, September 18, 2006

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Environmental Handbook for Defence Materiel Part 4: Natural Environments



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Product Details:

  • Revision: Revision I4, September 18, 2006
  • Published Date: September 18, 2006
  • Status: Active, Most Current
  • Document Language: English
  • Published By: MODUK - British Defense Standards (MODUK)
  • Page Count: 323
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

Part 4 (Natural Environments) of Def Stan 00-35 describes the meteorological and biological environments likely to be experienced by defence materiel in the earth's atmosphere, and the effects of each environment on such materiel. This Part implements STANAG 2895 Edition 1 (Reference 1). In the first two chapters, climatic categories and the diurnal cycles of temperature, humidity and solar radiation in each category are described. These cycles are used in several climatic test methods in Part 3.

To facilitate the identification of climatic conditions for inclusion in the Staff Target or Staff Requirement, eleven climatic categories have been chosen to represent distinctive types of climate found on the land surfaces of the world, and a further three have been selected to describe the conditions found at sea away from land. The definition of each climatic category is given in Table 1 together with the identification of some of the more important regions upon which the categorization is based.

The eight categories, A1 to A3 and C0 to C4, relating to the land surface are defined with temperature as the principal consideration, while the remaining three, B1 to B3, represent climates in which high humidity accompanied by a warm temperature is the outstanding characteristic. With respect to the sea surface, two categories M1 and M3 are defined with temperature as the principal consideration; whilst the third, M2, represents a sea climate in which a warm temperature is accompanied by high humidity.

The geographical locations to which these climatic categories apply are illustrated approximately in the maps at the end of this chapter. These are:

Figure 1A: Location of Warm Climatic Categories

Figure 1B: Location of Humid Climatic Categories

Figure 1C: Location of Cold Climatic Categories

It is considered impractible to attribute categories to specific sea areas, but as a general guide, M1 and M2 apply to regions which experience tropical and temperate conditions respectively, while M3 is representative of arctic conditions

The highest or lowest temperature ever reliably recorded in the location of various climatic categories is given in Table 2.

The delineation of the geographical areas in Figures 1A to 1C is not intended to imply that the climate at each and every location within that area complies exactly with the annual distributions and diurnal cycles appropriate to the indicated climatic category. The maps are provided only as a guide when determining the climatic environmental criteria. If data applicable to a specific region or location are required, then reference should be made to the appropriate sections in this part of the Defence Standard, or the Meteorological Office should be consulted. However, to avoid limitations in deployment, the geographical areas should be used as frequently as possible.

The diurnal cycles and annual distribution of temperature, solar radiation and humidity appropriate to each climatic category are summarised in Chapter 1-02 of this section and also discussed in Chapter 2- 01, Chapter 3-01 and Chapter 4-01 respectively of this part. The data cover both meteorological and storage conditions (see Chapter 1-02 for definitions).

Although temperature, solar radiation and humidity are the principal environments affecting each climatic category, additional factors may need to be considered. Table 3 lists these other climatic factors and the categories affected.